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[mpls] BFD Packet Flow

RAKESH GUPTA <gupta_rakesh62@yahoo.co.in> Thu, 12 August 2010 10:20 UTC

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Date: Thu, 12 Aug 2010 15:50:34 +0530
From: RAKESH GUPTA <gupta_rakesh62@yahoo.co.in>
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Subject: [mpls] BFD Packet Flow
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hi,

I have query regarding BFD packet flow when LSP Ping is used for bootstrapping. 

As per my understanding from the RFC 5880 and RFC 5884 when LSP Ping is used for bootstrapping the remote end MUST reply with BFD control in response to the LSPPing.

The specification does not clearly specify about the Stat parameter value that should be returned in the response of LSPPing. Should it have the value Init or Down? Or it might be possible to return no stat information.

Can someone please share the exact packet flow that happens during BFD session set up with LSPPing in Bootstrap till the session comes into UP state?

thanks a lot in advance for ur help,
rakesh

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