The RFC 4444 support is only for IPv6 IS-IS.

Note:

ISIS RFC 4444 MIB support is verified and validated for devices only with IPv6 configured in them. For pure IPv4 devices with RFC 4444 ISIS-MIB support, the devices get discovered by the IP Manager but will not be listed as part of ISIS_TopologyCollection and hence the Network Protocol Manager for IS-IS will not discover the devices.

RFC 4444 followed devices (ISIS IPv6 MIB) are fully supported regardless of device vendors (Cisco and Juniper). Discovery and monitoring support is complete and the Network Protocol Manager for IS-IS is able to stitch topologies discovered using RFC 4444 MIBs.

Following is the complete OID information for RFC 4444:

###################################
# ISIS-MIB - RFC 4444
###################################
#isisAreaAddr
      {40, ".1.3.6.1.2.1.138.1.1.3.1.1"},
#isisSysLevelType
      {45, ".1.3.6.1.2.1.138.1.1.1.2"},
#isisISAdjIPAddrAddress
      {50, ".1.3.6.1.2.1.138.1.6.3.1.3"},
#isisCircIfIndex
      {51, ".1.3.6.1.2.1.138.1.3.2.1.2"},
#isisRouterSysID
      {55, ".1.3.6.1.2.1.138.1.1.1.3"},
#isisISAdjNeighPriority
      {60, ".1.3.6.1.2.1.138.1.6.1.1.10"},
#isisISAdjState
      {65, ".1.3.6.1.2.1.138.1.6.1.1.2"}