CISCO-IETF-FRR-MIB

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Organization: Cisco Systems, Inc.

Last Updated: 2008-04-29

Category: Cisco Devices, MPLS and Traffic Engineering

Description: Manages MPLS Fast Reroute (FRR) tunnels and bypass paths for rapid traffic protection in MPLS networks.

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What Is CISCO-IETF-FRR-MIB?

CISCO-IETF-FRR-MIB is Cisco's implementation of an IETF MPLS Fast Reroute (FRR) MIB, based on the IETF draft 'Fast Reroute Techniques in RSVP-TE' (draft-ietf-mpls-rsvp-lsp-fastreroute), used to manage rapid local protection of MPLS Traffic-Engineered LSPs via pre-established bypass tunnels. Per the underlying draft its object set covers FRR-protected tunnel state, backup/bypass tunnel associations, and protection-switching status, though no specific object names were available for this entry. Functionally it is a network-protocol/software-status MIB: it is used to confirm primary LSPs have active backup protection in place and to detect when FRR has switched traffic onto a bypass path, signaling an underlying link or node failure being masked by fast reroute. It is explicitly derived from and dependent on the cited IETF MPLS FRR draft, aligning Cisco's implementation with that specification's data model. It is deployed on Cisco MPLS provider-edge and core routers using RSVP-TE with Fast Reroute for sub-50ms failure protection. Engineers can download the CISCO-IETF-FRR-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in CISCO-IETF-FRR-MIB. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.

Supported Devices

Cisco MPLS provider-edge/core router

Monitoring Examples

No specific sample objects were provided for this MIB, so a concrete object-level polling scenario cannot be described honestly; based on its description, the MIB would typically be used to confirm which LSPs have FRR backup tunnels configured and to detect when traffic has failed over onto a bypass tunnel, indicating a protected link or node has failed.

What Can Be Monitored

FRR backup/bypass tunnel association (per module scope)
LSP protection-switching status (per module scope)

Imported Objects

From CISCO-SMI

ciscoExperiment

OBJECT-IDENTITY

From IF-MIB

InterfaceIndex
InterfaceIndexOrZero

From MPLS-TC-STD-MIB

MplsBitRate
MplsLsrIdentifier
MplsTunnelAffinity
MplsTunnelIndex
MplsTunnelInstanceIndex

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Gauge32
Integer32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
TimeTicks
Unsigned32

From SNMPv2-TC

RowStatus
TEXTUAL-CONVENTION
TimeStamp
TruthValue

How to Use in IPNetwork Monitor

Example using cmplsFrrLogTableCurrEntries OID:

