With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ciiSysL2toL1Leaking
Cisco IS-IS Sys L2to L1 Leaking
1.3.6.1.4.1.9.10.118.1.1.1.9
If true, allow the router to leak L2 routes into L1.
Back to CISCO-IETF-ISIS-MIB MIB page.
IPHost Network monitor allows you to monitor ciiSysL2toL1Leaking 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.