IETF Logo Mail Archive

Re: [quicwg/base-drafts] MSS and MTU (#592)

Oknet <notifications@github.com> Mon, 13 November 2017 11:40 UTC

Return-Path: <bounces+848413-a050-quic-issues=ietf.org@sgmail.github.com>
X-Original-To: quic-issues@ietfa.amsl.com
Delivered-To: quic-issues@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 494AB126CD8 for <quic-issues@ietfa.amsl.com>; Mon, 13 Nov 2017 03:40:31 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -4.799
X-Spam-Level:
X-Spam-Status: No, score=-4.799 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HTML_MESSAGE=0.001, RCVD_IN_MSPIKE_H2=-2.8, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=github.com
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 v7Z-hq-tk8gD for <quic-issues@ietfa.amsl.com>; Mon, 13 Nov 2017 03:40:29 -0800 (PST)
Received: from o6.sgmail.github.com (o6.sgmail.github.com [192.254.113.101]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 9DFD2124BFA for <quic-issues@ietf.org>; Mon, 13 Nov 2017 03:40:29 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; d=github.com; h=from:reply-to:to:cc:in-reply-to:references:subject:mime-version:content-type:content-transfer-encoding:list-id:list-archive:list-post:list-unsubscribe; s=s20150108; bh=HBxsjujFTNJVuGBS6zWCM14PM60=; b=XDrtVqUw5LW5F98C wZrjRYw5Syts5vpuydcXa1CfheC/3zcBcCVQUL8AykUoA04QVmopzNJfxVYUF9RG 6ykKv+lfp/NyqYS3t3V+iYIx6d9CPwSlmLDSIb1vPj/y4fACHXisa9UEKWqssW5E wv4jAizAQKGyrfKUn+o2gcM/YBE=
Received: by filter0046p1las1.sendgrid.net with SMTP id filter0046p1las1-9056-5A0984AC-C 2017-11-13 11:40:28.333165462 +0000 UTC
Received: from github-smtp2b-ext-cp1-prd.iad.github.net (github-smtp2b-ext-cp1-prd.iad.github.net [192.30.253.17]) by ismtpd0008p1iad1.sendgrid.net (SG) with ESMTP id AsMVJ5fkTF-0_cJqLtmelg for <quic-issues@ietf.org>; Mon, 13 Nov 2017 11:40:28.083 +0000 (UTC)
Date: Mon, 13 Nov 2017 11:40:28 +0000
From: Oknet <notifications@github.com>
Reply-To: quicwg/base-drafts <reply+0166e4abc8f1ef9dc25805416be151ee510a8084b3ea164d92cf00000001162146ab92a169ce0df07cbd@reply.github.com>
To: quicwg/base-drafts <base-drafts@noreply.github.com>
Cc: Subscribed <subscribed@noreply.github.com>
Message-ID: <quicwg/base-drafts/issues/592/343894292@github.com>
In-Reply-To: <quicwg/base-drafts/issues/592@github.com>
References: <quicwg/base-drafts/issues/592@github.com>
Subject: Re: [quicwg/base-drafts] MSS and MTU (#592)
Mime-Version: 1.0
Content-Type: multipart/alternative; boundary="--==_mimepart_5a0984abf2121_24b23ff699c26f302653d0"; charset="UTF-8"
Content-Transfer-Encoding: 7bit
Precedence: list
X-GitHub-Sender: oknet
X-GitHub-Recipient: quic-issues
X-GitHub-Reason: subscribed
X-Auto-Response-Suppress: All
X-GitHub-Recipient-Address: quic-issues@ietf.org
tracking:
X-SG-EID: l64QuQ2uJCcEyUykJbxN122A6QRmEpucztpreh3Pak2WcfX/31QmrRNszma6Ix1whY2zuSDnTWExno 8yGTPAx+BWwry+EzcLHPO7bZ2W65dbfHMT34icPYiX68yXO9xH06k2ATnQW25bqIgq95iRIi+xmkKL iVxqAgJCy8rtOZ33vVAd0445c1yukvy4ljSjMfgzm4np5VHmQV9njvx71Q==
Archived-At: <https://mailarchive.ietf.org/arch/msg/quic-issues/hqXs9Xr529tr8G__lWipswzEMxo>
X-BeenThere: quic-issues@ietf.org
X-Mailman-Version: 2.1.22
List-Id: Notification list for GitHub issues related to the QUIC WG <quic-issues.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/quic-issues>, <mailto:quic-issues-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/quic-issues/>
List-Post: <mailto:quic-issues@ietf.org>
List-Help: <mailto:quic-issues-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/quic-issues>, <mailto:quic-issues-request@ietf.org?subject=subscribe>
X-List-Received-Date: Mon, 13 Nov 2017 11:40:31 -0000

According to https://quicwg.github.io/base-drafts/draft-ietf-quic-transport.html#rfc.section.9

```
In the absence of these mechanisms, QUIC endpoints SHOULD NOT send IP packets larger than 1280 octets. Assuming the minimum IP header size, this results in a QUIC packet size of 1232 octets for IPv6 and 1252 octets for IPv4.
QUIC endpoints that implement any kind of PMTU discovery SHOULD maintain an estimate for each combination of local and remote IP addresses (as each pairing could have a different maximum MTU in the path).
QUIC depends on the network path supporting a MTU of at least 1280 octets. This is the IPv6 minimum and therefore also supported by most modern IPv4 networks. An endpoint MUST NOT reduce their MTU below this number, even if it receives signals that indicate a smaller limit might exist.
```

-- 
You are receiving this because you are subscribed to this thread.
Reply to this email directly or view it on GitHub:
https://github.com/quicwg/base-drafts/issues/592#issuecomment-343894292

v2.39.1 | Report a Bug | By Email | System Status