Working Group,

The chairs are considering the following text for a liaison statement to the 
Broadband Forum with regard to draft-ietf-bfd-unaffiliated-echo.

We'd like your feedback before we send it out.

-- Jeff

-------------

From group: bfd
From Contact: Jeffrey Haas
To Group: Broadband-forum
To Contacts: (bbf-contacts)
Cc: rtg-bfd@ietf.org, rtg-bfd-cha...@ietf.org, rtg-...@ietf.org
Response Contact: Jeffrey Haas, Reshad Rahman

Body:
The IETF Bidirectional Forwarding Detection (BFD) Working Group has begun
work on "Unaffiliated BFD Echo Function".  This work is happening in the
Internet-Draft draft-ietf-bfd-unaffiliated-echo.[1]

The BFD protocol (IETF RFC 5880, etc.) is used as a service in routers and
other IP gateway devices for testing bi-directional connectivity.  Such
devices benefit from having BFD as a common interface for monitoring the
status of such connectivity.  

The purpose of this work is to permit an implementation of BFD that supports
Echo functionality to be used with a Internet Protocol host that does not
support the BFD protocol, but is capable of providing the packet loopback
behavior required by the BFD Echo mechanism.  

The BFD Working Group is aware of an overlapping use case addressed by 
BBF TR-146.

We welcome feedback and further dialog regarding this work.


[1] https://datatracker.ietf.org/doc/draft-ietf-bfd-unaffiliated-echo/

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