With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cpimExtIfHelloHoldtime
cpim Ext If Hello Holdtime
1.3.6.1.4.1.9.10.120.1.1.1.1.2
The value set in the Holdtime field of Hello messages transmitted on this interface. This should be 3.5 times the value of cPimInterfaceHelloInterval.
Back to CISCO-IETF-PIM-EXT-MIB MIB page.
IPHost Network monitor allows you to monitor cpimExtIfHelloHoldtime 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.