With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cagwPathRev1Entry
Cisco's ASN Gateway Path Rev1 Entry
1.3.6.1.4.1.9.9.638.1.3.5.2.1
Path Information.
Back to CISCO-ASN-GATEWAY-MIB MIB page.
IPHost Network monitor allows you to monitor cagwPathRev1Entry 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.