With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cagwIdleModePageAttemptsLocUpdt
Cisco's ASN Gateway Idle Mode Page Attempts Location Update
1.3.6.1.4.1.9.9.638.1.3.1.1.1.113
The number of idlemode paging attempts for location update.
Back to CISCO-ASN-GATEWAY-MIB MIB page.
IPHost Network monitor allows you to monitor cagwIdleModePageAttemptsLocUpdt on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.