CISCO-IEEE8021-CFM-EXT-MIB
AI MIB Summary
The CISCO-IEEE8021-CFM-EXT-MIB extends Cisco IOS and Catalyst switch monitoring capabilities to track proprietary Connectivity Fault Management (CFM) objects, specifically exposing detailed state data for Maintenance Association End Points (MEPs), Intermediate Points (MIPs), and Linktrace operations that are not defined in the standard IEEE 802.1ag MIB. This module enables granular visibility into Ethernet service instance continuity, fault isolation, and path tracing metrics across Cisco-specific Maintenance Domains and Service Access Points.
A MIB module for extending the IEEE8021-CFM-MIB and IEEE8021-CFM-V2-MIB to add objects which provide additional information about Connectivity Fault management(CFM) not available in IEEE8021-CFM-MIB and IEEE8021-CFM-V2-MIB.
Glossary:
Connectivity Fault Management (CFM): Connectivity Fault Management comprises capabilities for detecting, verifying, and isolating connectivity failures in Virtual Bridged Local Area Networks.
Maintenance Domain (MD): The network or the part of the network for which faults in connectivity can be managed.
Service Access Point (SAP): The point at which a service is offered.
Domain Service Access Point (DoSAP): A member of a set of SAPs at which a Maintenance Domain is capable of offering connectivity to systems outside the Maintenance Domain.
Intermediate Service Access Points (ISAP): A SAP, interior to a Maintenance Domain, through which frames can pass in transit from DoSAP to DoSAP.
Maintenance association End Point (MEP): An actively managed CFM entity, associated with a specific domain service access point of a service instance, which can generate and receive CFM PDUs and track any responses.
Maintenance Association (MA): A set of MEPs, each configured with the same MAID and MD Level, established to verify the integrity of a single service instance.
Maintenance domain Intermediate Point (MIP): A CFM entity consisting of two MHFs. A MHF is a CFM entity, associated with a single Maintenance Domain, and thus with a single MD Level and a set of VIDs, that cannot generate CFM PDUs, but only in response to received CFM PDUs.
Continuity Check Message (CCM): A multicast CFM PDU transmitted periodically by a MEP in order to ensure continuity over the MA to which the transmitting MEP belongs. No reply is sent by any MP in response to receiving a CCM.
Continuity Check Initiator (CCI): A state machine. Once it starts, CCMs will be generated.
Linktrace Message (LTM): A CFM PDU initiated by a MEP to trace a path to a target MAC address, forwarded from MIP to MIP, up to the point at which the LTM reaches its target, a MEP, or can no longer be forwarded.
Linktrace Reply (LTR): A unicast CFM PDU sent by an MP to a MEP, in response to receiving an LTM from that MEP.
Content Addressable memory (CAM): The CAM table is consulted to make the frame forwarding decision. On Ethernet networks that transmit IP, switches learn MAC addresses from the source address of ethernet frames on the interfaces.
Main OID:
ciscoIeee8021CfmExtMIB.1.3.6.1.4.1.9.9.679
40
Objects
Active
Status
7
Dependencies
Imported Objects
Objects
40 total| Object Name |
|---|
ciscoIeee8021CfmExtMIBA MIB module for extending the IEEE8021-CFM-MIB
and IEEE8021-CFM-V2-MIB to add objects which provide
additional information about Connectivity Fault
management(CFM) not available in IEEE8021-CFM-MIB and
IEEE8021-CFM-V2-MIB.
Glossary:
Connectivity Fault Management (CFM):
Connectivity Fault Management comprises capabilities for
detecting, verifying, and isolating connectivity failures
in Virtual Bridged Local Area Networks.
Maintenance Domain (MD):
The network or the part of the network for which
faults in connectivity can be managed.
Service Access Point (SAP): The point at which a service is
offered.
Domain Service Access Point (DoSAP): A member of a set of SAPs
at which a Maintenance Domain is capable of offering
connectivity to systems outside the Maintenance Domain.
Intermediate Service Access Points (ISAP): A SAP, interior
to a Maintenance Domain, through which frames can pass
in transit from DoSAP to DoSAP.
Maintenance association End Point (MEP):
An actively managed CFM entity, associated with a
specific domain service access point of a service
instance, which can generate and receive CFM PDUs and
track any responses.
Maintenance Association (MA):
A set of MEPs, each configured with the same MAID and
MD Level, established to verify the integrity of a
single service instance.
Maintenance domain Intermediate Point (MIP):
A CFM entity consisting of two MHFs. A MHF is a CFM entity,
associated with a single Maintenance Domain, and thus
with a single MD Level and a set of VIDs, that cannot
generate CFM PDUs, but only in response to received
CFM PDUs.
Continuity Check Message (CCM):
A multicast CFM PDU transmitted periodically by a MEP in
order to ensure continuity over the MA to which the
transmitting MEP belongs. No reply is sent by any MP
in response to receiving a CCM.
Continuity Check Initiator (CCI):
A state machine. Once it starts, CCMs will be generated.