Select a Cisco MPLS provider-edge/core router as the target host to create a monitor — the SNMP service should be up and running on it. Click New Monitor, then check SNMP Custom on the Favorites tab, click Next, and confirm the host. On the next page, click Select... to open the built-in SNMP MIB Browser and type cmplsFrrLogTableCurrEntries into the Find box to locate it in the OID tree, then select it and click OK. Indicates the current number of entries in the FRR log table. On the monitor's Main parameters page you can set the target's SNMP port (default 161), credentials, polling interval, and other settings — see the SNMP Monitor help for details. On the State conditions and Alerting tabs, configure when the monitor should change state and trigger an alert; since this is a Counter32-type OID, Value bounds is the most useful condition here — trigger an alert if the counter increases sharply between polls relative to its normal baseline, since an unexpected spike often reflects a real change in traffic or activity. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
cmplsFrrMIB	1.3.6.1.4.1.9.10.98			This MIB module contains managed object definitions for MPLS Fast Reroute (FRR) as defined in:Pan, P., Gan, D., Swallow, G., Vasseur, J.Ph., Cooper, D., Atlas, A., Jork, M., Fast Reroute Techniques in RSVP-TE, draft-ietf-mpls-rsvp-lsp-fastreroute- 00.txt, January 2002.
cmplsFrrNotif	1.3.6.1.4.1.9.10.98.0
NTF cmplsFrrProtected	1.3.6.1.4.1.9.10.98.0.1			This notification is generated when a tunnel running over an interface as specified in the mplsFrrConstTable is initially protected by the backup tunnel also specified in the cmplsFrrConstTable. This notification should not be generated for each subsequent tunnel that is backed up by the FRR feature on this LSR, as this may result in potential scaling issues with regard to LSR performance and network loading. Note also that notifications MUST be generated in accordance with the cmplsFrrNotifMaxRate.
NTF cmplsFrrUnProtected	1.3.6.1.4.1.9.10.98.0.2			This notification is generated when the final tunnel that is being protected by a backup tunnel as specified in the cmplsFrrConstTable is restored to normal operation. This notification should not be generated for each restored tunnel, as this may result in potential scaling issues with regard to LSR performance and network loading. Note also that notifications MUST be generated in accordance with the cmplsFrrNotifMaxRate.
cmplsFrrScalars	1.3.6.1.4.1.9.10.98.1
U32 cmplsFrrDetourIncoming	1.3.6.1.4.1.9.10.98.1.1	Unsigned32	read-only	The number of detour LSPs entering the device if mplsFrrConstProtectionMethod is set to oneToOneBackup(0), or or 0 if mplsFrrConstProtectionMethod is set to facilityBackup(1).
U32 cmplsFrrDetourOutgoing	1.3.6.1.4.1.9.10.98.1.2	Unsigned32	read-only	The number of detour LSPs leaving the device if mplsFrrConstProtectionMethod is set to oneToOneBackup(0), or 0 if mplsFrrConstProtectionMethod is set to to facilityBackup(1).
U32 cmplsFrrDetourOriginating	1.3.6.1.4.1.9.10.98.1.3	Unsigned32	read-only	The number of detour LSPs originating at this PLR if mplsFrrConstProtectionMethod is set to oneToOneBackup(0). This object MUST return 0 if the mplsFrrConstProtectionMethod is set to facilityBackup(1).
U32 cmplsFrrSwitchover	1.3.6.1.4.1.9.10.98.1.4	Unsigned32	read-only	The number of tunnel instances that are switched over to their corresponding detour LSP if mplsFrrConstProtectionMethod is set to oneToOneBackup(0), or tunnels being switched over if mplsFrrConstProtectionMethod is set to facilityBackup(1).
U32 cmplsFrrNumOfConfIfs	1.3.6.1.4.1.9.10.98.1.5	Unsigned32	read-only	Indicates the number of MPLS interfaces configured for protection by the FRR feature, otherwise this value MUST return 0 to indicate that LSPs traversing any interface may be protected.
U32 cmplsFrrActProtectedIfs	1.3.6.1.4.1.9.10.98.1.6	Unsigned32	read-only	Indicates the number of interfaces currently being protected by the FRR feature if mplsFrrConstProtectionMethod is set to facilityBackup(1), otherwise this value should return 0 to indicate that LSPs traversing any interface may be protected. This value MUST be less than or equal to mplsFrrConfIfs.
