With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cagwMsgResent
Cisco's ASN Gateway Message Resent
1.3.6.1.4.1.9.9.638.1.3.3.1.1.4
Total number of messages Resent.
Back to CISCO-ASN-GATEWAY-MIB MIB page.
IPHost Network monitor allows you to monitor cagwMsgResent 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.