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Fwd: LSP-Rerouting

  • From: Roger Clark Williams <rogerw@nordlink.com>
  • Date: Wed, 20 Nov 2002 23:21:15 -0500
  • Resent-Date: Thu, 21 Nov 2002 00:27:20 -0500
  • To: MPLS-ops Mailing List <mpls-ops@mplsrc.com>
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Ramon, there are two different scenarios here. The first I think is what 
you are implying: The use of MPLS-aware ATM switches. The other option 
would be using an ATM pipe to carry frame-mode MPLS, so that doesn't really 
fit your question.

When a link fails, the router portion of the MPLS-aware ATM switch will use 
the normal IGP to re-establish a shortest-path IP route. Once that is done, 
ATM VCs that are part of the new LSP are set up to carry the cell-mode 
traffic just as they would have been before the link failure.

Roger Williams

>Resent-Date: Wed, 20 Nov 2002 14:27:14 -0500
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>From: "Ramon Jimenez" <jimenezra@cantv.net>
>To: <mpls-ops@mplsrc.com>
>Date: Wed, 20 Nov 2002 14:57:32 -0400
>X-Mailer: Microsoft Outlook Express 6.00.2720.3000
>Subject: [MPLS-OPS]: LSP-Rerouting
>Resent-From: mpls-ops@mplsrc.com
>X-Mailing-List: <mpls-ops@mplsrc.com> archive/latest/4807
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>Hello...
>
>In MPLS-LDP Cell Mode, which mechanism is used to re-route a LSP after a
>link failure is restablished?
>
>Best Regards
>
>Ramón Jiménez
>Intesa - Venezuela
>
>
>
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