U32 cmplsFrrConfProtectingTuns	1.3.6.1.4.1.9.10.98.1.7	Unsigned32	read-only	Indicates the number of bypass tunnels configured to protect facilities on this LSR using the FRR feature if mplsFrrConstProtectionMethod is set to facilityBackup(1), otherwise this value MUST return 0.
U32 cmplsFrrActProtectedTuns	1.3.6.1.4.1.9.10.98.1.8	Unsigned32	read-only	Indicates the number of bypass tunnels indicated in mplsFrrConfProtectingTuns whose operStatus is up(1) indicating that they are currently protecting facilities on this LSR using the FRR feature. This object MUST return 0 if mplsFrrConstProtectionMethod is set to facilityBackup(1).
U32 cmplsFrrActProtectedLSPs	1.3.6.1.4.1.9.10.98.1.9	Unsigned32	read-only	Indicates the number of LSPs currently protected by the FRR feature. If mplsFrrConstProtectionMethod is set to facilityBackup(1)this object MUST return 0.
INT cmplsFrrConstProtectionMethod	1.3.6.1.4.1.9.10.98.1.10	INTEGER	read-write	Indicates which protection method is to be used for fast reroute. Some devices may require a reboot of their routing processors if this variable is changed. An agent which does not wish to reboot or modify its FRR mode MUST return an inconsistentValue error. Please consult the device's agent capability statement for more details.
T/F cmplsFrrNotifsEnabled	1.3.6.1.4.1.9.10.98.1.11	TruthValue	read-write	Enables or disables FRR notifications defined in this MIB module. Notifications are disabled by default.
U32 cmplsFrrLogTableMaxEntries	1.3.6.1.4.1.9.10.98.1.12	Unsigned32	read-write	Indicates the maximum number of entries allowed in the FRR Log table. Agents receiving SETs for values that cannot be used must return an inconsistent value error. If a manager sets this value to 0, this indicates that no logging should take place by the agent. If this value is returned as 0, this indicates that no additional log entries will be added to the current table either because the table has been completely filled or logging has been disabled. However, agents may wish to not delete existing entries in the log table so that managers may review them in the future. It is implied that when mplsFrrLogTableCurrEntries has reached the value of this variable, that logging entries may not continue to be added to the table, although existing ones may remain. Furthermore, an agent may begin to delete existing (perhaps the oldest entries) entries to make room for new ones.
C32 cmplsFrrLogTableCurrEntriesEx	1.3.6.1.4.1.9.10.98.1.13	Counter32	read-only	Indicates the current number of entries in the FRR log table.
U32 cmplsFrrNotifMaxRate	1.3.6.1.4.1.9.10.98.1.14	Unsigned32	read-write	This variable indicates the number of milliseconds that must elapse between notification emissions. If events occur more rapidly, the implementation may simply fail to emit these notifications during that period, or may queue them until an appropriate time in the future. A value of 0 means no minimum elapsed period is specified.
cmplsFrrObjects	1.3.6.1.4.1.9.10.98.2
cmplsFrrGeneralObjects	1.3.6.1.4.1.9.10.98.2.1
cmplsFrrConstTable	1.3.6.1.4.1.9.10.98.2.1.1		not-accessible	This table shows detour setup constraints.
cmplsFrrConstEntry	1.3.6.1.4.1.9.10.98.2.1.1.1		not-accessible	An entry in this table represents detour LSP or bypass tunnel setup constraints for a tunnel instance to be protected by detour LSPs or a tunnel. Agents must allow entries in this table to be created only for tunnel instances that require fast-reroute. Entries indexed with mplsFrrConstIfIndex set to 0 apply to all interfaces on this device for which the FRR feature can operate on.
NUM cmplsFrrConstIfIndex	1.3.6.1.4.1.9.10.98.2.1.1.1.1	InterfaceIndexOrZero	not-accessible	Uniquely identifies an interface for which fast reroute is configured. Tabular entries indexed with a 0 value apply to all interfaces on this device for which the FRR feature can operate on.
MPL cmplsFrrConstTunnelIndex	1.3.6.1.4.1.9.10.98.2.1.1.1.2	MplsTunnelIndex	not-accessible	Uniquely identifies a tunnel for which fast reroute is requested.
MPL cmplsFrrConstTunnelInstance	1.3.6.1.4.1.9.10.98.2.1.1.1.3	MplsTunnelInstanceIndex	not-accessible	Uniquely identifies an instance of this tunnel for which fast reroute is requested.
