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TE Constraints change question

To: <mpls@uu.net>,<te-wg@ops.ietf.org>
Subject: TE Constraints change question
From: "Leonid Dubinsky" <leonid@cwnt.com>
Date: Thu, 10 Jan 2002 11:13:01 +0200

Hi all,

I have a question concerning the following scenario:
Consider an LSR A that is an ingress point for some LSP L1. L1 is established after CSPF calculation, and it is defined to traverse only "blue" links. Now administrator changes the color of a link along the path of L1 from "blue" to "red", and LSR A learns about it from IGP-TE updates.
The question is, should LSR A try to reopen the LSP? If there are no valid paths that satisfy the constraints of L1 currently, should L1 be torn down?

Best Regards,
    Leonid Dubinsky.

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