RFC2108
Network Working Group K. de Graaf Request for Comments: 2108 3Com Corporation Obsoletes: 1516 D. Romascanu Category: Standards Track Madge Networks (Israel) Ltd.
D. McMaster
Coloma Communications
K. McCloghrie
Cisco Systems Inc.
February 1997
Definitions of Managed Objects
for IEEE 802.3 Repeater Devices
using SMIv2
Status of this Memo
This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited.
Abstract
This memo defines a portion of the Management Information Base (MIB) for use with network management protocols in the Internet community. In particular, it defines objects for managing IEEE 802.3 10 and 100 Mb/second baseband repeaters based on IEEE Std 802.3 Section 30, "10 & 100 Mb/s Management," October 26, 1995.
Contents
The SNMP Network Management Framework
The SNMP Network Management Framework presently consists of three major components. They are:
o the SMI, described in RFC 1902 [6] - the mechanisms used
for describing and naming objects for the purpose of
management.
o the MIB-II, STD 17, RFC 1213 [5] - the core set of
managed objects for the Internet suite of protocols.
o the protocol, STD 15, RFC 1157 [10] and/or RFC 1905
[9] - the protocol used for accessing managed information.
Textual conventions are defined in RFC 1903 [7], and conformance statements are defined in RFC 1904 [8].
The Framework permits new objects to be defined for the purpose of experimentation and evaluation.
Object Definitions
Managed objects are accessed via a virtual information store, termed the Management Information Base or MIB. Objects in the MIB are defined using the subset of Abstract Syntax Notation one (ASN.1) defined in the SMI. In particular, each object type is named by an OBJECT IDENTIFIER, an administratively assigned name. The object type together with an object instance serves to uniquely identify a specific instantiation of the object. For human convenience, we often use a textual string, termed the descriptor, to refer to the object type.
Overview
Relationship to RFC 1516
This MIB is intended as a superset of that defined by RFC 1516 [11], which will go to historic status. This MIB includes all of the objects contained in that MIB, plus several new ones which provide
for significant additional capabilities. Implementors are encouraged to support all applicable conformance groups in order to make the best use of the new functionality provided by this MIB. The new objects provide support for:
o multiple repeaters
o 100BASE-T management
o port TopN capability
o address search and topology mapping
Certain objects have been deprecated; in particular, those scalar objects used for managing a single repeater are now of minimal use since they are duplicated in the new multiple- repeater definitions. Additional objects have been deprecated based on implementation experience with RFC 1516.
Repeater Management
Instances of the object types defined in this memo represent attributes of an IEEE 802.3 (Ethernet-like) repeater, as defined by Section 9, "Repeater Unit for 10 Mb/s Baseband Networks" in the IEEE 802.3/ISO 8802-3 CSMA/CD standard [1], and Section 27, "Repeater for 100 Mb/s Baseband Networks" in the IEEE Standard 802.3u-1995 [2].
These Repeater MIB objects may be used to manage non-standard repeater-like devices, but defining objects to describe implementation-specific properties of non-standard repeater- like devices is outside the scope of this memo.
The definitions presented here are based on Section 30.4, "Layer Management for 10 and 100 Mb/s Baseband Repeaters" and Annex 30A, "GDMO Specificataions for 802.3 managed objects" of [3].
Implementors of these MIB objects should note that [3] explicitly describes when, where, and how various repeater attributes are measured. The IEEE document also describes the effects of repeater actions that may be invoked by manipulating instances of the MIB objects defined here.
The counters in this document are defined to be the same as those counters in [3], with the intention that the same instrumentation can be used to implement both the IEEE and IETF management standards.
Structure of the MIB
Objects in this MIB are arranged into packages, each of which contains a set of related objects within a broad functional category. Objects within a package are generally defined under the same OID subtree. These packages are intended for organizational convenience ONLY, and have no relation to the conformance groups defined later in the document.
Basic Definitions
The basic definitions include objects which are applicable to all repeaters: status, parameter and control objects for each repeater within the managed system, for the port groups within the system, and for the individual ports themselves.
Monitor Definitions
The monitor definitions include monitoring statistics for each repeater within the system and for individual ports.
Address Tracking Definitions
This collection includes objects for tracking the MAC addresses of the DTEs attached to the ports within the system and for mapping the topology of a network.
Note: These definitions are based on a technology which has been patented by Hewlett-Packard Company. HP has granted rights to this technology to implementors of this MIB. See [12] and [13] for details.
Top N Definitions
These objects may be used for tracking the ports with the most activity within the system or within particular repeaters.
Relationship to Other MIBs
Relationship to MIB-II
It is assumed that a repeater implementing this MIB will also implement (at least) the 'system' group defined in MIB-II [5].
Relationship to the 'system' group
In MIB-II, the 'system' group is defined as being mandatory for all systems such that each managed entity contains one instance of each object in the 'system' group. Thus, those objects apply to the entity even if the entity's sole functionality is management of repeaters.
Relationship to the 'interfaces' group
In MIB-II, the 'interfaces' group is defined as being mandatory for all systems and contains information on an entity's interfaces, where each interface is thought of as being attached to a 'subnetwork'. (Note that this term is not to be confused with 'subnet' which refers to an addressing partitioning scheme used in the Internet suite of protocols.)
This Repeater MIB uses the notion of ports on a repeater. The concept of a MIB-II interface has NO specific relationship to a repeater's port. Therefore, the 'interfaces' group applies only to the one (or more) network interfaces on which the entity managing the repeater sends and receives management protocol operations, and does not apply to the repeater's ports.
This is consistent with the physical-layer nature of a repeater. A repeater is a bitwise store-and-forward device. It recognizes activity and bits, but does not process incoming data based on any packet-related information (such as checksum or addresses). A repeater has no MAC address, no MAC implementation, and does not pass packets up to higher-level protocol entities for processing.
(When a network management entity is observing a repeater, it may appear as though the repeater is passing packets to a higher-level protocol entity. However, this is only a means of implementing management, and this passing of management information is not part of the repeater functionality.)
Definitions
SNMP-REPEATER-MIB DEFINITIONS ::= BEGIN
IMPORTS
Counter32, Counter64, Integer32, Gauge32, TimeTicks,
OBJECT-TYPE, MODULE-IDENTITY, NOTIFICATION-TYPE, mib-2
FROM SNMPv2-SMI
TimeStamp, DisplayString, MacAddress, TEXTUAL-CONVENTION,
RowStatus, TestAndIncr
FROM SNMPv2-TC
OBJECT-GROUP, MODULE-COMPLIANCE
FROM SNMPv2-CONF
OwnerString
FROM IF-MIB;
snmpRptrMod MODULE-IDENTITY
LAST-UPDATED "9609140000Z"
ORGANIZATION "IETF HUB MIB Working Group"
CONTACT-INFO
"WG E-mail: [email protected]
Chair: Dan Romascanu
Postal: Madge Networks (Israel) Ltd.
Atidim Technology Park, Bldg. 3
Tel Aviv 61131, Israel
Tel: 972-3-6458414, 6458458
Fax: 972-3-6487146
E-mail: [email protected]
Editor: Kathryn de Graaf
Postal: 3Com Corporation
118 Turnpike Rd.
Southborough, MA 01772 USA
Tel: (508)229-1627
Fax: (508)490-5882
E-mail: [email protected]"
DESCRIPTION
"Management information for 802.3 repeaters.
The following references are used throughout
this MIB module:
[IEEE 802.3 Std]
refers to IEEE 802.3/ISO 8802-3 Information
processing systems - Local area networks -
Part 3: Carrier sense multiple access with
collision detection (CSMA/CD) access method
and physical layer specifications (1993).
[IEEE 802.3 Mgt]
refers to IEEE 802.3u-1995, '10 Mb/s &
100 Mb/s Management, Section 30,'
Supplement to ANSI/IEEE 802.3.
The following terms are used throughout this
MIB module. For complete formal definitions,
the IEEE 802.3 standards should be consulted
wherever possible:
System - A managed entity compliant with this
MIB, and incorporating at least one managed
802.3 repeater.
Chassis - An enclosure for one managed repeater,
part of a managed repeater, or several managed
repeaters. It typically contains an integral
power supply and a variable number of available
module slots.
Repeater-unit - The portion of the repeater set
that is inboard of the physical media interfaces.
The physical media interfaces (MAUs, AUIs) may be
physically separated from the repeater-unit, or
they may be integrated into the same physical
package.
Trivial repeater-unit - An isolated port that can
gather statistics.
Group - A recommended, but optional, entity
defined by the IEEE 802.3 management standard,
in order to support a modular numbering scheme.
The classical example allows an implementor to
represent field-replaceable units as groups of
ports, with the port numbering matching the
modular hardware implementation.
System interconnect segment - An internal
segment allowing interconnection of ports
belonging to different physical entities
into the same logical manageable repeater.
Examples of implementation might be
backplane busses in modular hubs, or
chaining cables in stacks of hubs.
Stack - A scalable system that may include
managed repeaters, in which modularity is
achieved by interconnecting a number of
different chassis.
Module - A building block in a modular
chassis. It typically maps into one 'slot';
however, the range of configurations may be
very large, with several modules entering
one slot, or one module covering several
slots.
"
REVISION "9309010000Z"
DESCRIPTION
"Published as RFC 1516"
REVISION "9210010000Z"
DESCRIPTION
"Published as RFC 1368"
::= { snmpDot3RptrMgt 5 }
snmpDot3RptrMgt OBJECT IDENTIFIER ::= { mib-2 22 }
OptMacAddr ::= TEXTUAL-CONVENTION
DISPLAY-HINT "1x:"
STATUS current
DESCRIPTION
"Either a 6 octet address in the `canonical'
order defined by IEEE 802.1a, i.e., as if it
were transmitted least significant bit first
if a value is available or a zero length string."
REFERENCE
"See MacAddress in SNMPv2-TC. The only difference
is that a zero length string is allowed as a value
for OptMacAddr and not for MacAddress."
SYNTAX OCTET STRING (SIZE (0 | 6))
-- Basic information at the repeater, group, and port level.
rptrBasicPackage
OBJECT IDENTIFIER ::= { snmpDot3RptrMgt 1 }
rptrRptrInfo
OBJECT IDENTIFIER ::= { rptrBasicPackage 1 }
rptrGroupInfo
OBJECT IDENTIFIER ::= { rptrBasicPackage 2 }
rptrPortInfo
OBJECT IDENTIFIER ::= { rptrBasicPackage 3 }
rptrAllRptrInfo
OBJECT IDENTIFIER ::= { rptrBasicPackage 4 }
-- Monitoring information at the repeater, group, and port level. rptrMonitorPackage
OBJECT IDENTIFIER ::= { snmpDot3RptrMgt 2 }
rptrMonitorRptrInfo
OBJECT IDENTIFIER ::= { rptrMonitorPackage 1 }
rptrMonitorGroupInfo
OBJECT IDENTIFIER ::= { rptrMonitorPackage 2 }
rptrMonitorPortInfo
OBJECT IDENTIFIER ::= { rptrMonitorPackage 3 }
rptrMonitorAllRptrInfo
OBJECT IDENTIFIER ::= { rptrMonitorPackage 4 }
-- Address tracking information at the repeater, group, -- and port level. rptrAddrTrackPackage
OBJECT IDENTIFIER ::= { snmpDot3RptrMgt 3 }
rptrAddrTrackRptrInfo
OBJECT IDENTIFIER ::= { rptrAddrTrackPackage 1 }
rptrAddrTrackGroupInfo
-- this subtree is currently unused
OBJECT IDENTIFIER ::= { rptrAddrTrackPackage 2 }
rptrAddrTrackPortInfo
OBJECT IDENTIFIER ::= { rptrAddrTrackPackage 3 }
-- TopN information. rptrTopNPackage
OBJECT IDENTIFIER ::= { snmpDot3RptrMgt 4 }
rptrTopNRptrInfo
-- this subtree is currently unused
OBJECT IDENTIFIER ::= { rptrTopNPackage 1 }
rptrTopNGroupInfo
-- this subtree is currently unused
OBJECT IDENTIFIER ::= { rptrTopNPackage 2 }
rptrTopNPortInfo
OBJECT IDENTIFIER ::= { rptrTopNPackage 3 }
-- Old version of basic information at the repeater level. -- -- In a system containing a single managed repeater, -- configuration, status, and control objects for the overall -- repeater.
-- -- The objects contained under the rptrRptrInfo subtree are -- intended for backwards compatibility with implementations of -- RFC 1516 [11]. In newer implementations (both single- and -- multiple-repeater implementations) the rptrInfoTable should -- be implemented. It is the preferred source of this information, -- as it contains the values for all repeaters managed by the -- agent. In all cases, the objects in the rptrRptrInfo subtree -- are duplicates of the corresponding objects in the first entry -- of the rptrInfoTable.
rptrGroupCapacity OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS read-only
STATUS deprecated
DESCRIPTION
"********* THIS OBJECT IS DEPRECATED **********
The rptrGroupCapacity is the number of groups
that can be contained within the repeater. Within
each managed repeater, the groups are uniquely
numbered in the range from 1 to rptrGroupCapacity.
Some groups may not be present in the repeater, in
which case the actual number of groups present
will be less than rptrGroupCapacity. The number
of groups present will never be greater than
rptrGroupCapacity.
Note: In practice, this will generally be the
number of field-replaceable units (i.e., modules,
cards, or boards) that can fit in the physical
repeater enclosure, and the group numbers will
correspond to numbers marked on the physical
enclosure."
