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Re: link-local/optional capabilities signaling
From: Liem Nguyen (lhnguyenCISCO.COM)
Date: Tue May 13 2003 - 18:10:25 CDT
On Tue, May 13, 2003 at 04:49:39PM -0600, Juan A. Rubio wrote:
> Hi everyone,
> I have a question regarding exchange of optional capabilities in OSPFv2 in
> general and link-local signaling in particular.
> In draft-nguyen-ospf-lls-02.txt the LLS block may be attached to type-1
> and type-2 packets (HELLOs and DBDs). Is there any reason to not attach
> these LLS blocks to other packet types?. I know that in OSPFv2 the Options
> field is present in Hello packets, DBD packets and the LSA header. That
> means that there is optional capabilities info in packets other that
> type-1 and type-2, in particular type-3, UPDATE packets. So, is there any
> reason to specifically avoid link-local/optional capabilities signaling in
> other packet types?.
There's no technical reason, just unnecessary.
The purpose is to "signal" and exchange capability, so it's suffice
to convey such information during neighbor/adjacency bring-up.