Thanks, Phil. I am copying Certzone so the corrections can be made.

>Just finished reading this white paper by Howard and
>have the following points to raise.
>
>Page 8 (A4 wise) last line states : "OSPF does not use
>a transport protocol like UDP or TCP, but runs
>directly over the Data Link Layer". This looks like a
>typo as it runs over IP on port 89.

Yes. My fingers were thinking ISIS.



>
>
>Page 13 presents a table of LSA's type and purpose.
>
>Type 2 (network) states that this LSA can be generated
>by any router. With reference to Doyle, Caslow and RFC
>1247 it appears that this LSA can only be generated by
>the DR for multi-access networks. I appear to have
>confirmed this also in my lab.

By "any router," I was referring to the "box".  A box can have zero 
or more designated routers.  I believe the statement is correct that 
any router -- interior, backbone, ABR, or ASBR can generate it.

Incidentally, if you want to check the RFC, use RFC2328,  1247 is ancient.

>
>Referring to the same table :
>
>Type 4 (ABR) states that the contents route to 'Area
>Border Router' whereas Caslow and RFC 1247 states that
>they route to AS Boundary routers.


You are correct.

>
>Phil.




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