REFERENCE
"[IEEE 802.3 Mgt], 30.4.1.1.3,
aRepeaterGroupCapacity."
::= { rptrRptrInfo 1 }
rptrOperStatus OBJECT-TYPE
SYNTAX INTEGER {
other(1), -- undefined or unknown
ok(2), -- no known failures
rptrFailure(3), -- repeater-related failure
groupFailure(4), -- group-related failure
portFailure(5), -- port-related failure
generalFailure(6) -- failure, unspecified type
}
MAX-ACCESS read-only
STATUS deprecated
DESCRIPTION
"********* THIS OBJECT IS DEPRECATED **********
The rptrOperStatus object indicates the
operational state of the repeater. The
rptrHealthText object may be consulted for more
specific information about the state of the
repeater's health.
In the case of multiple kinds of failures (e.g.,
repeater failure and port failure), the value of
this attribute shall reflect the highest priority
failure in the following order, listed highest
priority first:
rptrFailure(3)
groupFailure(4)
portFailure(5)
generalFailure(6)."
REFERENCE
"[IEEE 802.3 Mgt], 30.4.1.1.5, aRepeaterHealthState."
::= { rptrRptrInfo 2 }
rptrHealthText OBJECT-TYPE
SYNTAX DisplayString (SIZE (0..255))
MAX-ACCESS read-only
STATUS deprecated
DESCRIPTION
"********* THIS OBJECT IS DEPRECATED **********
The health text object is a text string that
provides information relevant to the operational
state of the repeater. Agents may use this string
to provide detailed information on current
failures, including how they were detected, and/or
instructions for problem resolution. The contents
are agent-specific."
REFERENCE
"[IEEE 802.3 Mgt], 30.4.1.1.6, aRepeaterHealthText."
::= { rptrRptrInfo 3 }
rptrReset OBJECT-TYPE
SYNTAX INTEGER {
noReset(1),
reset(2)
}
MAX-ACCESS read-write
STATUS deprecated
DESCRIPTION
"********* THIS OBJECT IS DEPRECATED **********
Setting this object to reset(2) causes a
transition to the START state of Fig 9-2 in
section 9 [IEEE 802.3 Std] for a 10Mb/s repeater,
and the START state of Fig 27-2 in section 27
of that standard for a 100Mb/s repeater.
Setting this object to noReset(1) has no effect.
The agent will always return the value noReset(1)
when this object is read.
After receiving a request to set this variable to
reset(2), the agent is allowed to delay the reset
for a short period. For example, the implementor
may choose to delay the reset long enough to allow
the SNMP response to be transmitted. In any
event, the SNMP response must be transmitted.
This action does not reset the management counters
defined in this document nor does it affect the
portAdminStatus parameters. Included in this
action is the execution of a disruptive Self-Test
with the following characteristics: a) The nature
of the tests is not specified. b) The test resets
the repeater but without affecting management
information about the repeater. c) The test does
not inject packets onto any segment. d) Packets
received during the test may or may not be
transferred. e) The test does not interfere with
management functions.
After performing this self-test, the agent will
update the repeater health information (including
rptrOperStatus and rptrHealthText), and send a
rptrHealth trap."
REFERENCE
"[IEEE 802.3 Mgt], 30.4.1.2.1, acResetRepeater."
::= { rptrRptrInfo 4 }
rptrNonDisruptTest OBJECT-TYPE
SYNTAX INTEGER {
noSelfTest(1),
selfTest(2)
}
MAX-ACCESS read-write
STATUS deprecated
DESCRIPTION
"********* THIS OBJECT IS DEPRECATED **********
Setting this object to selfTest(2) causes the
repeater to perform a agent-specific, non-
disruptive self-test that has the following
characteristics: a) The nature of the tests is
not specified. b) The test does not change the
state of the repeater or management information
about the repeater. c) The test does not inject
packets onto any segment. d) The test does not
prevent the relay of any packets. e) The test
does not interfere with management functions.
After performing this test, the agent will update
the repeater health information (including
rptrOperStatus and rptrHealthText) and send a
rptrHealth trap.
Note that this definition allows returning an
'okay' result after doing a trivial test.
Setting this object to noSelfTest(1) has no
effect. The agent will always return the value
noSelfTest(1) when this object is read."
REFERENCE
"[IEEE 802.3 Mgt], 30.4.1.2.2,
acExecuteNonDisruptiveSelfTest."
::= { rptrRptrInfo 5 }
rptrTotalPartitionedPorts OBJECT-TYPE
SYNTAX Gauge32
MAX-ACCESS read-only
STATUS deprecated
DESCRIPTION
"********* THIS OBJECT IS DEPRECATED **********
This object returns the total number of ports in
the repeater whose current state meets all three
of the following criteria: rptrPortOperStatus
does not have the value notPresent(3),
rptrPortAdminStatus is enabled(1), and
rptrPortAutoPartitionState is autoPartitioned(2)."
::= { rptrRptrInfo 6 }
-- Basic information at the group level. -- -- Configuration and status objects for each -- managed group in the system, independent -- of whether there is one or more managed -- repeater-units in the system.
rptrGroupTable OBJECT-TYPE
SYNTAX SEQUENCE OF RptrGroupEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Table of descriptive and status information about
the groups of ports."
::= { rptrGroupInfo 1 }
rptrGroupEntry OBJECT-TYPE
SYNTAX RptrGroupEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry in the table, containing information
about a single group of ports."
INDEX { rptrGroupIndex }
::= { rptrGroupTable 1 }
RptrGroupEntry ::=
SEQUENCE {
rptrGroupIndex
Integer32,
rptrGroupDescr
DisplayString,
rptrGroupObjectID
OBJECT IDENTIFIER,
rptrGroupOperStatus
INTEGER,
rptrGroupLastOperStatusChange
TimeTicks,
rptrGroupPortCapacity
Integer32
}
rptrGroupIndex OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object identifies the group within the
system for which this entry contains
information."
REFERENCE
"[IEEE 802.3 Mgt], 30.4.2.1.1, aGroupID."
::= { rptrGroupEntry 1 }
rptrGroupDescr OBJECT-TYPE
SYNTAX DisplayString (SIZE (0..255))
MAX-ACCESS read-only
STATUS deprecated
DESCRIPTION
"********* THIS OBJECT IS DEPRECATED **********
A textual description of the group. This value
should include the full name and version
identification of the group's hardware type and
indicate how the group is differentiated from
other types of groups in the repeater. Plug-in
Module, Rev A' or 'Barney Rubble 10BASE-T 4-port
SIMM socket Version 2.1' are examples of valid
group descriptions.
It is mandatory that this only contain printable
ASCII characters."
::= { rptrGroupEntry 2 }
rptrGroupObjectID OBJECT-TYPE
SYNTAX OBJECT IDENTIFIER
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The vendor's authoritative identification of the
group. This value may be allocated within the SMI
enterprises subtree (1.3.6.1.4.1) and provides a
straight-forward and unambiguous means for
determining what kind of group is being managed.
For example, this object could take the value
1.3.6.1.4.1.4242.1.2.14 if vendor 'Flintstones,
Inc.' was assigned the subtree 1.3.6.1.4.1.4242,
and had assigned the identifier
1.3.6.1.4.1.4242.1.2.14 to its 'Wilma Flintstone
6-Port FOIRL Plug-in Module.'"
::= { rptrGroupEntry 3 }
rptrGroupOperStatus OBJECT-TYPE
SYNTAX INTEGER {
other(1),
operational(2),
malfunctioning(3),
notPresent(4),
underTest(5),
resetInProgress(6)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"An object that indicates the operational status
of the group.
A status of notPresent(4) indicates that the group
is temporarily or permanently physically and/or
logically not a part of the repeater. It is an
implementation-specific matter as to whether the
agent effectively removes notPresent entries from
the table.
A status of operational(2) indicates that the
group is functioning, and a status of
malfunctioning(3) indicates that the group is
malfunctioning in some way."
::= { rptrGroupEntry 4 }
rptrGroupLastOperStatusChange OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-only
STATUS deprecated
DESCRIPTION
"********* THIS OBJECT IS DEPRECATED **********
An object that contains the value of sysUpTime at
the time when the last of the following occurred:
1) the agent cold- or warm-started;
2) the row for the group was created (such
as when the group was added to the system); or
3) the value of rptrGroupOperStatus for the
group changed.
A value of zero indicates that the group's
operational status has not changed since the agent
last restarted."
::= { rptrGroupEntry 5 }
rptrGroupPortCapacity OBJECT-TYPE
SYNTAX Integer32 (1..2147483647) MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The rptrGroupPortCapacity is the number of ports
that can be contained within the group. Valid
range is 1-2147483647. Within each group, the
ports are uniquely numbered in the range from 1 to
rptrGroupPortCapacity.
Some ports may not be present in the system, in
which case the actual number of ports present
will be less than the value of rptrGroupPortCapacity.
The number of ports present in the group will never
be greater than the value of rptrGroupPortCapacity.
Note: In practice, this will generally be the
number of ports on a module, card, or board, and
the port numbers will correspond to numbers marked
on the physical embodiment."
REFERENCE
"IEEE 802.3 Mgt, 30.4.2.1.2, aGroupPortCapacity."
::= { rptrGroupEntry 6 }
-- Basic information at the port level. -- -- Configuration and status objects for -- each managed repeater port in the system, -- independent of whether there is one or more -- managed repeater-units in the system.
rptrPortTable OBJECT-TYPE
SYNTAX SEQUENCE OF RptrPortEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Table of descriptive and status information about
the repeater ports in the system. The number of
entries is independent of the number of repeaters
in the managed system."
::= { rptrPortInfo 1 }
rptrPortEntry OBJECT-TYPE
SYNTAX RptrPortEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry in the table, containing information
about a single port."
INDEX { rptrPortGroupIndex, rptrPortIndex }
::= { rptrPortTable 1 }
RptrPortEntry ::=
SEQUENCE {
rptrPortGroupIndex
Integer32,
rptrPortIndex
Integer32,
rptrPortAdminStatus
INTEGER,
rptrPortAutoPartitionState
INTEGER,
rptrPortOperStatus
INTEGER,
rptrPortRptrId
Integer32
}
rptrPortGroupIndex OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object identifies the group containing the
port for which this entry contains information."
::= { rptrPortEntry 1 }
rptrPortIndex OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object identifies the port within the group
for which this entry contains information. This
identifies the port independently from the repeater
it may be attached to. The numbering scheme for
ports is implementation specific; however, this
value can never be greater than
rptrGroupPortCapacity for the associated group."
REFERENCE
"[IEEE 802.3 Mgt], 30.4.3.1.1, aPortID."
::= { rptrPortEntry 2 }
rptrPortAdminStatus OBJECT-TYPE
SYNTAX INTEGER {
enabled(1),
disabled(2)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"Setting this object to disabled(2) disables the
port. A disabled port neither transmits nor
receives. Once disabled, a port must be
explicitly enabled to restore operation. A port
which is disabled when power is lost or when a
reset is exerted shall remain disabled when normal
operation resumes.
The admin status takes precedence over auto-
partition and functionally operates between the
auto-partition mechanism and the AUI/PMA.
Setting this object to enabled(1) enables the port
and exerts a BEGIN on the port's auto-partition
state machine.
(In effect, when a port is disabled, the value of
rptrPortAutoPartitionState for that port is frozen
until the port is next enabled. When the port
becomes enabled, the rptrPortAutoPartitionState
becomes notAutoPartitioned(1), regardless of its
pre-disabling state.)"
REFERENCE
"[IEEE 802.3 Mgt], 30.4.3.1.2, aPortAdminState
and 30.4.3.2.1, acPortAdminControl."
::= { rptrPortEntry 3 }
rptrPortAutoPartitionState OBJECT-TYPE
SYNTAX INTEGER {
notAutoPartitioned(1),
autoPartitioned(2)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The autoPartitionState flag indicates whether the
port is currently partitioned by the repeater's
auto-partition protection.
The conditions that cause port partitioning are
specified in partition state machine in Sections
9 and 27 of [IEEE 802.3 Std]. They are not
differentiated here."
REFERENCE
"[IEEE 802.3 Mgt], 30.4.3.1.3, aAutoPartitionState."
::= { rptrPortEntry 4 }
rptrPortOperStatus OBJECT-TYPE
SYNTAX INTEGER {
operational(1),
notOperational(2),
notPresent(3)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object indicates the port's operational
status. The notPresent(3) status indicates the
port is physically removed (note this may or may
not be possible depending on the type of port.)
The operational(1) status indicates that the port
is enabled (see rptrPortAdminStatus) and working,
even though it might be auto-partitioned (see
rptrPortAutoPartitionState).
If this object has the value operational(1) and
rptrPortAdminStatus is set to disabled(2), it is
expected that this object's value will soon change
to notOperational(2)."
::= { rptrPortEntry 5 }
rptrPortRptrId OBJECT-TYPE
SYNTAX Integer32 (0..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object identifies the repeater to
which this port belongs. The repeater
identified by a particular value of this object
is the same as that identified by the same
value of rptrInfoId. A value of zero
indicates that this port currently is not
a member of any repeater."
::= { rptrPortEntry 6 }
-- New version of basic information at the repeater level. -- -- Configuration, status, and control objects for -- each managed repeater in the system.
rptrInfoTable OBJECT-TYPE
SYNTAX SEQUENCE OF RptrInfoEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table of information about each
non-trivial repeater. The number of entries
depends on the physical configuration of the
managed system."
::= { rptrAllRptrInfo 1 }
rptrInfoEntry OBJECT-TYPE
SYNTAX RptrInfoEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry in the table, containing information
about a single non-trivial repeater."
