CSPF/3/INVAL_LINK: Received invalid link information from IGP [IgpName].
Invalid link information was received from the IGP protocol.
Received link information is not valid.
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.