IETF Logo Mail Archive

Re: [v6ops] ipv6 unicast-routing CLI option is mandatory on some hardware

Gert Doering <gert@space.net> Fri, 25 March 2016 18:24 UTC

Return-Path: <gert@Space.Net>
X-Original-To: v6ops@ietfa.amsl.com
Delivered-To: v6ops@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 8669912D627 for <v6ops@ietfa.amsl.com>; Fri, 25 Mar 2016 11:24:08 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.61
X-Spam-Level:
X-Spam-Status: No, score=-2.61 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_LOW=-0.7, T_RP_MATCHES_RCVD=-0.01] autolearn=ham autolearn_force=no
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id WoYKjJbZ79Mv for <v6ops@ietfa.amsl.com>; Fri, 25 Mar 2016 11:24:04 -0700 (PDT)
Received: from mobil.space.net (mobil.space.net [IPv6:2001:608:2:81::67]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 990B112D620 for <v6ops@ietf.org>; Fri, 25 Mar 2016 11:23:57 -0700 (PDT)
X-Original-To: v6ops@ietf.org
Received: from mobil.space.net (localhost [IPv6:::1]) by mobil.space.net (Postfix) with ESMTP id 6B02662ACB for <v6ops@ietf.org>; Fri, 25 Mar 2016 19:23:55 +0100 (CET)
X-SpaceNet-Relay: true
Received: from moebius3.space.net (moebius3.Space.Net [IPv6:2001:608:2:2::250]) by mobil.space.net (Postfix) with ESMTPS id 2098F60397 for <v6ops@ietf.org>; Fri, 25 Mar 2016 19:23:55 +0100 (CET)
Received: (qmail 78216 invoked by uid 1007); 25 Mar 2016 19:23:55 +0100
Date: Fri, 25 Mar 2016 19:23:55 +0100
From: Gert Doering <gert@space.net>
To: Alexandre Petrescu <alexandre.petrescu@gmail.com>
Message-ID: <20160325182355.GC62900@Space.Net>
References: <56BB639E.5010505@si6networks.com> <20160210203411.GH387@DOIT-2NW1MRFY-X.doit.wisc.edu> <56BBD6DB.6020507@gmail.com> <20160211172721.GA15156@DOIT-2NW1MRFY-X.doit.wisc.edu> <8AE0F17B87264D4CAC7DE0AA6C406F45C2D4491A@nkgeml514-mbx.china.huawei.com> <56F55D3D.9050908@gmail.com> <56F56345.20203@gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Disposition: inline
In-Reply-To: <56F56345.20203@gmail.com>
X-NCC-RegID: de.space
User-Agent: Mutt/1.5.23 (2014-03-12)
Archived-At: <http://mailarchive.ietf.org/arch/msg/v6ops/zE-a2km8TMXbygOxf5rw-ZLy1Iw>
Cc: v6ops@ietf.org
Subject: Re: [v6ops] ipv6 unicast-routing CLI option is mandatory on some hardware
X-BeenThere: v6ops@ietf.org
X-Mailman-Version: 2.1.17
Precedence: list
List-Id: v6ops discussion list <v6ops.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/v6ops>, <mailto:v6ops-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/v6ops/>
List-Post: <mailto:v6ops@ietf.org>
List-Help: <mailto:v6ops-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/v6ops>, <mailto:v6ops-request@ietf.org?subject=subscribe>
X-List-Received-Date: Fri, 25 Mar 2016 18:24:08 -0000

Hi,

On Fri, Mar 25, 2016 at 05:11:49PM +0100, Alexandre Petrescu wrote:
> Contrary to IPv4, on some routers it is mandatory to say "ipv6 
> unicast-routing" otherwise routing is not working.  In IPv4 you dont 
> have to say that, but in IPv6 yes.
> 
> I guess this is a negative side effect of the importance multicast has 
> in IPv6.

This is just a matter of defaults.  Back in the day, you had to turn
on "ip unicast-routing" as well - if not set, the device would be a 
host, not a router (read: not forward packets).

> In a perspective of IPv6 now everywhere, s/IPv6/IP/g in all CLI.

No, because that does not make sense - but s/ip/ipv4/ (as IOS XR does)
is reasonable.

Gert Doering
        -- NetMaster
-- 
have you enabled IPv6 on something today...?

SpaceNet AG                        Vorstand: Sebastian v. Bomhard
Joseph-Dollinger-Bogen 14          Aufsichtsratsvors.: A. Grundner-Culemann
D-80807 Muenchen                   HRB: 136055 (AG Muenchen)
Tel: +49 (0)89/32356-444           USt-IdNr.: DE813185279

v2.23.0 | Report a Bug | By Email