Re: [Idr] 2 week WG LC for draft-ietf-idr-shutdown-02 (1/17 to 1/31/2017)

Jeffrey Haas <jhaas@pfrc.org> Fri, 27 January 2017 21:33 UTC

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Date: Fri, 27 Jan 2017 16:38:33 -0500
From: Jeffrey Haas <jhaas@pfrc.org>
To: Susan Hares <shares@ndzh.com>
Message-ID: <20170127213832.GA20988@pfrc.org>
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Cc: idr@ietf.org, draft-ietf-idr-shutdown@ietf.org
Subject: Re: [Idr] 2 week WG LC for draft-ietf-idr-shutdown-02 (1/17 to 1/31/2017)
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Sue and authors,

On Tue, Jan 17, 2017 at 04:04:18PM -0500, Susan Hares wrote:
> This begins a 2 week WG Last Call for draft-ietf-idr-shutdown-02.txt
> (1/17/2017 to 1/31/2017).  Section 7 of this document lists the
> implementations that have been created for this BGP functionality.   These
> include: ExaBGP, pmacct, OpenBGPD, Wireshark (packet analyzer), and tcpdump

While working through the likely changes in our BGP implementation, the
following thought occurred while looking at the relevant RFC 4486 sub-codes
and triggers.

RFC 4486 defines two administrative actions that seem applicable to this
draft:

         2        Administrative Shutdown
         4        Administrative Reset

The draft covers code point 2.

I believe the draft should cover both administrative sub-codes.  It also
permits two slightly different work flows:

run clear bgp neighbor 192.0.2.1 reason "You have a bgp wedgie and I'm trying to clear it"

set protocols bgp group external neighbor 192.0.2.1 shutdown reason "De-peered with prejudice"

The first allows a reset reason to be passed along that may be transient.

The second permits a reason to persist in subsequent attempts when that BGP
speaker tries to re-connect.

Beyond the above point, I find the document to be of good quality.

-- Jeff