[mpls] Determining proper TTL of a tunnel in Fast LSP-alert Mechanism

Greg Mirsky <gregimirsky@gmail.com> Mon, 26 July 2010 20:52 UTC

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Date: Mon, 26 Jul 2010 13:53:19 -0700
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From: Greg Mirsky <gregimirsky@gmail.com>
To: Autumn Liu <autumn.liu@ericsson.com>, Sriganesh Kini <sriganesh.kini@ericsson.com>, mpls@ietf.org
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Subject: [mpls] Determining proper TTL of a tunnel in Fast LSP-alert Mechanism
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Dear Authors,
the Section 3.2.2 states new requirement which ends with the sentence:
"An LSP label on the forwarded packet MUST continue to have TTL set to 1."
But at the same time, in Section 6 when outlining direction for future work,
it is said that in heterogeneous environment value of TTL must be determined
by each node that supports the Fast LSP-alert mechanism. Does that scenario
invalidates the requirement put forward in Section 3.2.2?

Regards,
Greg