Opaque LSAs are a generic OSPF mechanism
used to carry auxiliary information in the OSPF database. Opaque LSAs are most commonly used
to support OSPF traffic engineering.
Normally, support for opaque LSAs is autonegotiated between OSPF
neighbors.
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In the event that you experience interoperability
problems, you can disable opaque LSAs across the entire system using
the following command:
disable ospf capability opaque-lsa
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Re-enable opaque LSAs across the entire system:
enable
ospf capability opaque-lsa
If your network uses opaque LSAs, we recommend
that all routers on your OSPF network support opaque LSAs. Routers that do not support
opaque LSAs do not store or flood them. At minimum a well interconnected subsection of
your OSPF network must support opaque LSAs to maintain reliability of their
transmission.
