Subject: determine the presence of non-RSVP routers

From: Jie Zou <[email-masked]>
Date: Mon, 10 Jul 2000 11:12:06 -0400

Hello everyone,

I have a question about the determination of the presence of non-RSVP
routers:

In section 4.2.2, draft-ietf-mpls-rsvp-lsp-tunnel-05.txt

"if a router has a neighbor that is known to not be RSVP capable, the
router MUST NOT advertise the LABEL_REQUEST object when sending messages
that pass through the non-RSVP routers."

My question is that how a upstream node knows the downstream node is the
non-RSVP router or not?

Thanks.

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Jie Zou
MPLS Consortium
IOL, UNH
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