U32 cmplsFrrConstSetupPrio	1.3.6.1.4.1.9.10.98.2.1.1.1.4	Unsigned32	read-create	Indicates the setup priority of detour LSP.
U32 cmplsFrrConstHoldingPrio	1.3.6.1.4.1.9.10.98.2.1.1.1.5	Unsigned32	read-create	Indicates the holding priority for detour LSP.
MPL cmplsFrrConstInclAnyAffinity	1.3.6.1.4.1.9.10.98.2.1.1.1.6	MplsTunnelAffinity	read-create	A link satisfies the include-any constraint if and only if the constraint is zero, or the link and the constraint have a resource class in common.
MPL cmplsFrrConstInclAllAffinity	1.3.6.1.4.1.9.10.98.2.1.1.1.7	MplsTunnelAffinity	read-create	A link satisfies the include-all constraint if and only if the link contains all of the administrative groups specified in the constraint.
MPL cmplsFrrConstExclAllAffinity	1.3.6.1.4.1.9.10.98.2.1.1.1.8	MplsTunnelAffinity	read-create	A link satisfies the exclude-all constraint if and only if the link contains none of the administrative groups specified in the constraint.
U32 cmplsFrrConstHopLimit	1.3.6.1.4.1.9.10.98.2.1.1.1.9	Unsigned32	read-create	The maximum number of hops that the detour LSP may traverse.
MPL cmplsFrrConstBandwidth	1.3.6.1.4.1.9.10.98.2.1.1.1.10	MplsBitRate	read-create	This variable represents the bandwidth for detour LSPs of this tunnel, in units of thousands of bits per second (Kbps).
ROW cmplsFrrConstRowStatus	1.3.6.1.4.1.9.10.98.2.1.1.1.11	RowStatus	read-create	This object is used to create, modify, and/or delete a row in this table.
G32 cmplsFrrConstNumProtectingTunOnIf	1.3.6.1.4.1.9.10.98.2.1.1.1.12	Gauge32	read-only	The number of backup tunnels protecting the specified interface.
G32 cmplsFrrConstNumProtectedTunOnIf	1.3.6.1.4.1.9.10.98.2.1.1.1.13	Gauge32	read-only	The number of tunnels protected on this interface.
cmplsFrrLogTable	1.3.6.1.4.1.9.10.98.2.1.2		not-accessible	The fast reroute log table records fast reroute events such as protected links going up or down or the FRR feature kicking in.
cmplsFrrLogEntry	1.3.6.1.4.1.9.10.98.2.1.2.1		not-accessible	An entry in this table is created to describe one fast reroute event. Entries in this table are only created and destroyed by the agent implementation. The maximum number of entries in this log is governed by the scalar.
U32 cmplsFrrLogIndex	1.3.6.1.4.1.9.10.98.2.1.2.1.1	Unsigned32	not-accessible	Uniquely identifies a fast reroute event entry.
TIM cmplsFrrLogEventTime	1.3.6.1.4.1.9.10.98.2.1.2.1.2	TimeStamp	read-only	This object provides the amount of time ticks since this event occured.
NUM cmplsFrrLogInterface	1.3.6.1.4.1.9.10.98.2.1.2.1.3	InterfaceIndexOrZero	read-only	This object indicates which interface was affected by this FRR event. This value may be set to 0 if mplsFrrConstProtectionMethod is set to oneToOneBackup(0).
INT cmplsFrrLogEventType	1.3.6.1.4.1.9.10.98.2.1.2.1.4	INTEGER	read-only	This object describes what type of fast reroute event occured.
TIK cmplsFrrLogEventDuration	1.3.6.1.4.1.9.10.98.2.1.2.1.5	TimeTicks	read-only	This object describes the duration of this event.
OCT cmplsFrrLogEventReasonString	1.3.6.1.4.1.9.10.98.2.1.2.1.6	OCTET STRING	read-only	This object contains an implementation-specific explanation of the event.
cmplsFrr1to1Objects	1.3.6.1.4.1.9.10.98.2.2
cmplsFrrFacObjects	1.3.6.1.4.1.9.10.98.2.3
cmplsFrrFacRouteDBTable	1.3.6.1.4.1.9.10.98.2.3.1		not-accessible	The mplsFrrFacRouteDBTable provides information about the fast reroute database. Each entry belongs to an interface, protecting backup tunnel and protected tunnel. MPLS interfaces defined on this node are protected by backup tunnels and are indexed by mplsFrrFacRouteProtectedIndex. Backup tunnels defined to protect the tunnels traversing an interface, and are indexed by mplsFrrFacRouteProtectingTunIndex. Note that the tunnel instance index is not required, since it is implied to be 0, which indicates the tunnel head interface for the protecting tunnel. The protecting tunnel is defined to exist on the PLR in the FRR specification. Protected tunnels are the LSPs that traverse the protected link. These LSPs are uniquely identified by mplsFrrFacRouteProtectedTunIndex, mplsFrrFacRouteProtectedTunInstance, mplsFrrFacRouteProtectedTunIngressLSRId, and mplsFrrFacRouteProtectedTunEgressLSRId.
