[connect-wg] Fwd: draft-iops-grow-bgp-session-culling-00

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https://tools.ietf.org/html/draft-iops-grow-bgp-session-culling
<https://tools.ietf.org/html/draft-iops-grow-bgp-session-culling-00>

---------- Forwarded message ---------
From: Job Snijders <job at ntt.net>
Date: Sun, 12 Mar 2017 at 23:16
Subject: draft-iops-grow-bgp-session-culling-00
To: <grow at ietf.org>, <draft-iops-grow-bgp-session-culling at ietf.org>


Dear GROW,

With this BCP Internet-Draft we hope to draw some attention to
good practises which can be applied by IP networks or IXPs to
mitigate negative impact caused by maintenance operations on lower
layer networks. The idea is to promote the concept of breaking
the control-plane in a controlled fashion, before actually breaking
the data-plane.

Regarding the "Voluntary BGP Session Teardown Recommendations" - we all too
often see operators do the equivalent of 'yanking the cable out of its
socket' while not allowing any time for reconvergence. As far as I am
aware, there is no documentation which recommends to shutdown BGP sessions
and allow for some time for the traffic to subside due to rerouting, and
then commence with the maintenance.

Some background on the "Involuntary BGP Session Teardown Recommendations":
a number of years ago an (at the time novel) approach was presented on how
to reduce the negative impact of IXP maintenance. Since then the idea
gained popularity and is applied at more and more IXPs. The video + pdf are
available here: https://ripe67.ripe.net/archives/video/116/

The approaches outlined in this document may not be required in
every network topology, for instance some IXPs have fantastic 'make
before break' methodologies accomplished through a layer of photonic
switches.

I'd like to ask the chairs for a 10 minute slot in GROW's session a IETF 98
to present on this draft.

Kind regards,

Job

ps. Some may point out that this is a rampant layering violation, to which
I will say: "yes". ;-)

----- Forwarded message from internet-drafts at ietf.org -----

Date: Sun, 12 Mar 2017 14:00:18 -0700
From: internet-drafts at ietf.org
To: i-d-announce at ietf.org
Subject: I-D Action: draft-iops-grow-bgp-session-culling-00.txt


A New Internet-Draft is available from the on-line Internet-Drafts
directories.


        Title           : Mitigating Negative Impact of Maintenance through
BGP Session Culling
        Authors         : Will Hargrave
                          Matt Griswold
                          Job Snijders
                          Nick Hilliard
        Filename        : draft-iops-grow-bgp-session-culling-00.txt
        Pages           : 9
        Date            : 2017-03-12

Abstract:
   This document outlines an approach to mitigate negative impact on
   networks resulting from maintenance activities.  It includes guidance
   for both IP networks and Internet Exchange Points (IXPs).  The
   approach is to ensure BGP-4 sessions affected by the maintenance are
   forcefully torn down before the actual maintenance activities
   commence.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-iops-grow-bgp-session-culling/

There's also a htmlized version available at:
https://tools.ietf.org/html/draft-iops-grow-bgp-session-culling-00


Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at tools.ietf.org.

Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/

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