INDEX { rptrInfoId }
::= { rptrInfoTable 1 }
RptrInfoEntry ::=
SEQUENCE {
rptrInfoId
Integer32,
rptrInfoRptrType
INTEGER,
rptrInfoOperStatus
INTEGER,
rptrInfoReset
INTEGER,
rptrInfoPartitionedPorts
Gauge32,
rptrInfoLastChange
TimeStamp
}
rptrInfoId OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object identifies the repeater for which
this entry contains information."
::= { rptrInfoEntry 1 }
rptrInfoRptrType OBJECT-TYPE
SYNTAX INTEGER {
other(1), -- undefined or unknown
tenMb(2),
onehundredMbClassI(3),
onehundredMbClassII(4)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The rptrInfoRptrType returns a value that identifies
the CSMA/CD repeater type."
REFERENCE
"[IEEE 802.3 Mgt], 30.4.1.1.2, aRepeaterType."
::= { rptrInfoEntry 2 }
rptrInfoOperStatus OBJECT-TYPE
SYNTAX INTEGER {
other(1),
ok(2),
failure(3)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The rptrInfoOperStatus object indicates the
operational state of the repeater."
REFERENCE
"[IEEE 802.3 Mgt], 30.4.1.1.5, aRepeaterHealthState."
::= { rptrInfoEntry 3 }
rptrInfoReset OBJECT-TYPE
SYNTAX INTEGER {
noReset(1),
reset(2)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"Setting this object to reset(2) causes a
transition to the START state of Fig 9-2 in
section 9 [IEEE 802.3 Std] for a 10Mb/s repeater,
and to the START state of Fig 27-2 in section 27
of that standard for a 100Mb/s repeater.
Setting this object to noReset(1) has no effect.
The agent will always return the value noReset(1)
when this object is read.
After receiving a request to set this variable to
reset(2), the agent is allowed to delay the reset
for a short period. For example, the implementor
may choose to delay the reset long enough to allow
the SNMP response to be transmitted. In any
event, the SNMP response must be transmitted.
This action does not reset the management counters
defined in this document nor does it affect the
portAdminStatus parameters. Included in this
action is the execution of a disruptive Self-Test
with the following characteristics: a) The nature
of the tests is not specified. b) The test resets
the repeater but without affecting management
information about the repeater. c) The test does
not inject packets onto any segment. d) Packets
received during the test may or may not be
transferred. e) The test does not interfere with
management functions.
After performing this self-test, the agent will
update the repeater health information (including
rptrInfoOperStatus), and send a rptrInfoResetEvent
notification."
REFERENCE
"[IEEE 802.3 Mgt], 30.4.1.2.1, acResetRepeater."
::= { rptrInfoEntry 4 }
rptrInfoPartitionedPorts OBJECT-TYPE
SYNTAX Gauge32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object returns the total number of ports in
the repeater whose current state meets all three
of the following criteria: rptrPortOperStatus
does not have the value notPresent(3),
rptrPortAdminStatus is enabled(1), and
rptrPortAutoPartitionState is autoPartitioned(2)."
::= { rptrInfoEntry 5 }
rptrInfoLastChange OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of sysUpTime when any of the following
conditions occurred:
1) agent cold- or warm-started;
2) this instance of repeater was created
(such as when a device or module was
added to the system);
3) a change in the value of rptrInfoOperStatus;
4) ports were added or removed as members of
the repeater; or
5) any of the counters associated with this
repeater had a discontinuity."
::= { rptrInfoEntry 6 }
-- -- Old version of statistics at the repeater level. -- -- Performance monitoring statistics for the repeater -- -- In a system containing a single managed repeater-unit, -- the statistics object for the repeater-unit.
-- The objects contained under the rptrMonitorRptrInfo subtree are -- intended for backwards compatibility with implementations of -- RFC 1516 [11]. In newer implementations (both single- and -- multiple-repeater implementations), the rptrMonitorTable will -- be implemented. It is the preferred source of this information, -- as it contains the values for all repeaters managed by the -- agent. In all cases, the objects in the rptrMonitorRptrInfo -- subtree are duplicates of the corresponding objects in the -- first entry of the rptrMonitorTable.
rptrMonitorTransmitCollisions OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS deprecated
DESCRIPTION
"********* THIS OBJECT IS DEPRECATED **********
For a clause 9 (10Mb/s) repeater, this counter
is incremented every time the repeater state
machine enters the TRANSMIT COLLISION state
from any state other than ONE PORT LEFT
(Ref: Fig 9-2 [IEEE 802.3 Std]).
For a clause 27 repeater, this counter is
incremented every time the repeater core state
diagram enters the Jam state as a result of
Activity(ALL) > 1 (fig 27-2 [IEEE 802.3 Std]).
The approximate minimum time for rollover of this
counter is 16 hours in a 10Mb/s repeater and 1.6
hours in a 100Mb/s repeater."
REFERENCE
"[IEEE 802.3 Mgt], 30.4.1.1.8, aTransmitCollisions."
::= { rptrMonitorRptrInfo 1 }
-- Statistics at the group level. -- -- In a system containing a single managed repeater-unit, -- the statistics objects for each group.
rptrMonitorGroupTable OBJECT-TYPE
SYNTAX SEQUENCE OF RptrMonitorGroupEntry
MAX-ACCESS not-accessible
STATUS deprecated
DESCRIPTION
"********* THIS OBJECT IS DEPRECATED **********
Table of performance and error statistics for the
groups within the repeater. The number of entries
is the same as that in the rptrGroupTable."
::= { rptrMonitorGroupInfo 1 }
rptrMonitorGroupEntry OBJECT-TYPE
SYNTAX RptrMonitorGroupEntry
MAX-ACCESS not-accessible
STATUS deprecated
DESCRIPTION
"********* THIS OBJECT IS DEPRECATED **********
An entry in the table, containing total
performance and error statistics for a single
group. Regular retrieval of the information in
this table provides a means of tracking the
performance and health of the networked devices
attached to this group's ports.
The counters in this table are redundant in the
sense that they are the summations of information
already available through other objects. However,
these sums provide a considerable optimization of
network management traffic over the otherwise
necessary retrieval of the individual counters
included in each sum.
Note: Group-level counters are
deprecated in this MIB. It is recommended
that management applications instead use
the repeater-level counters contained in
the rptrMonTable."
INDEX { rptrMonitorGroupIndex }
::= { rptrMonitorGroupTable 1 }
RptrMonitorGroupEntry ::=
SEQUENCE {
rptrMonitorGroupIndex
Integer32,
rptrMonitorGroupTotalFrames
Counter32,
rptrMonitorGroupTotalOctets
Counter32,
rptrMonitorGroupTotalErrors
Counter32
}
rptrMonitorGroupIndex OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS read-only
STATUS deprecated
DESCRIPTION
"********* THIS OBJECT IS DEPRECATED **********
This object identifies the group within the
repeater for which this entry contains
information."
::= { rptrMonitorGroupEntry 1 }
rptrMonitorGroupTotalFrames OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS deprecated
DESCRIPTION
"********* THIS OBJECT IS DEPRECATED **********
The total number of frames of valid frame length
that have been received on the ports in this group
and for which the FCSError and CollisionEvent
signals were not asserted. This counter is the
summation of the values of the
rptrMonitorPortReadableFrames counters for all of
the ports in the group.
This statistic provides one of the parameters
necessary for obtaining the packet error rate.
The approximate minimum time for rollover of this
counter is 80 hours in a 10Mb/s repeater."
::= { rptrMonitorGroupEntry 2 }
rptrMonitorGroupTotalOctets OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS deprecated
DESCRIPTION
"********* THIS OBJECT IS DEPRECATED **********
The total number of octets contained in the valid
frames that have been received on the ports in
this group. This counter is the summation of the
values of the rptrMonitorPortReadableOctets
counters for all of the ports in the group.
This statistic provides an indicator of the total
data transferred. The approximate minimum time
for rollover of this counter is 58 minutes in a
10Mb/s repeater."
::= { rptrMonitorGroupEntry 3 }
rptrMonitorGroupTotalErrors OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS deprecated
DESCRIPTION
"********* THIS OBJECT IS DEPRECATED **********
The total number of errors which have occurred on
all of the ports in this group. This counter is
the summation of the values of the
rptrMonitorPortTotalErrors counters for all of the
ports in the group."
::= { rptrMonitorGroupEntry 4 }
-- Statistics at the port level. --
rptrMonitorPortTable OBJECT-TYPE
SYNTAX SEQUENCE OF RptrMonitorPortEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Table of performance and error statistics for the
ports. The number of entries is the same as that
in the rptrPortTable.
The columnar object rptrMonitorPortLastChange
is used to indicate possible discontinuities
of counter type columnar objects in the table."
::= { rptrMonitorPortInfo 1 }
rptrMonitorPortEntry OBJECT-TYPE
SYNTAX RptrMonitorPortEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry in the table, containing performance and
error statistics for a single port."
INDEX { rptrMonitorPortGroupIndex, rptrMonitorPortIndex }
::= { rptrMonitorPortTable 1 }
RptrMonitorPortEntry ::=
SEQUENCE {
rptrMonitorPortGroupIndex
Integer32,
rptrMonitorPortIndex
Integer32,
rptrMonitorPortReadableFrames
Counter32,
rptrMonitorPortReadableOctets
Counter32,
rptrMonitorPortFCSErrors
Counter32,
rptrMonitorPortAlignmentErrors
Counter32,
rptrMonitorPortFrameTooLongs
Counter32,
rptrMonitorPortShortEvents
Counter32,
rptrMonitorPortRunts
Counter32,
rptrMonitorPortCollisions
Counter32,
rptrMonitorPortLateEvents
Counter32,
rptrMonitorPortVeryLongEvents
Counter32,
rptrMonitorPortDataRateMismatches
Counter32,
rptrMonitorPortAutoPartitions
Counter32,
rptrMonitorPortTotalErrors
Counter32,
rptrMonitorPortLastChange
TimeStamp
}
rptrMonitorPortGroupIndex OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object identifies the group containing the
port for which this entry contains information."
::= { rptrMonitorPortEntry 1 }
rptrMonitorPortIndex OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object identifies the port within the group
for which this entry contains information."
REFERENCE
"[IEEE 802.3 Mgt], 30.4.3.1.1, aPortID."
::= { rptrMonitorPortEntry 2 }
rptrMonitorPortReadableFrames OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object is the number of frames of valid
frame length that have been received on this port.
This counter is incremented by one for each frame
received on this port whose OctetCount is greater
than or equal to minFrameSize and less than or
equal to maxFrameSize (Ref: IEEE 802.3 Std,
4.4.2.1) and for which the FCSError and
CollisionEvent signals are not asserted.
A discontinuity may occur in the value
when the value of object
rptrMonitorPortLastChange changes.
This statistic provides one of the parameters
necessary for obtaining the packet error rate.
The approximate minimum time for rollover of this
counter is 80 hours at 10Mb/s."
REFERENCE
"[IEEE 802.3 Mgt], 30.4.3.1.4, aReadableFrames."
::= { rptrMonitorPortEntry 3 }
rptrMonitorPortReadableOctets OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object is the number of octets contained in
valid frames that have been received on this port.
This counter is incremented by OctetCount for each
frame received on this port which has been
determined to be a readable frame (i.e., including
FCS octets but excluding framing bits and dribble
bits).
A discontinuity may occur in the value
when the value of object
rptrMonitorPortLastChange changes.
This statistic provides an indicator of the total
data transferred. The approximate minimum time
for rollover of this counter in a 10Mb/s repeater
is 58 minutes.
For ports receiving traffic at a maximum rate in
a 100Mb/s repeater, this counter can roll over
in less than 6 minutes. Since that amount of time
could be less than a management station's poll cycle
time, in order to avoid a loss of information a
management station is advised to also poll the
rptrMonitorPortUpper32Octets object, or to use the
64-bit counter defined by
rptrMonitorPortHCReadableOctets instead of the
two 32-bit counters."
REFERENCE
"[IEEE 802.3 Mgt], 30.4.3.1.5, aReadableOctets."
::= { rptrMonitorPortEntry 4 }
rptrMonitorPortFCSErrors OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This counter is incremented by one for each frame
received on this port with the FCSError signal
asserted and the FramingError and CollisionEvent
signals deasserted and whose OctetCount is greater
than or equal to minFrameSize and less than or
equal to maxFrameSize (Ref: 4.4.2.1, IEEE 802.3
Std).
A discontinuity may occur in the value
when the value of object
rptrMonitorPortLastChange changes.
The approximate minimum time for rollover of this
counter is 80 hours at 10Mb/s."
REFERENCE
"[IEEE 802.3 Mgt], 30.4.3.1.6,
aFrameCheckSequenceErrors."
::= { rptrMonitorPortEntry 5 }
rptrMonitorPortAlignmentErrors OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This counter is incremented by one for each frame
received on this port with the FCSError and
FramingError signals asserted and CollisionEvent
signal deasserted and whose OctetCount is greater
than or equal to minFrameSize and less than or
equal to maxFrameSize (Ref: IEEE 802.3 Std,
4.4.2.1). If rptrMonitorPortAlignmentErrors is
incremented then the rptrMonitorPortFCSErrors
Counter shall not be incremented for the same
frame.
A discontinuity may occur in the value
when the value of object
rptrMonitorPortLastChange changes.
The approximate minimum time for rollover of this
counter is 80 hours at 10Mb/s."
REFERENCE
"[IEEE 802.3 Mgt], 30.4.3.1.7, aAlignmentErrors."
