Add support for "[no] ip ospf capbility opaque" at the interface
level with the default being capability opaque enabled. The command
"no ip ospf capability opaque" will disable opaque LSA database
exchange and flooding on the interface. A change in configuration
will result in the interface being flapped to update our options
for neighbors but no attempt will be made to purge existing LSAs
as in dense topologies, these may received by neighbors through
different interfaces.
Topotests are added to test both the configuration and the LSA
opaque flooding suppression.
Signed-off-by: Acee <aceelindem@gmail.com>
fixes#13584
The test had the ospf client injecting multiple opaque LSAs on 5s pace,
but the test itself verified and advanced on an LSA in the middle of
that sequence and not the last one. Then the test reset the ospf client
and originating router. If a later injected LSA managed to get in to the
router and flooded prior to the client/router reset then the opaque data
or sequence number could differ from the expected value.
Signed-off-by: Christian Hopps <chopps@labn.net>
1. Fix OSPF opaque LSA processing to preserve the stale opaque
LSAs in the Link State Database for 60 seconds consistent with
what is done for other LSA types.
2. Add a topotest that tests for cases where ospfd is restarted
and a stale OSPF opaque LSA exists in the OSPF routing domain
both when the LSA is purged and when the LSA is reoriginagted
with a more recent instance.
Signed-off-by: Acee <aceelindem@gmail.com>
