With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ciiRouterLevel
Cisco IS-IS Router Level
1.3.6.1.4.1.9.10.118.1.1.7.1.2
The level of this Intermediate System.
Back to CISCO-IETF-ISIS-MIB MIB page.
IPHost Network monitor allows you to monitor ciiRouterLevel on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco optical switches right now.