::= { rptrMonitorPortEntry 6 }
rptrMonitorPortFrameTooLongs OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This counter is incremented by one for each frame
received on this port whose OctetCount is greater
than maxFrameSize (Ref: 4.4.2.1, IEEE 802.3 Std).
If rptrMonitorPortFrameTooLongs is incremented
then neither the rptrMonitorPortAlignmentErrors
nor the rptrMonitorPortFCSErrors counter shall be
incremented for the frame.
A discontinuity may occur in the value
when the value of object
rptrMonitorPortLastChange changes.
The approximate minimum time for rollover of this
counter is 61 days in a 10Mb/s repeater."
REFERENCE
"[IEEE 802.3 Mgt], 30.4.3.1.8, aFramesTooLong."
::= { rptrMonitorPortEntry 7 }
rptrMonitorPortShortEvents OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This counter is incremented by one for each
CarrierEvent on this port with ActivityDuration
less than ShortEventMaxTime. ShortEventMaxTime is
greater than 74 bit times and less than 82 bit
times. ShortEventMaxTime has tolerances included
to provide for circuit losses between a
conformance test point at the AUI and the
measurement point within the state machine.
Notes:
ShortEvents may indicate externally
generated noise hits which will cause the repeater
to transmit Runts to its other ports, or propagate
a collision (which may be late) back to the
transmitting DTE and damaged frames to the rest of
the network.
Implementors may wish to consider selecting the
ShortEventMaxTime towards the lower end of the
allowed tolerance range to accommodate bit losses
suffered through physical channel devices not
budgeted for within this standard.
The significance of this attribute is different
in 10 and 100 Mb/s collision domains. Clause 9
repeaters perform fragment extension of short
events which would be counted as runts on the
interconnect ports of other repeaters. Clause
27 repeaters do not perform fragment extension.
A discontinuity may occur in the value
when the value of object
rptrMonitorPortLastChange changes.
The approximate minimum time for rollover of this
counter is 16 hours in a 10Mb/s repeater."
REFERENCE
"[IEEE 802.3 Mgt], 30.4.3.1.9, aShortEvents."
::= { rptrMonitorPortEntry 8 }
rptrMonitorPortRunts OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This counter is incremented by one for each
CarrierEvent on this port that meets one of the
following two conditions. Only one test need be
made. a) The ActivityDuration is greater than
ShortEventMaxTime and less than ValidPacketMinTime
and the CollisionEvent signal is deasserted. b)
The OctetCount is less than 64, the
ActivityDuration is greater than ShortEventMaxTime
and the CollisionEvent signal is deasserted.
ValidPacketMinTime is greater than or equal to 552
bit times and less than 565 bit times.
An event whose length is greater than 74 bit times
but less than 82 bit times shall increment either
the shortEvents counter or the runts counter but
not both. A CarrierEvent greater than or equal to
552 bit times but less than 565 bit times may or
may not be counted as a runt.
ValidPacketMinTime has tolerances included to
provide for circuit losses between a conformance
test point at the AUI and the measurement point
within the state machine.
Runts usually indicate collision fragments, a
normal network event. In certain situations
associated with large diameter networks a
percentage of collision fragments may exceed
ValidPacketMinTime.
A discontinuity may occur in the value
when the value of object
rptrMonitorPortLastChange changes.
The approximate minimum time for rollover of this
counter is 16 hours in a 10Mb/s repeater."
REFERENCE
"[IEEE 802.3 Mgt], 30.4.3.1.10, aRunts."
::= { rptrMonitorPortEntry 9 }
rptrMonitorPortCollisions OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"For a clause 9 repeater, this counter is
incremented by one for any CarrierEvent signal
on any port for which the CollisionEvent signal
on this port is asserted. For a clause 27
repeater port the counter increments on entering
the Collision Count Increment state of the
partition state diagram (fig 27-8 of
[IEEE 802.3 Std]).
A discontinuity may occur in the value
when the value of object
rptrMonitorPortLastChange changes.
The approximate minimum time for rollover of this
counter is 16 hours in a 10Mb/s repeater."
REFERENCE
"[IEEE 802.3 Mgt], 30.4.3.1.11, aCollisions."
::= { rptrMonitorPortEntry 10 }
rptrMonitorPortLateEvents OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"For a clause 9 repeater port, this counter is
incremented by one for each CarrierEvent
on this port in which the CollIn(X)
variable transitions to the value SQE (Ref:
9.6.6.2, IEEE 802.3 Std) while the
ActivityDuration is greater than the
LateEventThreshold. For a clause 27 repeater
port, this counter is incremented by one on
entering the Collision Count Increment state
of the partition state diagram (fig 27-8)
while the ActivityDuration is greater than
the LateEvent- Threshold. Such a CarrierEvent
is counted twice, as both a collision and as a
lateEvent.
The LateEventThreshold is greater than 480 bit
times and less than 565 bit times.
LateEventThreshold has tolerances included to
permit an implementation to build a single
threshold to serve as both the LateEventThreshold
and ValidPacketMinTime threshold.
A discontinuity may occur in the value
when the value of object
rptrMonitorPortLastChange changes.
The approximate minimum time for rollover of this
counter is 81 hours in a 10Mb/s repeater."
REFERENCE
"[IEEE 802.3 Mgt], 30.4.3.1.12, aLateEvents."
::= { rptrMonitorPortEntry 11 }
rptrMonitorPortVeryLongEvents OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"For a clause 9 repeater port, this counter
is incremented by one for each CarrierEvent
whose ActivityDuration is greater than the
MAU Jabber Lockup Protection timer TW3
(Ref: 9.6.1 & 9.6.5, IEEE 802.3 Std).
For a clause 27 repeater port, this counter
is incremented by one on entry to the
Rx Jabber state of the receiver timer state
diagram (fig 27-7). Other counters may
be incremented as appropriate.
A discontinuity may occur in the value
when the value of object
rptrMonitorPortLastChange changes."
REFERENCE
"[IEEE 802.3 Mgt], 30.4.3.1.13, aVeryLongEvents."
::= { rptrMonitorPortEntry 12 }
rptrMonitorPortDataRateMismatches OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This counter is incremented by one for each
frame received by this port that meets all
of the conditions required by only one of the
following two measurement methods:
Measurement method A: 1) The CollisionEvent
signal is not asserted (10Mb/s operation) or
the Collision Count Increment state of the
partition state diagram (fig 27-8 of
[IEEE 802.3 Std]) has not been entered
(100Mb/s operation). 2) The ActivityDuration
is greater than ValidPacketMinTime. 3) The
frequency (data rate) is detectably mismatched
from the local transmit frequency.
Measurement method B: 1) The CollisionEvent
signal is not asserted (10Mb/s operation)
or the Collision Count Increment state of the
partition state diagram (fig 27-8 of
[IEEE 802.3 Std]) has not been entered
(100Mb/s operation). 2) The OctetCount is
greater than 63. 3) The frequency (data
rate) is detectably mismatched from the local
transmit frequency. The exact degree of
mismatch is vendor specific and is to be
defined by the vendor for conformance testing.
When this event occurs, other counters whose
increment conditions were satisfied may or may not
also be incremented, at the implementor's
discretion. Whether or not the repeater was able
to maintain data integrity is beyond the scope of
this standard.
A discontinuity may occur in the value
when the value of object
rptrMonitorPortLastChange changes."
REFERENCE
"[IEEE 802.3 Mgt], 30.4.3.1.14, aDataRateMismatches."
::= { rptrMonitorPortEntry 13 }
rptrMonitorPortAutoPartitions OBJECT-TYPE
SYNTAX Counter32 MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This counter is incremented by one for
each time the repeater has automatically
partitioned this port.
The conditions that cause a clause 9
repeater port to partition are specified in
the partition state diagram in clause 9 of
[IEEE 802.3 Std]. They are not differentiated
here. A clause 27 repeater port partitions
on entry to the Partition Wait state of the
partition state diagram (fig 27-8 in
[IEEE 802.3 Std]).
A discontinuity may occur in the value
when the value of object
rptrMonitorPortLastChange changes."
REFERENCE
"[IEEE 802.3 Mgt], 30.4.3.1.15, aAutoPartitions."
::= { rptrMonitorPortEntry 14 }
rptrMonitorPortTotalErrors OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of errors which have occurred on
this port. This counter is the summation of the
values of other error counters (for the same
port), namely:
rptrMonitorPortFCSErrors,
rptrMonitorPortAlignmentErrors,
rptrMonitorPortFrameTooLongs,
rptrMonitorPortShortEvents,
rptrMonitorPortLateEvents,
rptrMonitorPortVeryLongEvents,
rptrMonitorPortDataRateMismatches, and
rptrMonitorPortSymbolErrors.
This counter is redundant in the sense that it is
the summation of information already available
through other objects. However, it is included
specifically because the regular retrieval of this
object as a means of tracking the health of a port
provides a considerable optimization of network
management traffic over the otherwise necessary
retrieval of the summed counters.
Note that rptrMonitorPortRunts is not included
in this total; this is because runts usually
indicate collision fragments, a normal network
event.
A discontinuity may occur in the value
when the value of object
rptrMonitorPortLastChange changes."
::= { rptrMonitorPortEntry 15 }
rptrMonitorPortLastChange OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of sysUpTime when the last of
the following occurred:
1) the agent cold- or warm-started;
2) the row for the port was created
(such as when a device or module was added
to the system); or
3) any condition that would cause one of
the counters for the row to experience
a discontinuity."
::= { rptrMonitorPortEntry 16 }
rptrMonitor100PortTable OBJECT-TYPE
SYNTAX SEQUENCE OF RptrMonitor100PortEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Table of additional performance and error
statistics for 100Mb/s ports, above and
beyond those parameters that apply to both
10 and 100Mbps ports. Entries exist only for
ports attached to 100Mbps repeaters.
The columnar object rptrMonitorPortLastChange
is used to indicate possible discontinuities
of counter type columnar objects in this table."
::= { rptrMonitorPortInfo 2 }
rptrMonitor100PortEntry OBJECT-TYPE
SYNTAX RptrMonitor100PortEntry MAX-ACCESS not-accessible STATUS current
DESCRIPTION
"An entry in the table, containing performance
and error statistics for a single 100Mb/s port."
INDEX { rptrMonitorPortGroupIndex, rptrMonitorPortIndex }
::= { rptrMonitor100PortTable 1 }
RptrMonitor100PortEntry ::=
SEQUENCE {
rptrMonitorPortIsolates
Counter32,
rptrMonitorPortSymbolErrors
Counter32,
rptrMonitorPortUpper32Octets
Counter32,
rptrMonitorPortHCReadableOctets
Counter64
}
rptrMonitorPortIsolates OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This counter is incremented by one each time that
the repeater port automatically isolates as a
consequence of false carrier events. The conditions
which cause a port to automatically isolate are
defined by the transition from the False Carrier
state to the Link Unstable state of the carrier
integrity state diagram (figure 27-9)
[IEEE 802.3 Standard].
Note: Isolates do not affect the value of
the PortOperStatus object.
A discontinuity may occur in the value
when the value of object
rptrMonitorPortLastChange changes."
REFERENCE
"[IEEE 802.3 Mgt], 30.4.3.1.16, aIsolates."
::= { rptrMonitor100PortEntry 1 }
rptrMonitorPortSymbolErrors OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This counter is incremented by one each time when
valid length packet was received at the port and
there was at least one occurrence of an invalid
data symbol. This can increment only once per valid
carrier event. A collision presence at any port of
the repeater containing port N, will not cause this
attribute to increment.
A discontinuity may occur in the value
when the value of object
rptrMonitorPortLastChange changes.
The approximate minimum time for rollover of this
counter is 7.4 hours at 100Mb/s."
REFERENCE
"[IEEE 802.3 Mgt], 30.4.3.1.17,
aSymbolErrorDuringPacket."
::= { rptrMonitor100PortEntry 2 }
rptrMonitorPortUpper32Octets OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object is the number of octets contained in
valid frames that have been received on this port,
modulo 2**32. That is, it contains the upper 32
bits of a 64-bit octets counter, of which the
lower 32 bits are contained in the
rptrMonitorPortReadableOctets object.
This two-counter mechanism is provided for those
network management protocols that do not support
64-bit counters (e.g. SNMP V1) and are used to
manage a repeater type of 100Mb/s.
Conformance clauses for this MIB are defined such
that implementation of this object is not required
in a system which does not support 100Mb/s.
However, systems with mixed 10 and 100Mb/s ports
may implement this object across all ports,
including 10Mb/s. If this object is implemented,
it must be according to the definition in the first
paragraph of this description; that is, the value
of this object MUST be a valid count.
A discontinuity may occur in the value
when the value of object
rptrMonitorPortLastChange changes."
::= { rptrMonitor100PortEntry 3 }
rptrMonitorPortHCReadableOctets OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object is the number of octets contained in
valid frames that have been received on this port.
This counter is incremented by OctetCount for each
frame received on this port which has been
determined to be a readable frame (i.e., including
FCS octets but excluding framing bits and dribble
bits).
This statistic provides an indicator of the total
data transferred.
This counter is a 64-bit version of rptrMonitor-
PortReadableOctets. It should be used by network
management protocols which suppport 64-bit counters
(e.g. SNMPv2).
Conformance clauses for this MIB are defined such
that implementation of this object is not required
in a system which does not support 100Mb/s.
However, systems with mixed 10 and 100Mb/s ports
may implement this object across all ports,
including 10Mb/s. If this object is implemented,
it must be according to the definition in the first
paragraph of this description; that is, the value
of this object MUST be a valid count.
