Re: BFD chair response to presentation on draft-mirmin-bfd-extended

Jeffrey Haas <> Wed, 27 November 2019 20:18 UTC

Return-Path: <>
Received: from localhost (localhost []) by (Postfix) with ESMTP id 6891B120A7C; Wed, 27 Nov 2019 12:18:01 -0800 (PST)
X-Virus-Scanned: amavisd-new at
X-Spam-Flag: NO
X-Spam-Score: -1.901
X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, SPF_PASS=-0.001] autolearn=ham autolearn_force=no
Received: from ([]) by localhost ( []) (amavisd-new, port 10024) with ESMTP id n5i49evbfEcF; Wed, 27 Nov 2019 12:17:59 -0800 (PST)
Received: from ( []) by (Postfix) with ESMTP id DF6DE120A79; Wed, 27 Nov 2019 12:17:59 -0800 (PST)
Received: by (Postfix, from userid 1001) id AE4871E2F8; Wed, 27 Nov 2019 15:22:06 -0500 (EST)
Date: Wed, 27 Nov 2019 15:22:06 -0500
From: Jeffrey Haas <>
To: Dave Katz <>
Cc: "Les Ginsberg (ginsberg)" <>, "" <>, "" <>
Subject: Re: BFD chair response to presentation on draft-mirmin-bfd-extended
Message-ID: <>
References: <> <> <>
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Disposition: inline
Content-Transfer-Encoding: 8bit
In-Reply-To: <>
User-Agent: Mutt/1.5.21 (2010-09-15)
Archived-At: <>
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: "RTG Area: Bidirectional Forwarding Detection DT" <>
List-Unsubscribe: <>, <>
List-Archive: <>
List-Post: <>
List-Help: <>
List-Subscribe: <>, <>
X-List-Received-Date: Wed, 27 Nov 2019 20:18:01 -0000


On Fri, Nov 22, 2019 at 09:35:12PM +0000, Dave Katz wrote:
> If BFD’s transport semantics are that interesting, someone could take a
> week and whip up a transport that looks rather like BFD but is properly
> suited for the purpose.  That would make all of these issues go away, and
> would provide a common mechanism that could be used more broadly, and
> someone would have an RFC to be proud of.

That's effectively what the discussion needs to be.  And I agree, there's
plumbing like demand and echo that can be gotten rid of.

The adaptive timers are part of the charm that people seem to like, so I
suspect that'd still be a thing people want.  Just not necessarily 3ms
granularity. :-)

> I guess the irony of all of this is that when the BFD WG was formed it was
> expected to be the shortest-lived WG in history.  Now I suspect it’s going
> for a record in the other direction.  ;-)

I still resent Alex Z. and co. for leading me into that trap.

-- Jeff