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Mitigating the Negative Impact of Maintenance through BGP Session Culling

Approval announcement
Draft of message to be sent after approval:


From: The IESG <>
To: IETF-Announce <>
Cc: The IESG <>,,, Christopher Morrow <>,,,,
Subject: Protocol Action: 'Mitigating Negative Impact of Maintenance through BGP Session Culling' to Best Current Practice (draft-ietf-grow-bgp-session-culling-05.txt)

The IESG has approved the following document:
- 'Mitigating Negative Impact of Maintenance through BGP Session Culling'
  (draft-ietf-grow-bgp-session-culling-05.txt) as Best Current Practice

This document is the product of the Global Routing Operations Working Group.

The IESG contact persons are Warren Kumari and Benoit Claise.

A URL of this Internet Draft is:

Ballot Text

Technical Summary

   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
   Basically, this suggests tearing down the BGP session (so it can reconverge)
   before breaking the data-plane. This is documenting a well known,
   and widely used (but not widely enough!) technique.

Working Group Summary

   Nothing of note in the WG process.

Document Quality

   This is documenting (with examples!) how to perform a
   operational practice which minimizes breakage. It is a 
   simple, but effective technique.


   Shepherd: Chris Morrow (
   Responsible AD: Warren Kumari (

RFC Editor Note