Smarts NPM/BGP: Cisco 12000 series router is not recognized as a part of the BGP network

Products

• VMware Smart Assurance

Issue/Introduction

Symptoms:




Smarts NPM does not recognize a Cisco 12000 series router as a part of the BGP network
Environment has two Cisco 12000 routers with different IOS versions, but only one router is showing in the Smarts NPM BGP network

Environment

VMware Smart Assurance - SMARTS

Cause

The problem device is not configured completely for BGP on the Cisco IOS side. Before Smarts NPM conducts a deep BGP discovery on Smarts NPM BGP, the Smarts IP-AM does a "lite" discovery to create topology components for Smarts NPM BGP. The Smarts IP-AM lite discovery uses the OID bgpPeerLocalAddrOID {".1.3.6.1.2.1.15.3.1.5"} to determine and mark the device as part of the BGP network, and puts the device under BGP TopologyCollection. If the router device has a very limited BGP configuration on it, it may not be marked as BGP on the Smarts IP-AM side, and so will not be recognized by Smarts NPM.

The SNMP walk for such a device could look like the following:

sm_snmp -d rou33900ca -p 30080 -c public walk .1.3.6.1.2.1.15

SNMP Walk MIB starting at .1.3.6.1.2.1.15

.1.3.6.1.2.1.15.1.0 = 10
.1.3.6.1.2.1.15.2.0 = 65333
.1.3.6.1.2.1.15.4.0 = 10.x.x.x

Resolution

To prevent/resolve this issue, ensure that the router device is configured properly for BGP on the Cisco IOS side.