BGP4-REFLECT-MIB

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Organization: IETF IDR Working Group

Last Updated: 2001-02-23

Description: IETF IDR extension MIB for managing BGP-4 route reflection cluster IDs, route-reflector status, and reflected-peer attributes on routers (RFC 2796)

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What Is BGP4-REFLECT-MIB?

BGP4-REFLECT-MIB is a vendor-neutral IETF IDR working group extension MIB (aligned with RFC 2796) that adds management objects for BGP-4 Route Reflection, covering cluster ID assignment, route-reflector role status, and attributes of reflected routes/peers. It falls in the routing-protocol configuration and state category, focused on how a router participates in a route-reflector hierarchy rather than on hardware or general system health. Its monitoring use is protocol-software-state oriented: confirming a router's configured cluster ID and reflector status match the intended route-reflection topology, and checking reflected-peer attributes to catch route-reflection loops or misconfigurations, which is a software/control-plane health concern rather than a physical one. It explicitly extends the base BGP4-MIB, reusing its peer and path-attribute indexing conventions. It is deployed on core routers acting as BGP route reflectors or route-reflector clients in large iBGP networks. Engineers implementing or auditing this functionality typically reference the BGP4-REFLECT-MIB RFC/standard documentation for the authoritative specification.

IPNetwork Monitor allows you to monitor SNMP objects defined in BGP4-REFLECT-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

vendor-neutral, standards-based MIB, not tied to a specific manufacturer
BGP-4 route reflector routers

Monitoring Examples

No sample_objects were provided in the input for this module, so no specific table or object names can be quoted; based on its stated scope it would expose objects for a router's configured cluster ID, its route-reflector-client relationship per peer, and attributes of routes reflected between clients. An operator would check such objects to confirm peers are correctly marked as reflector clients and that the cluster ID matches network design, revealing misconfigured iBGP topologies that could cause routing loops. No fabricated object names are used given the absence of sample data.

Imported Objects

From BGP-MIB

bgp	MODULE-IDENTITY
bgpPeerEntry	OBJECT-TYPE

From BGP4-MIB

bgp4PathAttrEntry

OBJECT-TYPE

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

IpAddress
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
mib-2

From SNMPv2-TC

TruthValue

OIDs

OID symbolic	OID numeric	Type	Access	Description
bgpReflect	1.3.6.1.2.1.15.11			Extension of the MIB module for BGP-4 to include information about attributes and characteristics defined in BGP Route Reflection. Reference: RFC 2796 - BGP Route Reflection.
IP bgpClusterId	1.3.6.1.2.1.15.11.1	IpAddress	read-only	The configured Cluster-ID of the local router. A value of 0.0.0.0 indicates the absence of this value.
bgpPeerReflectTable	1.3.6.1.2.1.15.11.2		not-accessible	BGP Peer Reflect Table. This table maintains information about whether each peer is a Route Reflector.
bgpPeerReflectEntry	1.3.6.1.2.1.15.11.2.1		not-accessible	Peer related information pertaining to Route Reflection.
INT bgpPeerIsReflectorClient	1.3.6.1.2.1.15.11.2.1.1	INTEGER	read-only	This value indicates whether the given peer is a reflector client of this router, or not. A value of nonClient indicates that this peer is not a reflector client. A value of client indicates that this peer is a reflector client that is not fully meshed with other reflector clients. A value of meshedClient indicates that the peer is a reflector client and is fully meshed with all other reflector clients.
bgp4ReflectTable	1.3.6.1.2.1.15.11.3		not-accessible	BGP Reflect Table. This table contains the route reflection specific path attributes received with a given route.
bgp4ReflectEntry	1.3.6.1.2.1.15.11.3.1		not-accessible	Information about the route reflection specific path attributes received with a given route.
IP bgp4PathAttrOriginatorId	1.3.6.1.2.1.15.11.3.1.1	IpAddress	read-only	The Originator-ID identifying the router that initially advertised this destination to a Route Reflector. A value of 0.0.0.0 indicates the absence of this attribute. This attribute is defined in [RFC2796].
OCT bgp4PathAttrClusterList	1.3.6.1.2.1.15.11.3.1.2	OCTET STRING	read-only	A sequence of four octet long values representing the reflection path that the route has passed. Each four octet long value represents the ID of a cluster that the route has traversed. A length of zero (0) indicates the absence of this attribute. This attribute is defined in [RFC2796].

RFC description

Extension MIB for BGP-4 route reflection as defined in RFC 2796, extending BGP4-MIB with route reflector attributes.

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Download BGP4-REFLECT-MIB

What Is BGP4-REFLECT-MIB?

Supported Devices

Monitoring Examples

This MIB depends on

Related MIBs

RFC description