With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cagwSessionsDeletedByAgw
Cisco's ASN Gateway Sessions Deleted By Agw
1.3.6.1.4.1.9.9.638.1.3.1.1.1.69
Number of sessions deleted by the ASN-GW.
Back to CISCO-ASN-GATEWAY-MIB MIB page.
IPHost Network monitor allows you to monitor cagwSessionsDeletedByAgw 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.