Subject: Inter-Area-Router LSAs

From: Suvani Kaura <[email-masked]>
Date: Fri, 8 Nov 2002 12:50:15 -0800

Hi All,

I was trying to figure out what the use of Options is in the Inter
Area Router LSAs.

Of the 6 options described by RFC2740, N bit should always be unset
(because no summary-4 lsa is generated for NSSA ASBR, acc to the NSSA
draft) - conversely E-bit will always be set.

That leaves DC/MC/R/V6 bits. RFC 1793 indicates that type-4 LSAs are
used as "Indication lsas", by clearing the DC bit of those LSAs.  Is
there any other use of learning the options of a router in another
area?

Thanks,
Suvani

__________________________________________________
Do you Yahoo!?
U2 on LAUNCH - Exclusive greatest hits videos
http://launch.yahoo.com/u2