Good Morning,
I was curious if anyone has run into any throughput issues due to updating to
Windows 10 Creator's Update (Version 1703) - which appeared to be related to
"RSC Received Segment Coalescing)" - which was reported to be fixed in -
KB4022716 - https://communities.intel.com/thread/115898 - more curious how
widespread this potentially is/was and an FYI as this was the first time we had
been aware of this issue.
The issue presented itself on a Windows 10 Laptop with an Intel AC-8260 Adapter
- with speed tests showing .01Mbps Download with 127Mbps Upload (Normal) -
behaved very similarly to a fragmentation issue we previously saw at Remote
Offices (GRE/IPSEC Fragmentation) - resolved with adjusting MTU.
- Proposed Workarounds had been
§ Client-Side - Adjusting the client's MTU to 1400 (this resolved our user's
particular issue) - he appeared to have the KB4022716 update applied.
§ Environment/Controller Wide (Cisco) - Adjusting the MSS Value at the
Controller Level to 1360 from 1363 - https://communities.intel.com/thread/115425
· I saw a previous listserv discussion (attached) - where reminded me
of the behavior but has been resolved by setting the MSS Value to 1250 (New
Cisco Default possibly) - might be a coincidence.
With something broad as "Slow Wifi" - some of the discussions in the TechNet
Discussion won't necessarily be related - but MTU Adjustments, RSC, AC-8260,
corporate environments kept popping up.
- TechNet Discussion -
https://social.technet.microsoft.com/Forums/windows/en-US/27dd19ab-78a2-42fc-accb-34bd949a30a7/windows-10-creators-update-causing-very-slow-wifi?forum=win10itpronetworking
- Windows 10 Creator's Update Wi-Fi Issues -
https://answers.microsoft.com/en-us/windows/forum/windows_10-networking/wifi-issues-with-creators-update/4a20ba4f-33dc-4397-9823-e12dcb2607ba
Christopher Johnson
Wireless Network Engineer
AT Infrastructure Operations & Networking (ION)
Illinois State University
(309) 438-8444
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--- Begin Message ---
We had this same issue. Although I think it was affecting Macbooks originally
and then migrated to Windows a few months later. But yes, it seems to have to
do with the Creators update but TAC said the new default will be 1250 anyway.
Thanks,
--
Curtis K. Larsen
Senior Network Engineer
University of Utah IT/CIS
Office 801-587-1313
________________________________________
From: The EDUCAUSE Wireless Issues Constituent Group Listserv
<WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> on behalf of Gavin Pyle
<gp...@greenriver.edu>
Sent: Thursday, July 6, 2017 9:08 AM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Cisco 3800 Series APs
We recently replaced the APs in one of our buildings with 2802’s and
experienced slow throughput on Windows 10 devices. We had one older 3602 AP in
the building that we didn’t replace and found that when the same clients
connected to it, they didn’t experience any issues. This post on Cisco’s
support
forums<https://supportforums.cisco.com/discussion/13089001/packet-loss-2800-ap>
suggested that modifying the “Global TCP Adjust MSS” setting on the controller
to 1250 may resolve the issue, so we adjusted the MTU on a couple of Windows 10
laptops first to test and it did resolve the issue, so we modified the setting
on the controller.
We’re on WLC 5520, software version 8.3.102.0. We didn’t test with a full
range of devices, however it seemed to only affect Windows 10 devices with the
Creator update. Other devices we tested were iPhones, Android phones, and Mac
Laptops, and they didn’t seem to have any issues.
Gavin Pyle
Network Engineer
Information Technology
Green River College
From: The EDUCAUSE Wireless Issues Constituent Group Listserv
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Jason Watts
Sent: Thursday, July 6, 2017 5:34 AM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Cisco 3800 Series APs
Well that is troubling. We are about to deploy around 200 of them. Is anyone
else experiencing similar issues to this on 2802's?
--
Jason Watts
Pratt Institute, Academic Computing
Senior Network Administrator
Sent from my iPhone
On Jul 6, 2017, at 7:23 AM, Scharloo, Gertjan
<g.schar...@uva.nl<mailto:g.schar...@uva.nl>> wrote:
Hi Bryan,
The University of Amsterdam and Amsterdam University of Applied Sciences are
currently using 2802i Access Points since December 1, 2016 to gain experience
with this new type of Access Point. (Only on the 9th and 10th floors)
The access points have been problematic from the start, and still there are
complaints from end users that we can’t solve or identify properly. The same
users can work without problems on other floors where we have 2702i Access
Points stationed in this property.
We are currently dealing with client disconnections on the floors/buildings
with AP2802i. This disconnection occurs 2-3 hours, sometimes more frequently.
Many of our clients are effected. Another issue which is subpart of this issue
is: the clients are connected but there is no traffic flow. These clients have
laptop from different vendors for example Dell, Apple with different (updated)
drivers. -The users stay connected but cannot transmit any data.
Two months ago, we have started a new software release 8.2.154.17 and we were
hoping to fix our client disconnect issue only with the 2802i AP, but the
problem became worse. We have started a Tac CASE (severity 2)
Regards
Gertjan Scharloo
ICT Consultant
_____
Universiteit van Amsterdam | Hogeschool van Amsterdam
ICT Services
Leeuwenburg | kamer A9.44
Weesperzijde 190 | 1097 DZ Amsterdam
+31 (0)20 525 4885
Mobiel : +31(0) 61013-5880
www.uva.nl<http://www.uva.nl/>
uva.nl/profile/g.scharloo<http://uva.nl/profile/g.scharloo>
Beschikbaar : Ma | - | Wo | Do | Vr |
From: wireless-lan
<WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>>
on behalf of Bryan Ward
<bryan.w...@dartmouth.edu<mailto:bryan.w...@dartmouth.edu>>
Reply-To: wireless-lan
<WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>>
Date: Wednesday, 5 July 2017 at 18:07
To: wireless-lan
<WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>>
Subject: [WIRELESS-LAN] Cisco 3800 Series APs
Couldn’t find a recent discussion on the list archives, so I’ll ask my question.
For those of you that have Cisco 3800 series APs in production, how have they
been working for you recently?
We currently purchase 3700 series APs as our standard for new installs and
replacement of our 3500 series APs, but are now considering switching to the
3800 series.
I heard there were a lot of issues with them at first, but was wondering if
they’re still troublesome now that they’ve been out in the wild for some time.
Also, does anyone currently have issues using Prime to manage them?
Thanks all,
--
Bryan Ward
Network Engineer
Dartmouth College Network Services
603-646-2245
bryan.w...@dartmouth.edu<mailto:bryan.w...@dartmouth.edu>
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********** Participation and subscription information for this EDUCAUSE
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********** Participation and subscription information for this EDUCAUSE
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**********
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