CISCO-ROUTE-POLICIES-MIB

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Organization: Cisco Systems, Inc.

Last Updated: 2006-08-18

Category: Cisco Devices, IP and Core Protocols, Routing Protocols

Description: Manages route policy definitions and their application to routing protocol updates on Cisco routing platforms.

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What Is CISCO-ROUTE-POLICIES-MIB?

CISCO-ROUTE-POLICIES-MIB is a Cisco enterprise MIB that does not define runtime data objects itself, but instead reserves an OID subtree used to enumerate named routing 'policies' referenced by other standard and Cisco MIBs, such as inetCidrRoutePolicy in IP-FORWARD-MIB (RFC 4292) and mplsL3VpnVrfRteInetCidrPolicy in MPLS-L3VPN-STD-MIB (RFC 4382). It belongs to the Cisco routing/MPLS MIB family and provides only OBJECT IDENTIFIER definitions, no tables or scalars of its own. It therefore has no direct monitoring role for hardware or software status; its purpose is purely to give consistent, well-known OID values that other route-policy-aware MIBs can point to when reporting which policy governs a route. It has an explicit dependency on IP-FORWARD-MIB and MPLS-L3VPN-STD-MIB, the standards MIBs that actually consume its OID space. It is used across Cisco routers and MPLS-capable platforms wherever route-policy identifiers need to be expressed via SNMP, with the CISCO-ROUTE-POLICIES-MIB MIB itself supplying the well-known OID values referenced in those cases.

IPNetwork Monitor allows you to monitor SNMP objects defined in CISCO-ROUTE-POLICIES-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 router
Cisco MPLS-capable router

Monitoring Examples

This MIB defines only an OBJECT IDENTIFIER subtree (under ciscoRoutePoliciesMIBObjects) with no tables or scalars to poll; it is referenced by policy-identifying objects like inetCidrRoutePolicy in IP-FORWARD-MIB rather than being monitored directly itself.

Imported Objects

From CISCO-SMI

ciscoMgmt

OBJECT-IDENTITY

From SNMPv2-SMI

MODULE-IDENTITY
OBJECT-IDENTITY

OIDs

OID symbolic	OID numeric	Description
ciscoRoutePoliciesMIB	1.3.6.1.4.1.9.9.578	This module provides a subtree to define OIDs so that various routing 'policies' used by Cisco routers can be expressed. This module defines only this 'policy' OID space and doesn't define any other object. As an example, these OIDs are required by at least the following MIB objects: inetCidrRoutePolicy ( IP-FORWARD-MIB, RFC4292 ) and mplsL3VpnVrfRteInetCidrPolicy ( MPLS-L3VPN-STD-MIB RCS4382). Both of these objects are defined as OBJECT IDENTIFIERs without any defined semantics, to differentiate between multiple entries to the same destination in the tables inetCidrRoutePolicyTable and mplsL3VpnVrfRteInetCidrTable. These two objects utilise a generalised notion of 'policy' defined in this module. The table inetCidrRouteTable of IP-FORWARD-MIB may list multiple paths pointing out of (either): * different interfaces with the same next-hop ipv6 route 2003::/64 interface gig0/0 2222::1 ipv6 route 2003::/64 interface gig0/1 2222::1 * different interfaces with no next-hop ipv6 route 2003::/64 interface gig0/0 ipv6 route 2003::/64 interface gig0/1 2003::/64 and 2222::1 represent an IPv6 route-prefix and IPv6 next-hop respectively. If these interfaces were in different zones, then the 'InetAddressIPv6z' type next-hop could distinguish them. If they are in the same zone, then the two interfaces refer to the same link. The indices of inetCidrRouteTable are: inetCidrRouteDestType inetCidrRouteDest inetCidrRoutePfxLen inetCidrRoutePolicy inetCidrRouteNextHopType inetCidrRouteNextHop The inetCidrRoutePolicy object, when instantiated with a value from crpPolicyIfIndex, allows us to distinguish the routing table entries mentioned in the examples above. REFERENCE [1] IP-FORWARD-MIB (RFC4292) [2] MPLS-L3VPN-STD-MIB (RFC4382) [3] ifIndex, IF-MIB [4] RFC 4291 IP Version 6 Addressing Architecture, Section 2.2, Text Representation of Addresses.
ciscoRoutePoliciesMIBNotifs	1.3.6.1.4.1.9.9.578.0
ciscoRoutePoliciesMIBObjects	1.3.6.1.4.1.9.9.578.1
crpPolicies	1.3.6.1.4.1.9.9.578.1.1	A subtree to define OIDs so that various routing policies used by Cisco routers can be expressed. Such OIDs may serve as additional indices, e.g., as the values of inetCidrRoutePolicy in inetCidrRouteTable, to delineate between multiple routes to the same destination.
crpPolicyIfIndex	1.3.6.1.4.1.9.9.578.1.1.1	This OID specifies a set of policies, one for each ifIndex value. Specifically, the OID value of crpPolicyIfIndex.i is defined such that each inetCidrRouteTable entry for which the instance of inetCidrRoutePolicy has this value, is associated with ifIndex=i, and thereby is distinct for any inetCidrRouteTable entry associated with ifIndex=j. Note that the value of inetCidrRoutePolicy for the latter would be crpPolicyIfIndex.j. This set of policies is appropriate only if an ifIndex value is sufficient to distinguish between routes.
ciscoRoutePoliciesMIBConform	1.3.6.1.4.1.9.9.578.2

RFC description

Cisco routing policy MIB defining OID space for route policies used by Cisco routers and MPLS VPN systems.

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Download CISCO-ROUTE-POLICIES-MIB

What Is CISCO-ROUTE-POLICIES-MIB?

Supported Devices

Monitoring Examples

This MIB depends on

Related MIBs

RFC description