With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
mnAdvTimeReceived
mn Adv Time Received
1.3.6.1.2.1.44.1.3.2.2.6
The time at which the most recently received advertisement was received.
Back to MIP-MIB MIB page.
IPHost Network monitor allows you to monitor mnAdvTimeReceived 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.