With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
bgpPeerInTotalMessages
bgp Peer In Total Messages
1.3.6.1.2.1.15.3.1.12
The total number of messages received from the remote peer on this connection. This object should be initialized to zero when the connection is established.
Back to BGP4-MIB MIB page.
IPHost Network monitor allows you to monitor bgpPeerInTotalMessages 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.