Re: Reposting: question on GMPLS TE flooding with OSPF

[Yakov Rekhter <yakov@juniper.net>]

Anca,

> Sorry for re-posting this, but I still couldn't figure it out. Could 
> someone please give a brief explanation?
> Regards,
> Anca Zamfir
> 
> At 06:02 AM 8/21/2002 -0400, Anca Zamfir wrote:
> >Hi,
> >When a node floods TE link information using OSPF, it needs to fill in the 
> >neighbor OSPF RouterID as Link ID in the Link TLV. For an optical TE link, 
> >this node discovers (e.g. using LMP) the neighbor TE Node ID, therefore it 
> >will need the mapping between the neighbor TE Node ID and the neighbor 
> >RouterID in order to be able to fill in the required information.
> >Is a GMPLS node expected to flood the Router TLV only, before the first TE 
> >Link is configured? If yes, I was not able to find this specified in 
> >draft-katz-yeung-ospf-traffic-06.txt or 
> >draft-ietf-ccamp-ospf-gmpls-extensions-07.txt
> >Or is there another mechanism in place to discover this mapping?
> >Same questions may be valid for IS-IS.

Perhaps adding something like the following to the LMP spec
would address your question:

    Node ID: a single, stable IP address that identifies a node.  For
       a node running OSPF, the LMP Node ID is the same as the OSPF
       Router ID.  For a node running IS-IS and advertising the TE
       Router ID TLV, the Node ID is the same as the advertised Router
       ID.

Yakov.