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Cisco Bug: CSCur22182 - SNMP walk aborts as BGP MIB OID does not increase with BGP VPNv4

Last Modified

Feb 23, 2018

Products (1)

  • Cisco Nexus 7000 Series Switches

Known Affected Releases

6.2(10)S97

Description (partial)

Symptom:
snmpwalk aborts when performing a snmpwalk on CISCO-BGP4-MIB, when any bgp peer is configured with both VPNv4 Unicast AF(afi=1, safi=128), IPv6 Unicast AF (afi=2, safi=1) and/or IPv6 Multicast AF(afi=2, safi=2). Snmpwalk on the following tables are affected and will not be queried completely and aborts when querying VPNv4 unicast AF of any peer with above mentioned configuration:

- cbgpPeerAddrFamilyTable
- cbgpPeerAddrFamilyPrefixTable
- cbgpPeer2AddrFamilyTable
- cbgpPeer2AddrFamilyPrefixTable

This issue will abort snmpwalk on cbgpPeer (1.3.6.1.4.1.9.9.187.1.2) or any oid tree that includes these tables.

Example:
.1.3.6.1.4.1.9.9.187.1.2.7.1.3.1.4.19.0.101.6.2.1 = IPv6 Unicast
.1.3.6.1.4.1.9.9.187.1.2.7.1.3.1.4.19.0.101.6.1.128 = VPNv4 Unicast
<snmpwalk aborts here>

Conditions:
Occurs when any bgp peer is configured with both VPNv4 Unicast AF(afi=1, safi=128), IPv6 Unicast AF (afi=2, safi=1) and/or IPv6 Multicast AF(afi=2, safi=2)
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