Re: [lisp] LISP EID Block Size

Dino Farinacci <farinacci@gmail.com> Sun, 03 November 2013 23:06 UTC

Return-Path: <farinacci@gmail.com>
X-Original-To: lisp@ietfa.amsl.com
Delivered-To: lisp@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 3AB6411E824A for <lisp@ietfa.amsl.com>; Sun, 3 Nov 2013 15:06:43 -0800 (PST)
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 enKre75TEzdF for <lisp@ietfa.amsl.com>; Sun, 3 Nov 2013 15:06:42 -0800 (PST)
Received: from mail-pa0-x22e.google.com (mail-pa0-x22e.google.com [IPv6:2607:f8b0:400e:c03::22e]) by ietfa.amsl.com (Postfix) with ESMTP id 8354C21E80FF for <lisp@ietf.org>; Sun, 3 Nov 2013 15:06:41 -0800 (PST)
Received: by mail-pa0-f46.google.com with SMTP id rd3so6183751pab.5 for <lisp@ietf.org>; Sun, 03 Nov 2013 15:06:41 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=content-type:mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=krT4Le6XrhHBxuNtpcunTA+jmb7zBcvzxmags2XOhjo=; b=Xykkw9HwpwfghZ9H39O9JJXDsXHfh09RQ3cMRFxKVxKt9Lh8dcv2CDdqEzsStCbKOs tvQqEYmRbMyUMLnOMmHO7NIteMrv7ay0glmGoJ9xL9CrdCqgjNkAyEAPygb3oQ4m5VA3 g9e0Bj4MTIcvZTDWP54/rI4zeLnc4E4cwalknNxcs4YFWQ5cg+eNTYsTjZbsThCSgbOy THWslPezFj3gapQgGEx21Aj7FZ3SK0vOkHEb8ThgmFulg1xPff3DbPORWV1X+GkpmLB7 aLIkBWw2/r1ty/WzPEpEI5dtrT87yMqVrnSeVD7xYTRoV3HFh3JwYIcTTbcYf5aezw4e dEVw==
X-Received: by 10.66.144.102 with SMTP id sl6mr14579035pab.96.1383520001109; Sun, 03 Nov 2013 15:06:41 -0800 (PST)
Received: from [10.45.166.251] ([156.39.10.22]) by mx.google.com with ESMTPSA id uw6sm24250628pbc.8.2013.11.03.15.06.40 for <multiple recipients> (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Sun, 03 Nov 2013 15:06:40 -0800 (PST)
Content-Type: text/plain; charset=windows-1252
Mime-Version: 1.0 (Mac OS X Mail 7.0 \(1816\))
From: Dino Farinacci <farinacci@gmail.com>
In-Reply-To: <E6D8346C-632C-4A7A-ACFC-EAFBF74E428F@gigix.net>
Date: Sun, 3 Nov 2013 15:06:39 -0800
Content-Transfer-Encoding: quoted-printable
Message-Id: <59E678A4-ADD0-493C-A7B7-66BCAFDCCADE@gmail.com>
References: <20131031151830.55F9618C168@mercury.lcs.mit.edu> <EA0CEAB9-BD0F-4278-BE30-6D6DB7E7B624@steffann.nl> <FC33A2A0-45EA-424B-8F37-D479131AEDD4@gmail.com> <87ED0701-79BC-4BA4-97F0-054EABAAB696@steffann.nl> <E6D8346C-632C-4A7A-ACFC-EAFBF74E428F@gigix.net>
To: Luigi Iannone <ggx@gigix.net>
X-Mailer: Apple Mail (2.1816)
Cc: Noel Chiappa <jnc@mercury.lcs.mit.edu>, LISP mailing list list <lisp@ietf.org>
Subject: Re: [lisp] LISP EID Block Size
X-BeenThere: lisp@ietf.org
X-Mailman-Version: 2.1.12
Precedence: list
List-Id: List for the discussion of the Locator/ID Separation Protocol <lisp.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/lisp>, <mailto:lisp-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/lisp>
List-Post: <mailto:lisp@ietf.org>
List-Help: <mailto:lisp-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/lisp>, <mailto:lisp-request@ietf.org?subject=subscribe>
X-List-Received-Date: Sun, 03 Nov 2013 23:06:43 -0000

> That is not correct. With an EID block you would have:
> 
> Address in special prefix == address is an EID
> 
> Address not in special prefix != is not an EID

Luigi, I would say if Address is not a special prefix, it may be an EID but you can only find out by doing a mapping database lookup.

> Basically if it is n the special block you know it is an EID, if it is not in the special block you have no idea and you have to check.

Right, true.

Dino