[Idr] draft-chen-idr-ctr-availability-00.txt

Robert Raszuk <robert@raszuk.net> Mon, 09 March 2020 09:42 UTC

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From: Robert Raszuk <robert@raszuk.net>
Date: Mon, 9 Mar 2020 10:42:31 +0100
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Subject: [Idr] draft-chen-idr-ctr-availability-00.txt
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Dear Authors,

I read your draft and sorry to say do not have good news.

1)

First you break IBGP rule from base BGP spec. It is pretty standard that
controllers distribute information via IBGP and with the help of RRs. Only
RRs can send information received over IBGP to other IBGP peers.

In your case it is hard to assume that all NEs are RRs. It is also hard to
assume that always multiple controllers from the same controller cluster
will be connecting to the same RRs.

2)

The best solution to your problem is to have two independent controller
clusters. When fatal intra-cluster failures occur all cluster members
should drop BGP sessions to the network.

3)

Asking all network elements to participate in exchanging information
between controllers is really not a good idea. Not to mention that your
current encoding does not even have a notion of cluster id.

Many thx,
R.

---------- Forwarded message ---------
From: <internet-drafts@ietf.org>
Date: Mon, Mar 9, 2020 at 2:08 AM
Subject: I-D Action: draft-chen-idr-ctr-availability-00.txt
To: <i-d-announce@ietf.org>



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


        Title           : BGP for Network High Availability
        Authors         : Huaimo Chen
                          Yanhe Fan
                          Aijun Wang
                          Lei Liu
                          Xufeng Liu
        Filename        : draft-chen-idr-ctr-availability-00.txt
        Pages           : 12
        Date            : 2020-03-08

Abstract:
   This document describes protocol extensions to BGP for improving the
   reliability or availability of a network controlled by a controller
   cluster.



The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-chen-idr-ctr-availability/

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-chen-idr-ctr-availability-00
https://datatracker.ietf.org/doc/html/draft-chen-idr-ctr-availability-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:
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