Re: questions on draft-vasseur-ccamp-inter-area-as-te-00.txt

["Adrian Farrel" <adrian@olddog.co.uk>]

Forwarded to CCAMP

[Arthi, you sent it to me and Kireeti as list owners, not to the mail exploder]


----- Original Message ----- 
From: "Arthi Ayyangar" <arthi@juniper.net>
To: "Kullberg Alan-G19424" <alan.kullberg@motorola.com>
Cc: <owner-ccamp@ops.ietf.org>; <jpv@cisco.com>
Sent: Thursday, July 22, 2004 12:24 AM
Subject: Re: questions on draft-vasseur-ccamp-inter-area-as-te-00.txt


> Hi Alan,
> 
> > I have a couple of questions on draft-vasseur-ccamp-inter-area-as-te-00.txt.
> 
> > 1. How are the following 2 flags related:
> >     0x02: LSP stitching required
> >     0x04: LSP stitching desired
> > >From my reading of the draft, they may be used for the same purpose,
> > >and therefor 1 of them should be removed?
> --------->  Yes, this was a mistake in the draft and has been rectified in
> the new doc. draft-vasseur-ccamp-inter-area-as-te-00.txt is the older
> version of the draft. The signaling aspects are now covered in
> draft-ayyangar-ccamp-inter-domain-rsvp-te-00.txt.
> Looks like the draft was not announced here in ccamp.
> 
> 
> > 2. Regarding LSP Stitching: How does the egress of the stitch segment
> > associate the inter-AS LSP and the LSP segment? To clarify, from the
> > example on page 19:
> >    "Eventually as the Resv message for the inter-AS TE LSP
> >     traverses back from ASBR9 to ASBR7 and reaches ASBR7, ASBR7 will
> >     remember to swap the LSP segment label with the label received for the
> >     inter-AS LSP from ASBR9. Also, ASBR7 will itself allocate a NULL label
> >     in the Resv message for the inter-AS TE LSP and sends the Resv message
> >     to ASBR4." What objects in the Path or Resv messages does ASBR7 use
> > to associate the inter-AS LSP with the LSP segment?
> --------->  The IF_ID Hop object would be used to identify the LSP
> segment. The signaling procedures are similar to those described in
> section 8.1.1 of the LSP Hierarchy draft for identification of the FA-LSP.
> 
> thanks,
> -arthi
> 
>