Hello Folks,
Something which is not discussed in RFC5340 is how to treat Inter-Area
or External advertisements from an ABR/ASBR which has the R-bit clear in
its Router LSA. My initial thinking was that other routers should simply
ignore those advertisements.
However it later occurred to me that it might be desirable to reach
those destinations if they are on links directly connected to the
advertising router. And if those Inter-Area or External routes will be
installed in the routing tables of other routers, the ABR/ASBR should
stop advertising prefixes which are not on its own interfaces.
I think this deserves some discussion and we should have consensus so
that all routers behave the same way.
Regards,
Michael
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