A discontinuity may occur in the value
when the value of object
rptrMonitorPortLastChange changes."
REFERENCE
"[IEEE 802.3 Mgt], 30.4.3.1.5, aReadableOctets."
::= { rptrMonitor100PortEntry 4 }
-- New version of statistics at the repeater level. -- -- Statistics objects for each managed repeater -- in the system.
rptrMonTable OBJECT-TYPE
SYNTAX SEQUENCE OF RptrMonEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table of information about each
non-trivial repeater. The number of entries
in this table is the same as the number of
entries in the rptrInfoTable.
The columnar object rptrInfoLastChange is
used to indicate possible discontinuities of
counter type columnar objects in this table."
::= { rptrMonitorAllRptrInfo 1 }
rptrMonEntry OBJECT-TYPE
SYNTAX RptrMonEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry in the table, containing information
about a single non-trivial repeater."
INDEX { rptrInfoId }
::= { rptrMonTable 1 }
RptrMonEntry ::=
SEQUENCE {
rptrMonTxCollisions
Counter32,
rptrMonTotalFrames
Counter32,
rptrMonTotalErrors
Counter32,
rptrMonTotalOctets
Counter32
}
rptrMonTxCollisions OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"For a clause 9 (10Mb/s) repeater, this counter
is incremented every time the repeater state
machine enters the TRANSMIT COLLISION state
from any state other than ONE PORT LEFT
(Ref: Fig 9-2 [IEEE 802.3 Std]).
For a clause 27 repeater, this counter is
incremented every time the repeater core state
diagram enters the Jam state as a result of
Activity(ALL) > 1 (fig 27-2 [IEEE 802.3 Std]).
The approximate minimum time for rollover of this
counter is 16 hours in a 10Mb/s repeater and 1.6
hours in a 100Mb/s repeater."
REFERENCE
"[IEEE 802.3 Mgt], 30.4.1.1.8, aTransmitCollisions"
::= { rptrMonEntry 1 }
rptrMonTotalFrames OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of frames of valid frame length
that have been received on the ports in this repeater
and for which the FCSError and CollisionEvent
signals were not asserted. If an implementation
can not obtain a count of frames as seen by
the repeater itself, this counter may be
implemented as the summation of the values of the
rptrMonitorPortReadableFrames counters for all of
the ports in the repeater.
This statistic provides one of the parameters
necessary for obtaining the packet error rate.
The approximate minimum time for rollover of this
counter is 80 hours in a 10Mb/s repeater."
::= { rptrMonEntry 3 }
rptrMonTotalErrors OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of errors which have occurred on
all of the ports in this repeater. The errors
included in this count are the same as those listed
for the rptrMonitorPortTotalErrors counter. If an
implementation can not obtain a count of these
errors as seen by the repeater itself, this counter
may be implemented as the summation of the values of
the rptrMonitorPortTotalErrors counters for all of
the ports in the repeater."
::= { rptrMonEntry 4 }
rptrMonTotalOctets OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of octets contained in the valid
frames that have been received on the ports in
this group. If an implementation can not obtain
a count of octets as seen by the repeater itself,
this counter may be the summation of the
values of the rptrMonitorPortReadableOctets
counters for all of the ports in the group.
This statistic provides an indicator of the total
data transferred. The approximate minimum time
for rollover of this counter in a 10Mb/s repeater
is 58 minutes divided by the number of ports in
the repeater.
For 100Mb/s repeaters processing traffic at a
maximum rate, this counter can roll over in less
than 6 minutes divided by the number of ports in
the repeater. Since that amount of time could
be less than a management station's poll cycle
time, in order to avoid a loss of information a
management station is advised to also poll the
rptrMonUpper32TotalOctets object, or to use the
64-bit counter defined by rptrMonHCTotalOctets
instead of the two 32-bit counters."
::= { rptrMonEntry 5 }
rptrMon100Table OBJECT-TYPE
SYNTAX SEQUENCE OF RptrMon100Entry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table of additional information about each
100Mb/s repeater, augmenting the entries in
the rptrMonTable. Entries exist in this table
only for 100Mb/s repeaters.
The columnar object rptrInfoLastChange is
used to indicate possible discontinuities of
counter type columnar objects in this table."
::= { rptrMonitorAllRptrInfo 2 }
rptrMon100Entry OBJECT-TYPE
SYNTAX RptrMon100Entry MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry in the table, containing information
about a single 100Mbps repeater."
INDEX { rptrInfoId }
::= { rptrMon100Table 1 }
RptrMon100Entry ::=
SEQUENCE {
rptrMonUpper32TotalOctets
Counter32,
rptrMonHCTotalOctets
Counter64
}
rptrMonUpper32TotalOctets OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of octets contained in the valid
frames that have been received on the ports in
this repeater, modulo 2**32. That is, it contains
the upper 32 bits of a 64-bit counter, of which
the lower 32 bits are contained in the
rptrMonTotalOctets object. If an implementation
can not obtain a count of octets as seen
by the repeater itself, the 64-bit value
may be the summation of the values of the
rptrMonitorPortReadableOctets counters combined
with the corresponding rptrMonitorPortUpper32Octets
counters for all of the ports in the repeater.
This statistic provides an indicator of the total
data transferred within the repeater.
This two-counter mechanism is provided for those
network management protocols that do not support
64-bit counters (e.g. SNMP V1) and are used to
manage a repeater type of 100Mb/s.
Conformance clauses for this MIB are defined such
that implementation of this object is not required
in a system which does not support 100Mb/s.
However, systems with mixed 10 and 100Mb/s ports
may implement this object across all ports,
including 10Mb/s. If this object is implemented,
it must be according to the definition in the first
paragraph of this description; that is, the value
of this object MUST be a valid count."
::= { rptrMon100Entry 1 }
rptrMonHCTotalOctets OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of octets contained in the valid
frames that have been received on the ports in
this group. If a implementation can not obtain
a count of octets as seen by the repeater itself,
this counter may be the summation of the
values of the rptrMonitorPortReadableOctets
counters for all of the ports in the group.
This statistic provides an indicator of the total
data transferred.
This counter is a 64-bit (high-capacity) version
of rptrMonUpper32TotalOctets and rptrMonTotalOctets.
It should be used by network management protocols
which support 64-bit counters (e.g. SNMPv2).
Conformance clauses for this MIB are defined such
that implementation of this object is not required
in a system which does not support 100Mb/s.
However, systems with mixed 10 and 100Mb/s ports
may implement this object across all ports,
including 10Mb/s. If this object is implemented,
it must be according to the definition in the first
paragraph of this description; that is, the value
of this object MUST be a valid count."
::= { rptrMon100Entry 2 }
-- -- The Repeater Address Search Table -- -- This table provides an active address tracking -- capability which can be also used to collect the -- necessary information for mapping the topology -- of a network. Note that an NMS is required to have -- read-write access to the table in order to access -- this function. Section 4, "Topology Mapping", -- contains a description of an algorithm which can -- make use of this table, in combination with the
-- forwarding databases of managed bridges/switches -- in the network, to map network topology. --
rptrAddrSearchTable OBJECT-TYPE
SYNTAX SEQUENCE OF RptrAddrSearchEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table contains one entry per repeater in the
system. It defines objects which allow a network
management application to instruct an agent to watch
for a given MAC address and report which port it
was seen on. Only one address search can be in
progress on each repeater at any one time. Before
starting an address search, a management application
should obtain 'ownership' of the entry in
rptrAddrSearchTable for the repeater that is to
perform the search. This is accomplished with the
rptrAddrSearchLock and rptrAddrSearchStatus as
follows:
try_again:
get(rptrAddrSearchLock, rptrAddrSearchStatus)
while (rptrAddrSearchStatus != notInUse)
{
/* Loop waiting for objects to be available*/
short delay
get(rptrAddrSearchLock, rptrAddrSearchStatus)
}
/* Try to claim map objects */
lock_value = rptrAddrSearchLock
if ( set(rptrAddrSearchLock = lock_value,
rptrAddrSearchStatus = inUse,
rptrAddrSearchOwner = 'my-IP-address)
== FAILURE)
/* Another manager got the lock */
goto try_again
/* I have the lock */
set (rptrAddrSearchAddress = <search target>)
wait for rptrAddrSearchState to change from none
if (rptrAddrSearchState == single)
get (rptrAddrSearchGroup, rptrAddrSearchPort)
/* release the lock, making sure not to overwrite
anyone else's lock */
set (rptrAddrSearchLock = lock_value+1,
rptrAddrSearchStatus = notInUse,
rptrAddrSearchOwner = )
A management station first retrieves the values of
the appropriate instances of the rptrAddrSearchLock
and rptrAddrSearchStatus objects, periodically
repeating the retrieval if necessary, until the value
of rptrAddrSearchStatus is 'notInUse'. The
management station then tries to set the same
instance of the rptrAddrSearchLock object to the
value it just retrieved, the same instance of the
rptrAddrSearchStatus object to 'inUse', and the
corresponding instance of rptrAddrSearchOwner to a
value indicating itself. If the set operation
succeeds, then the management station has obtained
ownership of the rptrAddrSearchEntry, and the value
of rptrAddrSearchLock is incremented by the agent (as
per the semantics of TestAndIncr). Failure of the
set operation indicates that some other manager has
obtained ownership of the rptrAddrSearchEntry.
Once ownership is obtained, the management station
can proceed with the search operation. Note that the
agent will reset rptrAddrSearchStatus to 'notInUse'
if it has been in the 'inUse' state for an abnormally
long period of time, to prevent a misbehaving manager
from permanently locking the entry. It is suggested
that this timeout period be between one and five
minutes.
When the management station has completed its search
operation, it should free the entry by setting
the instance of the rptrAddrSearchLock object to the
previous value + 1, the instance of the
rptrAddrSearchStatus to 'notInUse', and the instance
of rptrAddrSearchOwner to a zero length string. This
is done to prevent overwriting another station's
lock."
::= { rptrAddrTrackRptrInfo 1 }
rptrAddrSearchEntry OBJECT-TYPE
SYNTAX RptrAddrSearchEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION
"An entry containing objects for invoking an address
search on a repeater."
INDEX { rptrInfoId }
::= { rptrAddrSearchTable 1 }
RptrAddrSearchEntry ::=
SEQUENCE {
rptrAddrSearchLock TestAndIncr,
rptrAddrSearchStatus INTEGER,
rptrAddrSearchAddress MacAddress,
rptrAddrSearchState INTEGER,
rptrAddrSearchGroup Integer32,
rptrAddrSearchPort Integer32,
rptrAddrSearchOwner OwnerString
}
rptrAddrSearchLock OBJECT-TYPE
SYNTAX TestAndIncr
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This object is used by a management station as an
advisory lock for this rptrAddrSearchEntry."
::= { rptrAddrSearchEntry 1 }
rptrAddrSearchStatus OBJECT-TYPE
SYNTAX INTEGER {
notInUse(1),
inUse(2)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This object is used to indicate that some management
station is currently using this rptrAddrSearchEntry.
Cooperating managers should set this object to
'notInUse' when they are finished using this entry.
The agent will automatically set the value of this
object to 'notInUse' if it has been set to 'inUse'
for an unusually long period of time."
::= { rptrAddrSearchEntry 2 }
rptrAddrSearchAddress OBJECT-TYPE
SYNTAX MacAddress MAX-ACCESS read-write STATUS current DESCRIPTION
"This object is used to search for a specified MAC
address. When this object is set, an address search
begins. This automatically sets the corresponding
instance of the rptrAddrSearchState object to 'none'
and the corresponding instances of the
rptrAddrSearchGroup and rptrAddrSearchPort objects to
0.
When a valid frame is received by this repeater with
a source MAC address which matches the current value
of rptrAddrSearchAddress, the agent will update the
corresponding instances of rptrAddrSearchState,
rptrAddrSearchGroup and rptrAddrSearchPort to reflect
the current status of the search, and the group and
port on which the frame was seen."
::= { rptrAddrSearchEntry 3 }
rptrAddrSearchState OBJECT-TYPE
SYNTAX INTEGER {
none(1),
single(2),
multiple(3)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The current state of the MAC address search on this
repeater. This object is initialized to 'none' when
the corresponding instance of rptrAddrSearchAddress
is set. If the agent detects the address on exactly
one port, it will set this object to 'single', and
set the corresponding instances of
rptrAddrSearchGroup and rptrAddrSearchPort to reflect
the group and port on which the address was heard.
If the agent detects the address on more than one
port, it will set this object to 'multiple'."
::= { rptrAddrSearchEntry 4 }
rptrAddrSearchGroup OBJECT-TYPE
SYNTAX Integer32 (0..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The group from which an error-free frame whose
source address is equal to the corresponding instance
of rptrAddrSearchAddress has been received. The
value of this object is undefined when the
corresponding instance of rptrAddrSearchState is
equal to 'none' or 'multiple'."
::= { rptrAddrSearchEntry 5 }
rptrAddrSearchPort OBJECT-TYPE
SYNTAX Integer32 (0..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The port rom which an error-free frame whose
source address is equal to the corresponding instance
of rptrAddrSearchAddress has been received. The
value of this object is undefined when the
corresponding instance of rptrAddrSearchState is
equal to 'none' or 'multiple'."
::= { rptrAddrSearchEntry 6 }
rptrAddrSearchOwner OBJECT-TYPE
SYNTAX OwnerString
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The entity which currently has 'ownership' of this
rptrAddrSearchEntry."
