With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cmiMrRegLifetime
Cisco Mobile IP Mr Registration Lifetime
1.3.6.1.4.1.9.9.174.1.5.5.4
The requested lifetime in registration requests.
Back to CISCO-MOBILE-IP-MIB MIB page.
IPHost Network monitor allows you to monitor cmiMrRegLifetime 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.