Re: [irs-discuss] Fwd: I-D Action: draft-keyupate-bgp-services-01.txt

"Keyur Patel (keyupate)" <keyupate@cisco.com> Mon, 22 October 2012 23:02 UTC

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From: "Keyur Patel (keyupate)" <keyupate@cisco.com>
To: Robert Raszuk <robert@raszuk.net>, idr wg <idr@ietf.org>, "irs-discuss@ietf.org" <irs-discuss@ietf.org>
Thread-Topic: [irs-discuss] Fwd: I-D Action: draft-keyupate-bgp-services-01.txt
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Date: Mon, 22 Oct 2012 23:01:59 +0000
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Cc: Pedro Marques <pedro.r.marques@gmail.com>, "David Ward \(wardd\)" <wardd@cisco.com>, "rjs@rob.sh" <rjs@rob.sh>, Kireeti Kompella <kireeti.kompella@gmail.com>
Subject: Re: [irs-discuss] Fwd: I-D Action: draft-keyupate-bgp-services-01.txt
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Hi Robert,

Thanks for the comments. :) Comments inlined #Keyur.

On 10/22/12 3:02 PM, "Robert Raszuk" <robert@raszuk.net> wrote:

>Dear authors,
>
>After reading this document I would like to observe that BGP seems to
>not fit to the proposed application. Not that it is BGP fault, but the
>service model required for service dissemination and discovery is much
>better to be based on publish, subscribe, search primitives rather
>then p2mp data base distribution propagation which is the BGP model.

#Keyur: BGP has its own Pub sub model through use of RT. You could use it
if you like. :)

>
>Putting gateways between service providers and service consumers is a
>nice try to address the end point BGP protocol language barrier, but
>it does not address the discovery model.

#Keyur: The draft provides a way to have a service discovery.

>
>While one could argue that services could have attached RTs and
>RT-Constrain could be used to push filter to only receive what is
>necessary however current industry have already solved this problem in
>a much more elegant way by using MAP servers and IF-MAP protocol
>between producers and consumers. The database behind the MAP server
>can be build in a very robust way (as compared to today's BGP state of
>the art).

#Keyur: I haven't seen a solution yet and so cant speak for it. ;)
However, the draft provides BGP as a transport for service discovery and
service advertisement.

>
>I would recommend for the authors to consider such alternatives and
>possibly rewrite the proposal to make it fit the needs of this very
>important class of application which is service discovery.

#Keyur: Sure.

Regards,
Keyur

>
>Best regards,
>R.
>
>---------- Forwarded message ----------
>From:  <internet-drafts@ietf.org>
>Date: Mon, Oct 22, 2012 at 11:13 PM
>Subject: I-D Action: draft-keyupate-bgp-services-01.txt
>To: i-d-announce@ietf.org
>
>
>
>A New Internet-Draft is available from the on-line Internet-Drafts
>directories.
>
>
>        Title           : Service Advertisement using BGP
>        Author(s)       : Keyur Patel
>                          Jan Medved
>                          Rex Fernando
>                          Burjiz Pithawala
>        Filename        : draft-keyupate-bgp-services-01.txt
>        Pages           : 12
>        Date            : 2012-10-22
>
>Abstract:
>   A variety of services, such as NATs, firewalls, or caches, can be
>   embedded in a service provider network or instantiated in data
>   centers attached to the network.  This document proposes extensions
>   to BGP that facilitate discovery of such service instances by
>   interested clients and allows dissemination of service information,
>   such as services capabilities or capacities, throughout the network
>   domain.  The proposed extensions allow for optimal routing of
>   requests to service instances that can optimally serve them.
>
>
>The IETF datatracker status page for this draft is:
>https://datatracker.ietf.org/doc/draft-keyupate-bgp-services
>
>There's also a htmlized version available at:
>http://tools.ietf.org/html/draft-keyupate-bgp-services-01
>
>A diff from the previous version is available at:
>http://www.ietf.org/rfcdiff?url2=draft-keyupate-bgp-services-01
>
>
>Internet-Drafts are also available by anonymous FTP at:
>ftp://ftp.ietf.org/internet-drafts/
>
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