Hi Sam,
if path between two VTEPs of the same VXLAN has entropy that BFD MAY exercise, 
then there MAY be multiple BFD sessions. I see this as closer to 
5884clarification then to 5881.

                Regards,
                                Greg

From: Sam Aldrin [mailto:[email protected]]
Sent: Tuesday, November 03, 2015 11:38 AM
To: Gregory Mirsky
Cc: [email protected]
Subject: Re: Multiple BFD sessions between the same pair of end-points

Does that apply to BFD for VXLAN as well?

On Nov 2, 2015, at 6:26 PM, Gregory Mirsky 
<[email protected]<mailto:[email protected]>> wrote:

Dear All,
I think that this paragraph from Section 2 of RFC 5881 prohibits multiple 
single-hop BFD sessions between the same pair of end points:
   Each BFD session between a pair of systems MUST traverse a separate
   network-layer path in both directions.  This is necessary for
   demultiplexing to work properly, and also because (by definition)
   multiple sessions would otherwise be protecting the same path.

                Regards,
                                Greg

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