::= { rptrAddrSearchEntry 7 }
-- -- The Port Address Tracking Table -- -- This table provides a way for a network management -- application to passively gather information (using -- read-only privileges) about which network addresses -- are connected to which ports of a repeater. --
rptrAddrTrackTable OBJECT-TYPE
SYNTAX SEQUENCE OF RptrAddrTrackEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Table of address mapping information about the
ports."
::= { rptrAddrTrackPortInfo 1 }
rptrAddrTrackEntry OBJECT-TYPE
SYNTAX RptrAddrTrackEntry MAX-ACCESS not-accessible STATUS current
DESCRIPTION
"An entry in the table, containing address mapping
information about a single port."
INDEX { rptrAddrTrackGroupIndex, rptrAddrTrackPortIndex }
::= { rptrAddrTrackTable 1 }
RptrAddrTrackEntry ::=
SEQUENCE {
rptrAddrTrackGroupIndex
INTEGER,
rptrAddrTrackPortIndex
INTEGER,
rptrAddrTrackLastSourceAddress -- DEPRECATED OBJECT
MacAddress,
rptrAddrTrackSourceAddrChanges
Counter32,
rptrAddrTrackNewLastSrcAddress
OptMacAddr,
rptrAddrTrackCapacity
Integer32
}
rptrAddrTrackGroupIndex OBJECT-TYPE
SYNTAX INTEGER (1..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object identifies the group containing the
port for which this entry contains information."
::= { rptrAddrTrackEntry 1 }
rptrAddrTrackPortIndex OBJECT-TYPE
SYNTAX INTEGER (1..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object identifies the port within the group
for which this entry contains information."
REFERENCE
"[IEEE 802.3 Mgt], 30.4.3.1.1, aPortID."
::= { rptrAddrTrackEntry 2 }
rptrAddrTrackLastSourceAddress OBJECT-TYPE
SYNTAX MacAddress
MAX-ACCESS read-only
STATUS deprecated
DESCRIPTION
"********* THIS OBJECT IS DEPRECATED **********
This object is the SourceAddress of the last
readable frame (i.e., counted by
rptrMonitorPortReadableFrames) received by this
port.
This object has been deprecated because its value
is undefined when no frames have been observed on
this port. The replacement object is
rptrAddrTrackNewLastSrcAddress."
REFERENCE
"[IEEE 802.3 Mgt], 30.4.3.1.18, aLastSourceAddress."
::= { rptrAddrTrackEntry 3 }
rptrAddrTrackSourceAddrChanges OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This counter is incremented by one for each time
that the rptrAddrTrackLastSourceAddress attribute
for this port has changed.
This may indicate whether a link is connected to a
single DTE or another multi-user segment.
A discontinuity may occur in the value when the
value of object rptrMonitorPortLastChange changes.
The approximate minimum time for rollover of this
counter is 81 hours in a 10Mb/s repeater."
REFERENCE
"[IEEE 802.3 Mgt], 30.4.3.1.19, aSourceAddressChanges."
::= { rptrAddrTrackEntry 4 }
rptrAddrTrackNewLastSrcAddress OBJECT-TYPE
SYNTAX OptMacAddr
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object is the SourceAddress of the last
readable frame (i.e., counted by
rptrMonitorPortReadableFrames) received by this
port. If no frames have been received by this
port since the agent began monitoring the port
activity, the agent shall return a string of
length zero."
REFERENCE
"[IEEE 802.3 Mgt], 30.4.3.1.18, aLastSourceAddress."
::= { rptrAddrTrackEntry 5 }
rptrAddrTrackCapacity OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The maximum number of addresses that can be
detected on this port. This value indicates
to the maximum number of entries in the
rptrExtAddrTrackTable relative to this port.
If this object has the value of 1, the agent
implements only the LastSourceAddress mechanism
described by RFC 1368 or RFC 1516."
::= { rptrAddrTrackEntry 6 }
-- Table for multiple addresses per port
rptrExtAddrTrackTable OBJECT-TYPE
SYNTAX SEQUENCE OF RptrExtAddrTrackEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table to extend the address tracking table (i.e.,
rptrAddrTrackTable) with a list of source MAC
addresses that were recently received on each port.
The number of ports is the same as the number
of entries in table rptrPortTable. The number of
entries in this table depends on the agent/repeater
implementation and the number of different
addresses received on each port.
The first entry for each port contains
the same MAC address that is given by the
rptrAddrTrackNewLastSrcAddress for that port.
Entries in this table for a particular port are
retained when that port is switched from one
repeater to another.
The ordering of MAC addresses listed for a
particular port is implementation dependent."
::= { rptrAddrTrackPortInfo 2 }
rptrExtAddrTrackEntry OBJECT-TYPE
SYNTAX RptrExtAddrTrackEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A row in the table of extended address tracking
information for ports. Entries can not be directly
created or deleted via SNMP operations."
INDEX { rptrAddrTrackGroupIndex,
rptrAddrTrackPortIndex,
rptrExtAddrTrackMacIndex }
::= { rptrExtAddrTrackTable 1 }
RptrExtAddrTrackEntry ::= SEQUENCE {
rptrExtAddrTrackMacIndex Integer32, rptrExtAddrTrackSourceAddress MacAddress }
rptrExtAddrTrackMacIndex OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The index of a source MAC address seen on
the port.
The ordering of MAC addresses listed for a
particular port is implementation dependent.
There is no implied relationship between a
particular index and a particular MAC
address. The index for a particular MAC
address may change without notice."
::= { rptrExtAddrTrackEntry 1 }
rptrExtAddrTrackSourceAddress OBJECT-TYPE
SYNTAX MacAddress
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The source MAC address from a readable frame
(i.e., counted by rptrMonitorPortReadableFrames)
recently received by the port."
REFERENCE
"[IEEE 802.3 Mgt], 30.4.3.1.18, aLastSourceAddress."
::= { rptrExtAddrTrackEntry 2 }
-- The Repeater Top "N" Port Group
-- The Repeater Top N Port group is used to prepare reports that -- describe a list of ports ordered by one of the statistics in the -- Repeater Monitor Port Table. The statistic chosen by the -- management station is sampled over a management -- station-specified time interval, making the report rate based. -- The management station also specifies the number of ports that -- are reported. -- -- The rptrTopNPortControlTable is used to initiate the generation -- of a report. The management station may select the parameters -- of such a report, such as which repeater, which statistic, how -- many ports, and the start & stop times of the sampling. When -- the report is prepared, entries are created in the -- rptrTopNPortTable associated with the relevent -- rptrTopNControlEntry. These entries are static for -- each report after it has been prepared.
-- Note that counter discontinuities may appear in some -- implementations if ports' assignment to repeaters changes -- during the collection of data for a Top "N" report. -- A management application could read the corresponding -- rptrMonitorPortLastChange timestamp in order to check -- whether a discontinuity occurred.
rptrTopNPortControlTable OBJECT-TYPE
SYNTAX SEQUENCE OF RptrTopNPortControlEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table of control records for reports on the top `N'
ports for the rate of a selected counter. The number
of entries depends on the configuration of the agent.
The maximum number of entries is implementation
dependent."
::= { rptrTopNPortInfo 1 }
rptrTopNPortControlEntry OBJECT-TYPE
SYNTAX RptrTopNPortControlEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A set of parameters that control the creation of a
report of the top N ports according to several metrics."
INDEX { rptrTopNPortControlIndex }
::= { rptrTopNPortControlTable 1 }
RptrTopNPortControlEntry ::= SEQUENCE {
rptrTopNPortControlIndex
Integer32,
rptrTopNPortRepeaterId
Integer32,
rptrTopNPortRateBase
INTEGER,
rptrTopNPortTimeRemaining
Integer32,
rptrTopNPortDuration
Integer32,
rptrTopNPortRequestedSize
Integer32,
rptrTopNPortGrantedSize
Integer32,
rptrTopNPortStartTime
TimeStamp,
rptrTopNPortOwner
OwnerString,
rptrTopNPortRowStatus
RowStatus
}
rptrTopNPortControlIndex OBJECT-TYPE
SYNTAX Integer32 (1 .. 65535)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"An index that uniquely identifies an entry in the
rptrTopNPortControl table. Each such entry defines
one top N report prepared for a repeater or system."
::= { rptrTopNPortControlEntry 1 }
rptrTopNPortRepeaterId OBJECT-TYPE
SYNTAX Integer32 (0..2147483647)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Identifies the repeater for which a top N report will
be prepared (see rptrInfoId). If the value of this
object is positive, only ports assigned to this repeater
will be used to form the list in which to order the
Top N table. If this value is zero, all ports will be
eligible for inclusion on the list.
The value of this object may not be modified if the
associated rptrTopNPortRowStatus object is equal to
active(1).
If, for a particular row in this table, the repeater
specified by the value of this object goes away (is
removed from the rptrInfoTable) while the associated
rptrTopNPortRowStatus object is equal to active(1),
the row in this table is preserved by the agent but
the value of rptrTopNPortRowStatus is changed to
notInService(2), and the agent may time out the row
if appropriate. If the specified repeater comes
back (reappears in the rptrInfoTable) before the row
has been timed out, the management station must set
the value of the rptrTopNPortRowStatus object back
to active(1) if desired (the agent doesn't do this
automatically)."
::= { rptrTopNPortControlEntry 2 }
rptrTopNPortRateBase OBJECT-TYPE
SYNTAX INTEGER {
readableFrames(1),
readableOctets(2),
fcsErrors(3),
alignmentErrors(4),
frameTooLongs(5),
shortEvents(6),
runts(7),
collisions(8),
lateEvents(9),
veryLongEvents(10),
dataRateMismatches(11),
autoPartitions(12),
totalErrors(13),
isolates(14),
symbolErrors(15)
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The monitored variable, which the rptrTopNPortRate
variable is based upon.
The value of this object may not be modified if
the associated rptrTopNPortRowStatus object has
a value of active(1)."
::= { rptrTopNPortControlEntry 3 }
rptrTopNPortTimeRemaining OBJECT-TYPE
SYNTAX Integer32 (0..2147483647) MAX-ACCESS read-create STATUS current
DESCRIPTION
"The number of seconds left in the report
currently being collected. When this object
is modified by the management station, a new
collection is started, possibly aborting a
currently running report. The new value is
used as the requested duration of this report,
which is loaded into the associated
rptrTopNPortDuration object.
When this object is set to a non-zero value,
any associated rptrTopNPortEntries shall be
made inaccessible by the agent. While the value
of this object is non-zero, it decrements by one
per second until it reaches zero. During this
time, all associated rptrTopNPortEntries shall
remain inaccessible. At the time that this object
decrements to zero, the report is made accessible
in the rptrTopNPortTable. Thus, the rptrTopNPort
table needs to be created only at the end of the
collection interval.
If the value of this object is set to zero
while the associated report is running, the
running report is aborted and no associated
rptrTopNPortEntries are created."
DEFVAL { 0 }
::= { rptrTopNPortControlEntry 4 }
rptrTopNPortDuration OBJECT-TYPE
SYNTAX Integer32 (0..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of seconds that this report has
collected during the last sampling interval,
or if this report is currently being collected,
the number of seconds that this report is being
collected during this sampling interval.
When the associated rptrTopNPortTimeRemaining
object is set, this object shall be set by the
agent to the same value and shall not be modified
until the next time the rptrTopNPortTimeRemaining
is set.
This value shall be zero if no reports have been
requested for this rptrTopNPortControlEntry."
::= { rptrTopNPortControlEntry 5 }
rptrTopNPortRequestedSize OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The maximum number of repeater ports requested
for the Top N Table.
When this object is created or modified, the
agent should set rptrTopNPortGrantedSize as close
to this object as is possible for the particular
implementation and available resources."
DEFVAL { 10 }
::= { rptrTopNPortControlEntry 6 }
rptrTopNPortGrantedSize OBJECT-TYPE
SYNTAX Integer32 (0..65535)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The maximum number of repeater ports in the
top N table.
When the associated rptrTopNPortRequestedSize object is
created or modified, the agent should set this object as
closely to the requested value as is possible for the
particular implementation and available resources. The
agent must not lower this value except as a result of a
set to the associated rptrTopNPortRequestedSize object."
::= { rptrTopNPortControlEntry 7 }
rptrTopNPortStartTime OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of sysUpTime when this top N report was
last started. In other words, this is the time that
the associated rptrTopNPortTimeRemaining object was
modified to start the requested report.
If the report has not yet been started, the value
of this object is zero."
::= { rptrTopNPortControlEntry 8 }
rptrTopNPortOwner OBJECT-TYPE
SYNTAX OwnerString
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The entity that configured this entry and is
using the resources assigned to it."
::= { rptrTopNPortControlEntry 9 }
rptrTopNPortRowStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The status of this row.
If the value of this object is not equal to
active(1), all associated entries in the
rptrTopNPortTable shall be deleted by the
agent."
::= { rptrTopNPortControlEntry 10 }
-- Top "N" reports
rptrTopNPortTable OBJECT-TYPE
SYNTAX SEQUENCE OF RptrTopNPortEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table of reports for the top `N' ports based on
setting of associated control table entries. The
maximum number of entries depends on the number
of entries in table rptrTopNPortControlTable and
the value of object rptrTopNPortGrantedSize for
each entry.
For each entry in the rptrTopNPortControlTable,
repeater ports with the highest value of
rptrTopNPortRate shall be placed in this table
in decreasing order of that rate until there is
no more room or until there are no more ports."
::= { rptrTopNPortInfo 2 }
rptrTopNPortEntry OBJECT-TYPE
SYNTAX RptrTopNPortEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION
"A set of statistics for a repeater port that is
part of a top N report."
