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Liaison statement
For Information TR-146 and draft-ietf-bfd-unaffiliated-echo

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State Posted
Submitted Date 2022-01-21
From Contact Dave Sinicrope
To Group bfd
To Contacts Jeffrey Haas <>
Reshad Rahman <>
Cc Alvaro Retana <>
John Scudder <>
Martin Vigoureux <>
Dave Sinicrope <>
Jeffrey Haas <>
Reshad Rahman <>
Bidirectional Forwarding Detection Discussion List <>
Purpose For information
Attachments (None)
The BBF thanks the IETF BFD WG for informing us of important work on the BFD

We wanted to clarify the "overlapping use case with TR-146". TR-146 leverages
BFD Echo as a connectivity check mechanism. It does so in a manner where the
peer does not need a full BFD implementation to echo the packet received. In
our opinion, no future standardization is required to support TR-146. There is
no current interest in revising TR-146 to leverage the enhancement of the BFD
protocol. We noted in the BBF community that those interested in participating
should do so in the IETF BFD WG.


Lincoln Lavoie,
Broadband Forum Technical Committee Chair