Dear All,
I stand corrected, BFD Echo format is not defined in the RFC 5880 but there
requirement suggesting that BFD Discriminator MAY be used to demux Echo replies:
The payload of a BFD Echo packet is a local matter, since only the
sending system ever processes the content. The only requirement is
that sufficient information is included to demultiplex the received
packet to the correct BFD session after it is looped back to the
sender. The contents are otherwise outside the scope of this
specification.
Regards,
Greg