BFD Admin-down

"Jagrati Shringi" <shringi@gmail.com> Thu, 20 December 2007 19:19 UTC

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Date: Thu, 20 Dec 2007 14:08:47 -0500
From: Jagrati Shringi <shringi@gmail.com>
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Subject: BFD Admin-down
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I have a question regarding BFD state - Administratively-down. The base
draft recommend that we send a packet with
Local state: Down  and Appropriate diag in this case and then stop
transmitting control packets. This way we will send very few or may be one
packet with state down and diagnostic:7 .

My question is, this seem to be the only case in BFD where we will not be
able to maintain correct diagnostic on remote end, in case the packet
carrying this information is dropped. If the peer does not receive this
packet, it will move to down-state with Diag :Control Detection Time
Expired, instead of Neighbor Signaled Session Down.

Please let me know what is the recommended approach in this case, so that we
maintain right state/diag code on peer, even if we loose some packets.

Thanks in advance for your help.

Jagrati Shringi,
Senior Software engineer,
ECI Telecom.