IETF Logo Mail Archive

Re: [BEHAVE] Home NAPT44 - How many ports?

Michael Richardson <mcr+ietf@sandelman.ca> Wed, 05 June 2013 16:24 UTC

Return-Path: <mcr@sandelman.ca>
X-Original-To: behave@ietfa.amsl.com
Delivered-To: behave@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 08DE921F9BAF; Wed, 5 Jun 2013 09:24:31 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.999
X-Spam-Level:
X-Spam-Status: No, score=-1.999 tagged_above=-999 required=5 tests=[AWL=-0.600, BAYES_00=-2.599, J_CHICKENPOX_33=0.6, J_CHICKENPOX_83=0.6]
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 N6WUJ3Alrsvn; Wed, 5 Jun 2013 09:24:30 -0700 (PDT)
Received: from tuna.sandelman.ca (tuna.sandelman.ca [IPv6:2607:f0b0:f:3::184]) by ietfa.amsl.com (Postfix) with ESMTP id 14AE721F9BA8; Wed, 5 Jun 2013 09:24:29 -0700 (PDT)
Received: from sandelman.ca (obiwan.sandelman.ca [IPv6:2607:f0b0:f:2::247]) by tuna.sandelman.ca (Postfix) with ESMTP id D361E2017F; Wed, 5 Jun 2013 12:37:21 -0400 (EDT)
Received: by sandelman.ca (Postfix, from userid 179) id 7B08C63A8C; Wed, 5 Jun 2013 12:23:35 -0400 (EDT)
Received: from sandelman.ca (localhost [127.0.0.1]) by sandelman.ca (Postfix) with ESMTP id 3D71E63A5E; Wed, 5 Jun 2013 12:23:35 -0400 (EDT)
From: Michael Richardson <mcr+ietf@sandelman.ca>
To: "v6ops@ietf.org" <v6ops@ietf.org>, "Reinaldo Penno (repenno)" <repenno@cisco.com>
In-Reply-To: <45A697A8FFD7CF48BCF2BE7E106F0604090A0972@xmb-rcd-x04.cisco.com>
References: <45A697A8FFD7CF48BCF2BE7E106F0604090A0972@xmb-rcd-x04.cisco.com>
X-Mailer: MH-E 8.3; nmh 1.3-dev; XEmacs 21.4 (patch 22)
X-Face: $\n1pF)h^`}$H>Hk{L"x@)JS7<%Az}5RyS@k9X%29-lHB$Ti.V>2bi.~ehC0; <'$9xN5Ub# z!G,p`nR&p7Fz@^UXIn156S8.~^@MJ*mMsD7=QFeq%AL4m<nPbLgmtKK-5dC@#:k
MIME-Version: 1.0
Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha1; protocol="application/pgp-signature"
Date: Wed, 05 Jun 2013 12:23:35 -0400
Message-ID: <20115.1370449415@sandelman.ca>
Sender: mcr@sandelman.ca
Cc: "Softwires-wg list \(softwires@ietf.org\)" <softwires@ietf.org>, "Poscic, Kristian \(Kristian\)" <kristian.poscic@alcatel-lucent.com>, "behave@ietf.org" <behave@ietf.org>, "Erik Kline \(ek@google.com\)" <ek@google.com>, "Rajiv Asati \(rajiva\)" <rajiva@cisco.com>
Subject: Re: [BEHAVE] Home NAPT44 - How many ports?
X-BeenThere: behave@ietf.org
X-Mailman-Version: 2.1.12
Precedence: list
List-Id: mailing list of BEHAVE IETF WG <behave.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/behave>, <mailto:behave-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/behave>
List-Post: <mailto:behave@ietf.org>
List-Help: <mailto:behave-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/behave>, <mailto:behave-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 05 Jun 2013 16:24:31 -0000

>>>>> "repenno" == repenno  <Reinaldo> writes:
    repenno> On the other hand, as Rajiv captured,the number of
    repenno> UDP sessions can be much larger than the number of
    repenno> TCP. Because the way 
    repenno> dynamic webpages are constructed today, there are sometimes
    repenno> literally 100s 
    repenno> of DNS requests to download a single page.

If one is doing CGN, wouldn't it be reasonable to point customers' at 
a recursive DNS server with an interface inside the CGN?

This seems to also suggest that having a *caching* recursive DNS(SEC,
HOMENET+, mDNS+) server inside the customer router is also a big win.

-- 
]               Never tell me the odds!                 | ipv6 mesh networks [ 
]   Michael Richardson, Sandelman Software Works        | network architect  [ 
]     mcr@sandelman.ca  http://www.sandelman.ca/        |   ruby on rails    [

v2.2.0 | Report a Bug | By Email