CSPF/3/IGP_NWLSA_INFONULL: Received a Network-LSA with null information from IGP [IgpName].
A network-LSA event that did not contain any network-LSA information was received from the IGP protocol.
[IgpName]
Indicates the name of an IGP protocol, such as IS-IS and OSPF.
Network LSA event does not contain any network lsa information.
If IGP is OSPF use display ospf lsdb opaque-link and display ospf lsdb opaque-area command.
If IGP is ISIS use display isis traffic-eng link and display isis traffic-eng network command.