From: Igor Miroshnik (IgorMRADLAN.COM)
Date: Tue Mar 04 2003 - 04:24:45 CST

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Ladies and Gentlemen,

I have failed to find the answer in the archives. The question is what the
behavior of ABR should be when it is neither physically connected to the
backbone, nor having any configured virtual link. RFC2328 says such a
router (having active interfaces to multiple areas) marks its router LSA
with the bit B. Furthermore, as an ABR, the router originates summary LSAs
and injects them into the attached non-stub areas.

1. Are the routes built by internal routers on the basis of those summary
LSAs valid? Such inter-area routes pass between areas without the backbone
mediation.

2. ABR should only process the backbone summary LSAs. The database of the
router described has no backbone summary LSAs. Does it mean that this
router cannot build inter-area routes?

Thank you,
Igor

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