With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ospfv3IfInstId
ospfv3 If Inst Id
1.3.6.1.3.102.1.7.1.23
Enables multiple instances of OSPFv3 to be run over a single link. Each protocol instance would be assigned a separate ID. This ID has local link significance only.
Back to OSPFV3-MIB MIB page.
IPHost Network monitor allows you to monitor ospfv3IfInstId 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.