IETF Logo Mail Archive

Re: [GROW] draft-ietf-grow-simple-va

Robert Raszuk <robert@raszuk.net> Tue, 01 May 2012 07:01 UTC

Return-Path: <robert@raszuk.net>
X-Original-To: grow@ietfa.amsl.com
Delivered-To: grow@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id DF09621F87CD for <grow@ietfa.amsl.com>; Tue, 1 May 2012 00:01:50 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.599
X-Spam-Level:
X-Spam-Status: No, score=-2.599 tagged_above=-999 required=5 tests=[BAYES_00=-2.599]
Received: from mail.ietf.org ([12.22.58.30]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id S-sVOkz39oCk for <grow@ietfa.amsl.com>; Tue, 1 May 2012 00:01:50 -0700 (PDT)
Received: from mail1310.opentransfer.com (mail1310.opentransfer.com [76.162.254.103]) by ietfa.amsl.com (Postfix) with ESMTP id 0202A21F87CC for <grow@ietf.org>; Tue, 1 May 2012 00:01:49 -0700 (PDT)
Received: (qmail 20383 invoked by uid 399); 1 May 2012 07:01:44 -0000
Received: from unknown (HELO ?192.168.1.57?) (pbs:robert@raszuk.net@83.28.249.78) by mail1310.opentransfer.com with ESMTPM; 1 May 2012 07:01:44 -0000
X-Originating-IP: 83.28.249.78
Message-ID: <4F9F8A55.2050203@raszuk.net>
Date: Tue, 01 May 2012 09:01:41 +0200
From: Robert Raszuk <robert@raszuk.net>
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:12.0) Gecko/20120420 Thunderbird/12.0
MIME-Version: 1.0
To: Jakob Heitz <jakob.heitz@ericsson.com>
References: <13205C286662DE4387D9AF3AC30EF456D76AB92C3B@EMBX01-WF.jnpr.net> <4F9BCB90.9090000@raszuk.net> <4F9C80BA.9040003@raszuk.net> <13205C286662DE4387D9AF3AC30EF456D76AD2906F@EMBX01-WF.jnpr.net> <4F9DA2A9.7070301@raszuk.net> <13205C286662DE4387D9AF3AC30EF456D76AD29113@EMBX01-WF.jnpr.net> <4F9E27CC.8070507@raszuk.net> <13205C286662DE4387D9AF3AC30EF456D76AD297C7@EMBX01-WF.jnpr.net> <7309FCBCAE981B43ABBE69B31C8D213921BE145B07@EUSAACMS0701.eamcs.ericsson.se> <4F9EEF87.1050504@raszuk.net> <7309FCBCAE981B43ABBE69B31C8D213921BE145CC4@EUSAACMS0701.eamcs.ericsson.se>
In-Reply-To: <7309FCBCAE981B43ABBE69B31C8D213921BE145CC4@EUSAACMS0701.eamcs.ericsson.se>
Content-Type: text/plain; charset="ISO-8859-1"; format="flowed"
Content-Transfer-Encoding: 7bit
Cc: "grow@ietf.org" <grow@ietf.org>, "iesg@ietf.org" <iesg@ietf.org>
Subject: Re: [GROW] draft-ietf-grow-simple-va
X-BeenThere: grow@ietf.org
X-Mailman-Version: 2.1.12
Precedence: list
Reply-To: robert@raszuk.net
List-Id: Grow Working Group Mailing List <grow.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/grow>, <mailto:grow-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/grow>
List-Post: <mailto:grow@ietf.org>
List-Help: <mailto:grow-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/grow>, <mailto:grow-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 01 May 2012 07:01:51 -0000

> On Monday, April 30, 2012 1:01 PM, Robert Raszuk<mailto:robert@raszuk.net>  wrote:
>
>> Disconnect ! Simple-va does not remove routes from RIB. It suppresses
>> overlapping less specific one.
>
> quote from the draft
> ...suppress certain routes from being installed in RIB and FIB tables.
>
> If they are "suppressed from being installed in RIB"
> then they can't be used to resolve nexthops or to be redistributed.

"certain" is the key there. The default route case is a special case as 
explained in the other email.

For any other suppressed route the resolution result will be the same if 
you are resolving via less specific which by definition will not be 
suppressed.

>> However redistribution of BGP to other protocols is
>> usually not that good of an idea
>
> Redistribution of some selected BGP routes does occur.
> Not just into IGP and LDP, but also into applications.

Sure. That's why you have ability to exclude some routes from 
suppression. In fact you can apply the exact very same policy which does 
redistribution to the function which does the suppression.

Best,
R.

v2.23.0 | Report a Bug | By Email