INDEX { rptrTopNPortControlIndex,
rptrTopNPortIndex }
::= { rptrTopNPortTable 1 }
RptrTopNPortEntry ::= SEQUENCE {
rptrTopNPortIndex
Integer32,
rptrTopNPortGroupIndex
Integer32,
rptrTopNPortPortIndex
Integer32,
rptrTopNPortRate
Gauge32
}
rptrTopNPortIndex OBJECT-TYPE
SYNTAX Integer32 (1..65535)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"An index that uniquely identifies an entry in
the rptrTopNPort table among those in the same
report. This index is between 1 and N, where N
is the number of entries in this report. Increasing
values of rptrTopNPortIndex shall be assigned to
entries with decreasing values of rptrTopNPortRate
until index N is assigned to the entry with the
lowest value of rptrTopNPortRate or there are no
more rptrTopNPortEntries.
No ports are included in a report where their
value of rptrTopNPortRate would be zero."
::= { rptrTopNPortEntry 1 }
rptrTopNPortGroupIndex OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object identifes the group containing
the port for this entry. (See also object
type rptrGroupIndex.)"
::= { rptrTopNPortEntry 2 }
rptrTopNPortPortIndex OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The index of the repeater port.
(See object type rptrPortIndex.)"
::= { rptrTopNPortEntry 3 }
rptrTopNPortRate OBJECT-TYPE
SYNTAX Gauge32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The amount of change in the selected variable
during this sampling interval for the identified
port. The selected variable is that port's
instance of the object selected by
rptrTopNPortRateBase."
::= { rptrTopNPortEntry 4 }
-- Notifications for use by Repeaters
rptrHealth NOTIFICATION-TYPE
OBJECTS { rptrOperStatus }
STATUS deprecated
DESCRIPTION
"********* THIS OBJECT IS DEPRECATED **********
In a system containing a single managed repeater,
the rptrHealth notification conveys information
related to the operational status of the repeater.
It is sent either when the value of
rptrOperStatus changes, or upon completion of a
non-disruptive test.
The rptrHealth notification must contain the
rptrOperStatus object. The agent may optionally
include the rptrHealthText object in the varBind
list. See the rptrOperStatus and rptrHealthText
objects for descriptions of the information that
is sent.
The agent must throttle the generation of
consecutive rptrHealth traps so that there is at
least a five-second gap between traps of this
type. When traps are throttled, they are dropped,
not queued for sending at a future time. (Note
that 'generating' a trap means sending to all
configured recipients.)"
REFERENCE
"[IEEE 802.3 Mgt], 30.4.1.3.1, nRepeaterHealth
notification."
::= { snmpDot3RptrMgt 0 1 }
rptrGroupChange NOTIFICATION-TYPE
OBJECTS { rptrGroupIndex }
STATUS deprecated
DESCRIPTION
"********* THIS OBJECT IS DEPRECATED **********
In a system containing a single managed repeater,
this notification is sent when a change occurs in the
group structure of the repeater. This occurs only
when a group is logically or physically removed
from or added to a repeater. The varBind list
contains the identifier of the group that was
removed or added.
The agent must throttle the generation of
consecutive rptrGroupChange traps for the same
group so that there is at least a five-second gap
between traps of this type. When traps are
throttled, they are dropped, not queued for
sending at a future time. (Note that 'generating'
a trap means sending to all configured
recipients.)"
REFERENCE
"[IEEE 802.3 Mgt], 30.4.1.3.3, nGroupMapChange
notification."
::= { snmpDot3RptrMgt 0 2 }
rptrResetEvent NOTIFICATION-TYPE
OBJECTS { rptrOperStatus }
STATUS deprecated
DESCRIPTION
"********* THIS OBJECT IS DEPRECATED **********
In a system containing a single managed repeater-unit,
the rptrResetEvent notification conveys information
related to the operational status of the repeater.
This trap is sent on completion of a repeater
reset action. A repeater reset action is defined
as an a transition to the START state of Fig 9-2
in section 9 [IEEE 802.3 Std], when triggered by a
management command (e.g., an SNMP Set on the
rptrReset object).
The agent must throttle the generation of
consecutive rptrResetEvent traps so that there is
at least a five-second gap between traps of this
type. When traps are throttled, they are dropped,
not queued for sending at a future time. (Note
that 'generating' a trap means sending to all
configured recipients.)
The rptrResetEvent trap is not sent when the agent
restarts and sends an SNMP coldStart or warmStart
trap. However, it is recommended that a repeater
agent send the rptrOperStatus object as an
optional object with its coldStart and warmStart
trap PDUs.
The rptrOperStatus object must be included in the
varbind list sent with this trap. The agent may
optionally include the rptrHealthText object as
well."
REFERENCE
"[IEEE 802.3 Mgt], 30.4.1.3.2, nRepeaterReset
notification."
::= { snmpDot3RptrMgt 0 3 }
-- Notifications for repeaters in a multiple-repeater implementation. -- An implementation may send either the single-repeater OR -- multiple-repeater version of these notifications (1 or 4; 2 or 5) -- but not both.
rptrInfoHealth NOTIFICATION-TYPE
OBJECTS { rptrInfoOperStatus }
STATUS current
DESCRIPTION
"In a system containing multiple managed repeaters,
the rptrInfoHealth notification conveys information
related to the operational status of a repeater.
It is sent either when the value of rptrInfoOperStatus
changes, or upon completion of a non-disruptive test.
The agent must throttle the generation of
consecutive rptrInfoHealth notifications for
the same repeater so that there is at least
a five-second gap between notifications of this type.
When notifications are throttled, they are dropped,
not queued for sending at a future time. (Note
that 'generating' a notification means sending
to all configured recipients.)"
REFERENCE
"[IEEE 802.3 Mgt], 30.4.1.3.1, nRepeaterHealth
notification."
::= { snmpDot3RptrMgt 0 4 }
rptrInfoResetEvent NOTIFICATION-TYPE
OBJECTS { rptrInfoOperStatus }
STATUS current
DESCRIPTION
"In a system containing multiple managed
repeaters, the rptrInfoResetEvent notification
conveys information related to the operational
status of a repeater. This notification is sent
on completion of a repeater reset action. A
repeater reset action is defined as a transition
to the START state of Fig 9-2 in section 9 of
[IEEE 802.3 Std], when triggered by a management
command (e.g., an SNMP Set on the rptrInfoReset
object).
The agent must throttle the generation of
consecutive rptrInfoResetEvent notifications for
a single repeater so that there is at least
a five-second gap between notifications of
this type. When notifications are throttled,
they are dropped, not queued for sending at
a future time. (Note that 'generating' a
notification means sending to all configured
recipients.)
The rptrInfoResetEvent is not sent when the
agent restarts and sends an SNMP coldStart or
warmStart trap. However, it is recommended that
a repeater agent send the rptrInfoOperStatus
object as an optional object with its coldStart
and warmStart trap PDUs."
REFERENCE
"[IEEE 802.3 Mgt], 30.4.1.3.2, nRepeaterReset
notification."
::= { snmpDot3RptrMgt 0 5 }
-- Conformance information
snmpRptrModConf
OBJECT IDENTIFIER ::= { snmpRptrMod 1 }
snmpRptrModCompls
OBJECT IDENTIFIER ::= { snmpRptrModConf 1 }
snmpRptrModObjGrps
OBJECT IDENTIFIER ::= { snmpRptrModConf 2 }
snmpRptrModNotGrps
OBJECT IDENTIFIER ::= { snmpRptrModConf 3 }
-- Object groups
snmpRptrGrpBasic1516 OBJECT-GROUP
OBJECTS { rptrGroupCapacity,
rptrOperStatus,
rptrHealthText,
rptrReset,
rptrNonDisruptTest,
rptrTotalPartitionedPorts,
rptrGroupIndex,
rptrGroupDescr,
rptrGroupObjectID,
rptrGroupOperStatus,
rptrGroupLastOperStatusChange,
rptrGroupPortCapacity,
rptrPortGroupIndex,
rptrPortIndex,
rptrPortAdminStatus,
rptrPortAutoPartitionState,
rptrPortOperStatus }
STATUS deprecated
DESCRIPTION
"********* THIS GROUP IS DEPRECATED **********
Basic group from RFCs 1368 and 1516.
NOTE: this object group is DEPRECATED and replaced
with snmpRptrGrpBasic."
::= { snmpRptrModObjGrps 1 }
snmpRptrGrpMonitor1516 OBJECT-GROUP
OBJECTS { rptrMonitorTransmitCollisions,
rptrMonitorGroupIndex,
rptrMonitorGroupTotalFrames,
rptrMonitorGroupTotalOctets,
rptrMonitorGroupTotalErrors,
rptrMonitorPortGroupIndex,
rptrMonitorPortIndex,
rptrMonitorPortReadableFrames,
rptrMonitorPortReadableOctets,
rptrMonitorPortFCSErrors,
rptrMonitorPortAlignmentErrors,
rptrMonitorPortFrameTooLongs,
rptrMonitorPortShortEvents,
rptrMonitorPortRunts,
rptrMonitorPortCollisions,
rptrMonitorPortLateEvents,
rptrMonitorPortVeryLongEvents,
rptrMonitorPortDataRateMismatches,
rptrMonitorPortAutoPartitions,
rptrMonitorPortTotalErrors }
STATUS deprecated
DESCRIPTION
"********* THIS GROUP IS DEPRECATED **********
Monitor group from RFCs 1368 and 1516.
NOTE: this object group is DEPRECATED and replaced
with snmpRptrGrpMonitor."
::= { snmpRptrModObjGrps 2 }
snmpRptrGrpAddrTrack1368 OBJECT-GROUP
OBJECTS { rptrAddrTrackGroupIndex,
rptrAddrTrackPortIndex,
rptrAddrTrackLastSourceAddress,
rptrAddrTrackSourceAddrChanges }
STATUS obsolete
DESCRIPTION
"Address tracking group from RFC 1368.
NOTE: this object group is OBSOLETE and replaced
with snmpRptrGrpAddrTrack1516."
::= { snmpRptrModObjGrps 3 }
snmpRptrGrpAddrTrack1516 OBJECT-GROUP
OBJECTS { rptrAddrTrackGroupIndex,
rptrAddrTrackPortIndex,
rptrAddrTrackLastSourceAddress,
rptrAddrTrackSourceAddrChanges,
rptrAddrTrackNewLastSrcAddress }
STATUS deprecated
DESCRIPTION
"********* THIS GROUP IS DEPRECATED **********
Address tracking group from RFC 1516.
NOTE: this object group is DEPRECATED and
replaced with snmpRptrGrpAddrTrack."
::= { snmpRptrModObjGrps 4 }
snmpRptrGrpBasic OBJECT-GROUP
OBJECTS { rptrGroupIndex,
rptrGroupObjectID,
rptrGroupOperStatus,
rptrGroupPortCapacity,
rptrPortGroupIndex,
rptrPortIndex,
rptrPortAdminStatus,
rptrPortAutoPartitionState,
rptrPortOperStatus,
rptrPortRptrId,
rptrInfoId,
rptrInfoRptrType,
rptrInfoOperStatus,
rptrInfoReset,
rptrInfoPartitionedPorts,
rptrInfoLastChange }
STATUS current
DESCRIPTION
"Basic group for a system with one or more
repeater-units in multi-segment (post-RFC 1516)
version of the MIB module."
::= { snmpRptrModObjGrps 5 }
snmpRptrGrpMonitor OBJECT-GROUP
OBJECTS { rptrMonitorPortGroupIndex,
rptrMonitorPortIndex,
rptrMonitorPortReadableFrames,
rptrMonitorPortReadableOctets,
rptrMonitorPortFCSErrors,
rptrMonitorPortAlignmentErrors,
rptrMonitorPortFrameTooLongs,
rptrMonitorPortShortEvents,
rptrMonitorPortRunts,
rptrMonitorPortCollisions,
rptrMonitorPortLateEvents,
rptrMonitorPortVeryLongEvents,
rptrMonitorPortDataRateMismatches,
rptrMonitorPortAutoPartitions,
rptrMonitorPortTotalErrors,
rptrMonitorPortLastChange,
rptrMonTxCollisions,
rptrMonTotalFrames,
rptrMonTotalErrors,
rptrMonTotalOctets }
STATUS current
DESCRIPTION
"Monitor group for a system with one or more
repeater-units in multi-segment (post-RFC 1516)
version of the MIB module."
::= { snmpRptrModObjGrps 6 }
snmpRptrGrpMonitor100 OBJECT-GROUP
OBJECTS { rptrMonitorPortIsolates,
rptrMonitorPortSymbolErrors,
rptrMonitorPortUpper32Octets,
rptrMonUpper32TotalOctets }
STATUS current
DESCRIPTION
"Monitor group for 100Mb/s ports and repeaters
in a system with one or more repeater-units in
multi-segment (post-RFC 1516) version of the MIB
module. Systems which support Counter64 should
also implement snmpRptrGrpMonitor100w64."
::= { snmpRptrModObjGrps 7 }
snmpRptrGrpMonitor100w64 OBJECT-GROUP
OBJECTS { rptrMonitorPortHCReadableOctets,
rptrMonHCTotalOctets }
STATUS current
DESCRIPTION
"Monitor group for 100Mb/s ports and repeaters in a
system with one or more repeater-units and support
for Counter64."