Linktrace Message (LTM):
A CFM PDU initiated by a MEP to trace a path to a
target MAC address, forwarded from MIP to MIP, up to the
point at which the LTM reaches its target, a MEP, or can
no longer be forwarded.
Linktrace Reply (LTR): A unicast CFM PDU sent by an MP to a
MEP, in response to receiving an LTM from that MEP.
Content Addressable memory (CAM): The CAM table is consulted
to make the frame forwarding decision. On Ethernet networks
that transmit IP, switches learn MAC addresses from the
source address of ethernet frames on the interfaces. MODULE-IDENTITY .1.3.6.1.4.1.9.9.679 |
cIeeeCfmExtMIBNotifs OBJECT IDENTIFIER .1.3.6.1.4.1.9.9.679.0 |
cIeeeCfmExtMIBObjects OBJECT IDENTIFIER .1.3.6.1.4.1.9.9.679.1 |
ciceCfmGlobal OBJECT IDENTIFIER .1.3.6.1.4.1.9.9.679.1.1 |
ciceCfmEnableThis object enables or disables the CFM feature
of the local device. When the object is 'true',
CFM feature is enabled. When the object is 'false',
CFM feature is disabled.rw TruthValue (SNMPv2-TC) .1.3.6.1.4.1.9.9.679.1.1.1 |
ciceCfmMaxMdLevelThis object indicates the maximum MD level that has been
configured through dot1agCfmMdMdLevel of IEEE8021-CFM-MIB
in the system.ro Unsigned32 .1.3.6.1.4.1.9.9.679.1.1.2 |
ciceCfmBrainAddressThis object indicates the brain MAC address of
the bridge. The brain MAC address is used by
unicast CFM messages.ro MacAddress (SNMPv2-TC) .1.3.6.1.4.1.9.9.679.1.1.3 |
ciceCfmCcMulticastAddressThis object indicates the CFM Continuity Check multicast
Mac Address.ro MacAddress (SNMPv2-TC) .1.3.6.1.4.1.9.9.679.1.1.4 |
ciceCfmLtmMulticastAddressThis object indicates the CFM LTM multicast
Mac Address.ro MacAddress (SNMPv2-TC) .1.3.6.1.4.1.9.9.679.1.1.5 |
ciceCfmEnableFaultAlarmThis variable indicates whether the system
produces the dot1agCfmFaultAlarm defined in
IEEE8021-CFM-MIB.
A value of 'false' prevents dot1agCfmFaultAlarm
from being generated.rw TruthValue (SNMPv2-TC) .1.3.6.1.4.1.9.9.679.1.1.6 |
ciceCfmLtr OBJECT IDENTIFIER .1.3.6.1.4.1.9.9.679.1.2 |
ciceCfmLtrEnableThis object specifies whether caching CFM LTRs
in dot1agCfmLtrTable of IEEE8021-CFM-MIB is enabled.
The Linktrace replies will be cached in dot1agCfmLtrTable
only if this object has the value of 'true'.rw TruthValue (SNMPv2-TC) .1.3.6.1.4.1.9.9.679.1.2.1 |
ciceCfmLtrHoldTimeThis object is the cache time for retaining an entry in
dot1agCfmLtrTable of IEEE8021-CFM-MIB.rw Unsigned32 .1.3.6.1.4.1.9.9.679.1.2.2 |
ciceCfmLtrSizeThis object is the cache size of LTRs in
dot1agCfmLtrTable of IEEE8021-CFM-MIB.
A value of zero for this object indicates that there
is no limitation on the cache size.rw Unsigned32 .1.3.6.1.4.1.9.9.679.1.2.3 |
ciceCfmMa OBJECT IDENTIFIER .1.3.6.1.4.1.9.9.679.1.3 |
ciceCfmMaNetTableThis table contains a list of Maintenance Association. SEQUENCE OF CiceCfmMaNetEntry .1.3.6.1.4.1.9.9.679.1.3.1 |
ciceCfmMaNetEntryAn entry containing Continuity Check configuration for
a particular MA. CiceCfmMaNetEntry .1.3.6.1.4.1.9.9.679.1.3.1.1 |
ciceCfmMaNetCciEnableThis object specifies whether Continuity Check
Initiator is enabled.
A value of 'true' indicates that the Continuity
Check Initiator state machine will start and all
MEPs in this MA will generate Continuity Check
Messages (CCMs).rw TruthValue (SNMPv2-TC) .1.3.6.1.4.1.9.9.679.1.3.1.1.1 |
ciceCfmMaNetCciDirectionThis object specifies the direction in which the
Maintenance association faces on the bridge port.rw Dot1agCfmMpDirection .1.3.6.1.4.1.9.9.679.1.3.1.1.2 |
ciceCfmMaNetLossThresholdThis object specifies the number of CCMs that
is allowed to be lost before cleaning up the
corresponding entry in CC database.rw Unsigned32 .1.3.6.1.4.1.9.9.679.1.3.1.1.3 |
ciceCfmIfObjects OBJECT IDENTIFIER .1.3.6.1.4.1.9.9.679.1.4 |
ciceCfmInterfaceTableThis table contains a list of CFM capable ports. SEQUENCE OF CiceCfmInterfaceEntry .1.3.6.1.4.1.9.9.679.1.4.1 |
ciceCfmInterfaceEntryAn entry containing information about the CFM state
on a particular CFM capable port. CiceCfmInterfaceEntry .1.3.6.1.4.1.9.9.679.1.4.1.1 |
ciceCfmIfIndexThe port number associated with this CFM port.
