Hello Team,
Thank you for the excellent topic in detail.
one question: do we need to enable on all the routers in broadcast and in each network segment ?
i labbed and enabled the prefix suppression only on DR
on P2P , enabled only one R3 interface facing R4
and added one more segment behind R4 ( broadcast ) where i enabled only on DR
it worked and has been filtered the transit prefix throughout the ospf domain.
Please confirm that do we need to enable on all routers or not ?
Hello Sathish
Your experiment seems to have the expected results. Prefix suppression in OSPF doesnât necessarily need to be enabled on all routers. It is typically enabled on transit routers to prevent unnecessary LSAs from being propagated throughout the OSPF domain.
In a broadcast network, it is typically enabled on the DR thus preventing the propagation of transit prefix LSAs to other routers in the OSPF domain.
So, to answer your question: no, prefix suppression doesnât need to be enabled on all routers. However, it should be enabled strategically on transit routers and/or DRs to efficiently suppress transit prefix LSAs.
I hope this has been helpful!
Laz