cmplsFrrFacRouteDBEntry	1.3.6.1.4.1.9.10.98.2.3.1.1		not-accessible	An entry in the mplsFrrDBTable represents a single protected LSP, protected by a backup tunnel and defined for a specific protected interface. Note that for brevity, managers should consult the mplsTunnelTable present in the MPLS-TE MIB for additional information about the protecting and protected tunnels, and the ifEntry in the IF-MIB for the protected interface.
NUM cmplsFrrFacRouteProtectedIfIndex	1.3.6.1.4.1.9.10.98.2.3.1.1.1	InterfaceIndex	not-accessible	Uniquely identifies the interface configured for FRR protection.
MPL cmplsFrrFacRouteProtectingTunIndex	1.3.6.1.4.1.9.10.98.2.3.1.1.2	MplsTunnelIndex	not-accessible	Uniquely identifies the mplsTunnelEntry primary index for the tunnel head interface designated to protect the interface as specified in the mplsFrrFacRouteIfProtectedIndex (and all of the tunnels using this interface).
MPL cmplsFrrFacRouteProtectedTunIndex	1.3.6.1.4.1.9.10.98.2.3.1.1.3	MplsTunnelIndex	not-accessible	Uniquely identifies an mplsTunnelEntry that is being protected by FRR.
MPL cmplsFrrFacRouteProtectedTunInstance	1.3.6.1.4.1.9.10.98.2.3.1.1.4	MplsTunnelInstanceIndex	not-accessible	Uniquely identifies an mplsTunnelEntry that is being protected by FRR.
OID cmplsFrrFacRouteProtectedTunIngressLSRId	1.3.6.1.4.1.9.10.98.2.3.1.1.5	MplsLsrIdentifier	not-accessible	Uniquely identifies an mplsTunnelEntry that is being protected by FRR.
OID cmplsFrrFacRouteProtectedTunEgressLSRId	1.3.6.1.4.1.9.10.98.2.3.1.1.6	MplsLsrIdentifier	not-accessible	Uniquely identifies an mplsTunnelEntry that is being protected by FRR.
INT cmplsFrrFacRouteProtectedTunStatus	1.3.6.1.4.1.9.10.98.2.3.1.1.7	INTEGER	read-only	Specifies the state of the protected tunnel. active This tunnel's label has been placed in the LFIB and is ready to be applied to incoming packets. ready - This tunnel's label entry has been created but is not yet in the LFIB. partial - This tunnel's label entry as not been fully created.
MPL cmplsFrrFacRouteProtectingTunResvBw	1.3.6.1.4.1.9.10.98.2.3.1.1.8	MplsBitRate	read-only	Specifies the amount of bandwidth in megabytes per second that is actually reserved by the backup tunnel for facility backup. This value is repeated here from the MPLS- TE MIB because the tunnel entry will reveal the bandwidth reserved by the signaling protocol, which is typically 0 for backup tunnels so as to not over-book bandwidth. However, internal reservations are typically made on the PLR, thus this value should be revealed here.
INT cmplsFrrFacRouteProtectingTunProtectionType	1.3.6.1.4.1.9.10.98.2.3.1.1.9	INTEGER	read-create	Indicates type of the resource protection.
cmplsFrrConformance	1.3.6.1.4.1.9.10.98.3
cmplsFrrGroups	1.3.6.1.4.1.9.10.98.3.1
cmplsFrrScalarGroup	1.3.6.1.4.1.9.10.98.3.1.1			Objects that are required to gather fast reroute statistics.
cmplsFrrConstGroup	1.3.6.1.4.1.9.10.98.3.1.2			Objects that are required to configure fast reroute constraints at the ingress LSR of the tunnel that requires fast reroute service.
cmplsFrrLogGroup	1.3.6.1.4.1.9.10.98.3.1.4			Objects that are required to represent FRR logging information at the detour ingress, transit and egress LSRs.
cmplsFrrFacRouteDBGroup	1.3.6.1.4.1.9.10.98.3.1.6			Objects that are required to represent the FRR Facility Route Database information.
cmplsFrrNotifGroup	1.3.6.1.4.1.9.10.98.3.1.7			Objects that are required to represent FRR notifications.
cmplsFrrNotifGroupRev1	1.3.6.1.4.1.9.10.98.3.1.8			Objects that are required to represent FRR notifications.
cmplsFrrCompliances	1.3.6.1.4.1.9.10.98.3.2
cmplsFrrModuleCompliance	1.3.6.1.4.1.9.10.98.3.2.1			Compliance statements for agents that support the MPLS FRR MIB.
cmplsFrrModuleComplianceRev1	1.3.6.1.4.1.9.10.98.3.2.2			Compliance statements for agents that support the MPLS FRR MIB.

RFC description

MPLS Fast Reroute (FRR) managed objects for Cisco systems enabling rapid tunnel protection on link failure.

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Download CISCO-IETF-FRR-MIB