This is a unique index for an entry in the
ciceCfmInterfaceTable. A non-zero index for an
entry indicates the ifIndex for the corresponding
CFM capable interface entry in the ifTable.
Note that this table does not necessarily correspond
one-to-one with all entries in the Interface MIB;
rather, only those which are enabled for CFM
functionality. InterfaceIndex (IF-MIB) .1.3.6.1.4.1.9.9.679.1.4.1.1.1 |
ciceCfmIfStateThe administrative CFM state of the port.
enable - enables CFM on the port.
disable - disables CFM on the port.
transparent - forward CFM frames like regular
data traffic.rw Enumeration .1.3.6.1.4.1.9.9.679.1.4.1.1.2 |
ciceCfmMipTableThis table contains a list of Maintenance domain
Intermediate Points.
This table manages MIPs which are created by rules
specified on the Maintenance Association (MA) and
Maintenance Domain (MD) on the local device. MIPs can
also be created by rules specified on Default MD Level,
which is covered by dot1agCfmDefaultMdTable in
IEEE8021-CFM-MIB. SEQUENCE OF CiceCfmMipEntry .1.3.6.1.4.1.9.9.679.1.4.2 |
ciceCfmMipEntryAn entry containing configuration of a particular MIP.
Each row in the table represents a different MIP.
In order to facilitate the diagnosis of connectivity
failures, an administrator can make a DoSAP visible
as an ISAP to the immediately enclosing Maintenance
Domain by configuring it as a MIP. In the lowest
Maintenance Domains, the MIPs can be configured on
individual Bridge Ports. CiceCfmMipEntry .1.3.6.1.4.1.9.9.679.1.4.2.1 |
ciceCfmMipVlanIndexThe VLAN-ID with which the MIP is associated on
the interface. VlanId (Q-BRIDGE-MIB) .1.3.6.1.4.1.9.9.679.1.4.2.1.1 |
ciceCfmMipMdLevelThe MD level of the MIP.rw Unsigned32 .1.3.6.1.4.1.9.9.679.1.4.2.1.2 |
ciceCfmMipStorageTypeThe storage type for this conceptual row.rw StorageType (SNMPv2-TC) .1.3.6.1.4.1.9.9.679.1.4.2.1.3 |
ciceCfmMipRowStatusThe status of the row.
The writable columns in a row can not be changed if the row
is active. All columns must have a valid value before a row
can be activated.rw RowStatus (SNMPv2-TC) .1.3.6.1.4.1.9.9.679.1.4.2.1.4 |
ciceCfmMacEnableIfTableThis table contains a list of VLANs on CFM interfaces.
Each row in the table represents a MAC enable
configuration on an interface associated with
a VLAN. Creating one row installs a system CAM
entry. Linktrace replies and Loopback messages
and replies could be seen from the interface for
which the Mac address was learnt via the system CAM
table for Down MEPs. SEQUENCE OF CiceCfmMacEnableIfEntry .1.3.6.1.4.1.9.9.679.1.4.3 |
ciceCfmMacEnableIfEntryAn entry containing MAC enable configuration
of a particular VLAN on an interface. CiceCfmMacEnableIfEntry .1.3.6.1.4.1.9.9.679.1.4.3.1 |
ciceCfmMacEnableVlanIndexThe VLAN-ID with which the MAC enable attribute
is associated on the interface. VlanId (Q-BRIDGE-MIB) .1.3.6.1.4.1.9.9.679.1.4.3.1.1 |
ciceCfmMacEnableStorageTypeThe storage type for this conceptual row.rw StorageType (SNMPv2-TC) .1.3.6.1.4.1.9.9.679.1.4.3.1.2 |
ciceCfmMacEnableRowStatusThe status of the row.
The writable columns in a row can not be changed if the row
is active. All columns must have a valid value before a row
can be activated.rw RowStatus (SNMPv2-TC) .1.3.6.1.4.1.9.9.679.1.4.3.1.3 |
ciceCfmMep OBJECT IDENTIFIER .1.3.6.1.4.1.9.9.679.1.5 |
cIeeeCfmExtMIBConformance OBJECT IDENTIFIER .1.3.6.1.4.1.9.9.679.2 |
ciceCfmMIBCompliances OBJECT IDENTIFIER .1.3.6.1.4.1.9.9.679.2.1 |
ciceCfmMIBGroups OBJECT IDENTIFIER .1.3.6.1.4.1.9.9.679.2.2 |