Data Description Exchange

[Shreayas Becker <[e-mail]>]

Hi,

I have few questions regarding DD exchange to understand what we can
implement/others implemented while trying form an adjacency.

Question:

Before changing into FULL state, I would like to know whether we need to
send LSA header information in DD packets.

If so, how we are going to calculate checksum for this LSA header (i.e.
just omit LS Age Information) and

What length one has to specify while mentioning its packet length (i.e.
even though, we are just going to send LSA Header, do we need to say Full
LSA packet size!)

Also, during exStart->exChange->Full transition, is it possible to form an
adjacency without sending LSA Header info in its DD packets.

Any Suggestions or comments are welcome!

Thanks and looking forward to all your replies!

- SB