With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ciiCircLevelIDOctet
Cisco IS-IS Circ Level ID Octet
1.3.6.1.4.1.9.10.118.1.4.1.1.5
A one byte identifier that can be used in protocol packets to identify a circuit. Values of ciiCircLevelIDOctet do not need to be unique. They are only required to differ on LANs where the Intermediate System is the Designated Intermediate System.
Back to CISCO-IETF-ISIS-MIB MIB page.
IPHost Network monitor allows you to monitor ciiCircLevelIDOctet on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco mobile switches right now.