The MPLS WG Archive

[Jean Philippe Vasseur <jvasseur@cisco.com>]

At 16:37 12/02/2002 +0200, kaki brown wrote:
> no Claus.
> the ERO will not contain the requested detour.
>  
> but the CSPF will compute it in the PLR.
>  

using CSPF on the PLR to compute the backup tunnel is one option (see my
previous email).

JP.

> I think it is ok to
> make the computation when getting the RESV message, you dont have to do
> it when getting the FRR in the PATH message.
>  
> kaki.
>  
> ----- Original Message ----- 
> From:
> <claus.bauer@tellabs.com>
> To:
> <doug_degan@hotmail.com>;
> <mpls@UU.NET>;
> <pingpan@juniper.net>
> Sent: Tuesday, February 12, 2002 1:29 AM
> Subject: question on fast reroute
>
> > Hi
> > 
> > the draft-ping-rsvp-fastreroute states in section 5. "Note also
> that the
> > backup tunnel path computation may be performed by a centralized
> path
> > computation server or may use some distributed backup path
> computation
> > algorithms."
> > Does this mean that a PRL upon receipt of a fast reroute object
> triggers
> > the path computation server to calculate and send it the
> calculated
> > detour path ERO or could this also mean that the ERO for the
> various
> > detour paths are included in the RSVP PATH mesage for the working
> LSP ?
> > 
> > Thanks
> > Claus
> > 
> > 
> > Dr. Claus Bauer
> > Research engineer
> > Tellabs Research Center
> > One Kendall Square
> > Bldg. 100, Suite 121
> > Cambridge, MA, 02139
> > USA
> > 
> > Tel.: +1 617 577 8787
> > Fax.: +1 617 494 0118
> > 
> > 
> >