With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cbgpPeerWithdrawnPrefixes
CISCO BGP4 Peer Withdrawn Prefixes
1.3.6.1.4.1.9.9.187.1.2.4.1.8
This counter is incremented when a route prefix, which belongs to an address family, is withdrawn on this connection. It is initialized to zero when the connection is undergone a hard reset.
Back to CISCO-BGP4-MIB MIB page.
IPHost Network monitor allows you to monitor cbgpPeerWithdrawnPrefixes on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.