[91attendees] Wireless issues with Intel Centrino cards and the IETF APs
Chris Elliott <chelliot@pobox.com> Mon, 10 November 2014 23:54 UTC
Return-Path: <chelliot@gmail.com>
X-Original-To: 91attendees@ietfa.amsl.com
Delivered-To: 91attendees@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1])
by ietfa.amsl.com (Postfix) with ESMTP id 5DA6E1AD015
for <91attendees@ietfa.amsl.com>; Mon, 10 Nov 2014 15:54:27 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.277
X-Spam-Level:
X-Spam-Status: No, score=-1.277 tagged_above=-999 required=5
tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1,
FM_FORGED_GMAIL=0.622, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001,
SPF_PASS=-0.001] autolearn=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 U97jkuLvFs7E for <91attendees@ietfa.amsl.com>;
Mon, 10 Nov 2014 15:54:25 -0800 (PST)
Received: from mail-yh0-x235.google.com (mail-yh0-x235.google.com
[IPv6:2607:f8b0:4002:c01::235])
(using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits))
(No client certificate requested)
by ietfa.amsl.com (Postfix) with ESMTPS id B1BFD1A86FC
for <91attendees@ietf.org>; Mon, 10 Nov 2014 15:54:25 -0800 (PST)
Received: by mail-yh0-f53.google.com with SMTP id a41so2700858yho.26
for <91attendees@ietf.org>; Mon, 10 Nov 2014 15:54:25 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113;
h=mime-version:reply-to:sender:from:date:message-id:subject:to
:content-type; bh=IH3nCl7IeQuykiwPd3vB/OoYi+QGr6SAn42uFOrM7kI=;
b=VZeQ91s/jv2bKzy1pszLATQtlCun0Iv7tfisG9Z8pfYJSYZp5APa0TsBNvodNdkQTH
7TtAxQjLDdO5fvp13JoUiAIjuUNLfUl151ATyPbt+WL26A7oMQP+o/5AjR9/EEf2Zzr2
Ks5nFJtlBfzXrhXwPy6Bg/urb4wm/EVztfKkDad7uoF7JW2K3XaDg0fw++uLv4lFzX4h
oWSes2gb2tfaNUOS2wtaHe9D6UXcRamOzI4Nu53sQqa3PuF6hEslmTc1/tGj2Ddsi+0D
UrPCPIaKKNQO5BpT5vPnWK9LjLG9oaDpN6j6pEV+zd6ljuk8oH30IVajbjBpnDKnQSJn
bnBg==
X-Received: by 10.236.13.46 with SMTP id a34mr34785619yha.10.1415663664992;
Mon, 10 Nov 2014 15:54:24 -0800 (PST)
MIME-Version: 1.0
Sender: chelliot@gmail.com
Received: by 10.170.222.86 with HTTP; Mon, 10 Nov 2014 15:54:04 -0800 (PST)
From: Chris Elliott <chelliot@pobox.com>
Date: Mon, 10 Nov 2014 13:54:04 -1000
X-Google-Sender-Auth: Nq1sj7RiX17kT5YrqgtAmg2DT10
Message-ID: <CAO_Rpc+USbuNFdFTn5z-YnsEDMifrYmWSj3Ga3ggb+zoBtW8Ng@mail.gmail.com>
To: "91attendees@ietf.org" <91attendees@ietf.org>
Content-Type: multipart/alternative; boundary=001a11c3dc3adf9a09050789e1f4
Archived-At: http://mailarchive.ietf.org/arch/msg/91attendees/33DqEpHGPgt_j0GxdvnuzEdAU9A
Subject: [91attendees] Wireless issues with Intel Centrino cards and the
IETF APs
X-BeenThere: 91attendees@ietf.org
X-Mailman-Version: 2.1.15
Precedence: list
Reply-To: chelliot@pobox.com
List-Id: "Mailing list of IETF 91 attendees that have opted in on this list."
<91attendees.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/91attendees>,
<mailto:91attendees-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/91attendees/>
List-Post: <mailto:91attendees@ietf.org>
List-Help: <mailto:91attendees-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/91attendees>,
<mailto:91attendees-request@ietf.org?subject=subscribe>
X-List-Received-Date: Mon, 10 Nov 2014 23:54:27 -0000
All, If you are having issues using the IETF wireless networks, but it works if you use the ietf-hotel, ietf-public, or ietf-public-a SSIDs, please read further. Please try using the new SSID called "ietf-2.4only". This may solve your problem. If you continue to have problems please report this either by opening a ticket or visiting the help desk in the terminal room. See https://tickets.meeting.ietf.org/ and https://tickets.meeting.ietf.org/wiki/IETF91network for more information on getting help. Details: We have identified a compatibility issue with the Cisco APs and certain wireless cards. At this point, all clients affected have been using Intel Centrino 6xxx AGN cards (where xxx is 200,300,310, and possibly others), and a Cisco bug ID we've found seems to confirm this. The bug is fixed in some Cisco images and APs, but it does not appear to be fixed for the APs we are using here, or we have a new bug. We are actively working on this issue with Cisco and hope to get a fix soon. In the meantime, we have implemented a workaround. We have disabled WMM (Wi-Fi Multimedia) on the 2.4Ghz radio only. We have done this only on this radio, and not on the 5Ghz radio as disabling this extension disables 802.11n and 802.11ac data rates, and disables MIMO multiple simultaneous streams, and will result in lower performance. We have also implemented a new SSID, called "ietf-2.4only" that will allow clients to select the 2.4Ghz radio. Clients can also disable the 802.11n and ac data rates on their client card and they Enjoy! Chris. -- Chris Elliott chelliot@pobox.com
- [91attendees] Wireless issues with Intel Centrino… Chris Elliott
- Re: [91attendees] Wireless issues with Intel Cent… Chris Elliott