With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ciiISAdjIPAddrIndex
Cisco IS-IS IS Adj IP Address Index
1.3.6.1.4.1.9.10.118.1.6.3.1.1
An index to this table which identifies the IP addresses to which this entry belongs.
Back to CISCO-IETF-ISIS-MIB MIB page.
IPHost Network monitor allows you to monitor ciiISAdjIPAddrIndex 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.