With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
bgpPeerIdentifier
bgp Peer Identifier
1.3.6.1.2.1.15.3.1.1
The BGP Identifier of this entry's BGP peer.
Back to BGP4-MIB MIB page.
IPHost Network monitor allows you to monitor bgpPeerIdentifier on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco multiplexers right now.