::= { snmpRptrModObjGrps 8 }
snmpRptrGrpAddrTrack OBJECT-GROUP
OBJECTS { rptrAddrTrackGroupIndex,
rptrAddrTrackPortIndex,
rptrAddrTrackSourceAddrChanges,
rptrAddrTrackNewLastSrcAddress,
rptrAddrTrackCapacity }
STATUS current
DESCRIPTION
"Passive address tracking group for post-RFC 1516
version of the MIB module."
::= { snmpRptrModObjGrps 9 }
snmpRptrGrpExtAddrTrack OBJECT-GROUP
OBJECTS { rptrExtAddrTrackMacIndex,
rptrExtAddrTrackSourceAddress }
STATUS current
DESCRIPTION
"Extended passive address tracking group for
a system with one or more repeater-units in
post-RFC 1516 version of the MIB module."
::= { snmpRptrModObjGrps 10 }
snmpRptrGrpRptrAddrSearch OBJECT-GROUP
OBJECTS { rptrAddrSearchLock,
rptrAddrSearchStatus,
rptrAddrSearchAddress,
rptrAddrSearchState,
rptrAddrSearchGroup,
rptrAddrSearchPort,
rptrAddrSearchOwner }
STATUS current
DESCRIPTION
"Active MAC address search group and topology
mapping support for repeaters."
::= { snmpRptrModObjGrps 11 }
snmpRptrGrpTopNPort OBJECT-GROUP
OBJECTS { rptrTopNPortControlIndex,
rptrTopNPortRepeaterId,
rptrTopNPortRateBase,
rptrTopNPortTimeRemaining,
rptrTopNPortDuration,
rptrTopNPortRequestedSize,
rptrTopNPortGrantedSize,
rptrTopNPortStartTime,
rptrTopNPortOwner,
rptrTopNPortRowStatus,
rptrTopNPortIndex,
rptrTopNPortGroupIndex,
rptrTopNPortPortIndex,
rptrTopNPortRate }
STATUS current
DESCRIPTION
"Top `N' group for repeater ports."
::= { snmpRptrModObjGrps 12 }
-- Compliances
snmpRptrModComplRFC1368 MODULE-COMPLIANCE
STATUS obsolete
DESCRIPTION
"Compliance for RFC 1368.
NOTE: this module compliance is OBSOLETE and
replaced by snmpRptrModComplRFC1516."
MODULE -- this module
MANDATORY-GROUPS { snmpRptrGrpBasic1516 }
GROUP snmpRptrGrpMonitor1516
DESCRIPTION
"Implementation of this optional group is
recommended for systems which have the
instrumentation to do performance monitoring."
GROUP snmpRptrGrpAddrTrack1368
DESCRIPTION
"Implementation of this group is
recommended for systems which have
the necessary instrumentation."
::= { snmpRptrModCompls 1 }
snmpRptrModComplRFC1516 MODULE-COMPLIANCE
STATUS deprecated
DESCRIPTION
"********* THIS COMPLIANCE IS DEPRECATED **********
Compliance for RFC 1516 and for backwards compatibility with single-repeater, 10Mb/s-only implementations."
MODULE -- this module
MANDATORY-GROUPS { snmpRptrGrpBasic1516 }
GROUP snmpRptrGrpMonitor1516
DESCRIPTION
"Implementation of this optional group is
recommended for systems which have the
instrumentation to do performance monitoring."
GROUP snmpRptrGrpAddrTrack1516
DESCRIPTION
"Implementation of this group is
recommended for systems which have
the necessary instrumentation."
::= { snmpRptrModCompls 2 }
snmpRptrModCompl MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"Compliance for the multi-segment version of the
MIB module for a system with one or more
repeater-units."
MODULE -- this module
MANDATORY-GROUPS { snmpRptrGrpBasic,
snmpRptrGrpMonitor,
snmpRptrGrpAddrTrack }
GROUP snmpRptrGrpMonitor100
DESCRIPTION
"Implementation of this group is
mandatory for managed systems which
contain 100Mb/s repeaters."
GROUP snmpRptrGrpMonitor100w64
DESCRIPTION
"Implementation of this group is
mandatory for managed systems which
contain 100Mb/s repeaters and which
can support Counter64."
GROUP snmpRptrGrpExtAddrTrack
DESCRIPTION
"Implementation of this group is
recommended for systems which have
the necessary instrumentation to track
MAC addresses of multiple DTEs attached
to a single repeater port."
GROUP snmpRptrGrpRptrAddrSearch
DESCRIPTION
"Implementation of this group is
recommended for systems which allow
read-write access and which have
the necessary instrumentation to
search all incoming data streams
for a particular MAC address."
GROUP snmpRptrGrpTopNPort
DESCRIPTION
"Implementation of this group is
recommended for systems which have
the necessary resources to support
TopN statistics reporting."
::= { snmpRptrModCompls 3 }
END
Topology Mapping
The network mapping algorithm presented below takes information available from network devices such as repeaters, bridges, and switches, and creates a representation of the physical topology of the network.
Networking devices connect to the network via one or more ports. Through these ports, the device is capable of hearing network packets sent by other devices. By looking the source address in the packet, and identifying which port the packet was heard on, the device can provide information to a Network Management System about the location of an address in the network, relative to that device. For devices such as bridges and switches, the association of address to port can be retrieved via the forwarding data base part of the Bridge MIB. For repeaters, the rptrAddrSearchTable may be used to perform the association.
Given this information, it would be possible for the NMS to create a topology of the network which represents the physical relationships of the devices in the networks. The following is an example of how this might be done:
Assume the network:
=============================
| | |
| | |
d1 d4 d7
/ \ |
/ \ |
d2 d3 d5
|
|
d6
The discovery process would first determine the existence of the network devices and nodes in the network. In the above example, the network devices discovered would be:
d1,d2,d3,d4,d5,d6,d7
From this list of discovered devices, select (arbitrarily or via some heuristic) a device as the starting point. From that device, determine where all other devices are located in the network with respect to the selected device.
For example, if d1 is the selected device, the network in relation to d1 would look like:
d1
/ | \
/ | \
d2 d3 d4,d5,d6,d7
So d1 sees d2 on one port, d3 on another port, and d4, d5, and d6 on the third port. In other words, using the rptrAddrSearchTable (if d1 is a repeater) or the Forwarding Database (if it is a bridge or a switch), d1 has located d2 on one port, d1 has located d3 on another port, and finally, d1 has located d4, d5, d6, and d7 on yet another port.
After the first step of the algorithm is accomplished, the next and final step is a recursive one. Go to each of these temporary 'segments' (e.g., the segment connecting d1 and d2, or the segment connecting d1 and d3, or the segment connecting d1, d4, d5, d6, and d7) and determine which of these devices really belongs in that segment.
As new segments are created due to this process, the recursive algorithm visits them, and performs the exact same process.
In the example, the segments connecting d1 and d2, and connecting d1 and d3, require no further scrutiny, since there are only two nodes in those segments. However, the segment connecting d1, d4, d5, d6, and d7 may prove to be one or more segments, so we will investigate it.
The purpose of this step is to determine which devices are really connected to this segment, and which are actually connected downstream. This is done by giving each of the child devices in the segment (d4, d5, d6, and d7) a chance to eliminate each of the others from the segment.
A device eliminates another device by showing that it hears the parent device (in this case, d1) on one port, and the other device on another port (different from the port on which it heard the parent). If this is true, then it must mean that that device is _between_ the parent device and the device which is being eliminated.
In the example, we can see that device d4 can eliminate both d5 and d6, , but nobody can eliminate d4 and d7, because everybody hears them on the same port that they hear the parent device (d1). So the resulting topology looks like:
d1
/ | \
/ | \
d2 d3 d4,d7
|
|
d5,d6
Next the algorithm visits the next segment, which is the one connecting d4, d5, and d6. Using the process stated above, d5 can eliminate d6, since it hears d4 on a different port from where it hears d6. Finally, the topology looks like:
d1
/ | \
/ | \
d2 d3 d4,d7
|
|
d5
|
|
d6
This is actually the topology shown at the beginning of the description.
With this information about how the network devices are connected, it is a relatively simple extension to then place nodes such as workstations and PCs in the network. This can be done by placing the node into a segment, then allowing the network devices to show that the node is really not part of that segment.
This elimination can be done because the devices know what port connects them to the segment on which the node is temporarily placed. If they actually hear the node on a different port than that which connects the device to the segment, then the node must be downstream, and so it is moved onto the downstream segment. Then that segment is evaluated, and so forth. Eventually, no device can show that the node is connected downstream, and so it must be attached to that segment.
For example, assume the network:
=============================
| | |
| | |
d1 d4 d7
/ \ |
/ \ |
d2 d3 d5
| |
| |
e1 d6
In this network, we are trying to place e1 where it belongs. We begin by placing it arbitrarily into a segment:
==================================
| | | |
| | | |
e1 d1 d4 d7
/ \ |
/ \ |
d2 d3 d5
|
|
d6
In the above case, we would give d1, d4, and d7 a chance to show that e1 is not really on that segment. d4 and d7 hear e1 on the same port which connects them to that segment, so they cannot eliminate e1 from the segment. However, d1 will hear e1 on a different port, so we move e1 down onto the segment which is connected by that port. This yields the following:
=============================
| | |
| | |
d1 d4 d7
/ \ |
/ \ |
d2 d3,e1 d5
|
|
d6
Now we give everyone in that segment (besides that parent device, d1) a chance to eliminate e1. Only d3 can try, and it succeeds, so we place e1 on segment which is connected by the port on which d3 heard e1. There is no segment there (yet), so we create one, and end up with the following:
=============================
| | |
| | |
d1 d4 d7
/ \ |
/ \ |
d2 d3 d5
| |
| |
e1 d6
which is the correct position.
Acknowledgements
This document was produced by the IETF Hub MIB Working Group, whose efforts were greatly advanced by the contributions of the following people:
Chuck Black
John Flick
Jeff Johnson
Leon Leong
Mike Lui
Dave Perkins
Geoff Thompson
Maurice Turcotte
Paul Woodruff
References
[1] IEEE 802.3/ISO 8802-3 Information processing systems -
Local area networks - Part 3: Carrier sense multiple
access with collision detection (CSMA/CD) access method
and physical layer specifications, 1993.
[2] IEEE 802.3u-1995, "MAC Parameters, Physical Layer, Medium
Attachment Units and Repeater for 100 Mb/s Operation,
Type 100BASE-T," Sections 21 through 29, Supplement to
IEEE Std 802.3, October 26, 1995.
[3] IEEE 802.3u-1995, "10 & 100 Mb/s Management," Section 30,
Supplement to IEEE Std 802.3, October 26, 1995.
[4] de Graaf, K., D. Romascanu, D. McMaster, K. McCloghrie,
and S. Roberts, "Definitions of Managed Objects for IEEE
802.3 Medium Attachment Units (MAUs)", Work in Progress.
[5] McCloghrie, K., and M. Rose, Editors, "Management
Information Base for Network Management of TCP/IP-based
internets: MIB-II", STD 17, RFC 1213, Hughes LAN Systems,
Performance Systems International, March 1991.
[6] SNMPv2 Working Group, J. Case, K. McCloghrie, M. Rose,
and S. Waldbusser, "Structure of Management Information
for version 2 of the Simple Network Management Protocol
(SNMPv2)", RFC 1902, January 1996.
[7] SNMPv2 Working Group, J. Case, K. McCloghrie, M. Rose,
and S. Waldbusser, "Textual Conventions for version 2 of
the Simple Network Management Protocol (SNMPv2)", RFC
1903, January 1996.
[8] SNMPv2 Working Group, J. Case, K. McCloghrie, M. Rose,
and S. Waldbusser, "Conformance Statements for version 2
of the Simple Network Management Protocol (SNMPv2)", RFC
1904, January 1996.
[9] SNMPv2 Working Group, J. Case, K. McCloghrie, M. Rose,
and S. Waldbusser, "Protocol Operations for version 2 of
the Simple Network Management Protocol (SNMPv2)", RFC
1905, January 1996.
[10] Case, J., M. Fedor, M. Schoffstall, and J. Davin, "Simple
Network Management Protocol", STD 15, RFC 1157, SNMP Research, Performance Systems International, MIT Laboratory for Computer Science, May 1990.
[11] McMaster, D., and K. McCloghrie, "Definitions of Managed
Objects for IEEE 802.3 Repeater Devices", RFC 1516, September 1993.
[12] McAnally, G., D. Gilbert, and J. Flick, "Conditional
Grant of Rights to Specific Hewlett-Packard Patents In
Conjunction With the Internet Engineering Task Force's
Internet-Standard Network Management Framework", RFC 1988,
August 1996.
[13] Hewlett-Packard Company, US Patents 5,293,635 and
5,421,024.
[14] McCloghrie, K., and F. Kastenholz, "Evolution of the
Interfaces Group of MIB-II", RFC 1573, January 1994.
Security Considerations
Security issues are not discussed in this memo.
Authors' Addresses
Kathryn de Graaf 3Com Corporation 118 Turnpike Rd. Southborough, MA 01772 USA
Phone: (508)229-1627 Fax: (508)490-5882 EMail: [email protected]
Dan Romascanu Madge Networks (Israel) Ltd. Atidim Technology Park, Bldg. 3 Tel Aviv 61131, Israel
Phone: 972-3-6458414, 6458458 Fax: 972-3-6487146 EMail: [email protected]
Donna McMaster Cisco Systems Inc. 170 West Tasman Drive San Jose, CA 95134
Phone: (408) 526-5260 EMail: [email protected]
Keith McCloghrie Cisco Systems Inc. 170 West Tasman Drive San Jose, CA 95134
Phone: (408) 526-5260 EMail: [email protected]
