Might try leaving it off and see if that improves things. Just sounds oddly
familiar. Make sure you disable it on all SSIDs to make sure you get a fair
test with it off.
Sent from my iPhone
> On Mar 8, 2017, at 10:56 PM, Jason Cook wrote:
>
> We don’t use it, but yes looking at our SSID con
We don’t use it, but yes looking at our SSID config under QOS AVC is enabled
on. Is this the only place to enable it? Per SSID?
This would seem a good thing to kill off, clearly I should have paid more
attention to that discussion last year looking at history.
Thanks Jake
I’m now cringing a bi
Thanks John. Will do
--
Jason Cook
Technology Services
The University of Adelaide, AUSTRALIA 5005
Ph: +61 8 8313 4800
From: The EDUCAUSE Wireless Issues Constituent Group Listserv
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Watters, John
Sent: Thursday, 9 March 2017 3:29 PM
To:
I hate to ask, but do you have AVC enabled?
Sent from my iPhone
> On Mar 8, 2017, at 9:59 PM, Watters, John wrote:
>
> I'll check the load on our most loaded 8510 HA pair in the morning & get back
> to you. It is about 2300-2500 APs with at least that many concurrent clients.
> Running 8.0.14
Power and distance matter greatly in RF. Could be differences in client TX
power, distance from the wispy, the client card, or even the filters in the
card. Even the same make/model of card can variants in output. Partially why
we can't have calibrated cards in wifi.
2.4GHz will look slightl
I'll check the load on our most loaded 8510 HA pair in the morning & get back
to you. It is about 2300-2500 APs with at least that many concurrent clients.
Running 8.0.140.0 though (we moved there from a 7.6 (126 ?) level and Cisco
recommended that we move to 8.0.140 before going on up to 8.3).
Hi All,
Just wondering if anyone has had an similar experiences to the fun we've had
the last week or so.
Towards the end of last year we moved to new 8510 HA pair on 8.2.121.11 (we had
an issue in testing at the time so grabbed the latest ER release that resolved
a crash bug)
>From 5x5508's i
That is pretty similar, Thanks for pointing it out. Good read.
Yeah that plot I almost photoshopped for product advertisements ☺ not that I’m
suggesting that’s done at all
I wasn’t paying attention to max signal at the time. Not sure on the duty
cycle, It could be just the proximity or perha
Might check this out:
http://revolutionwifi.blogspot.com/2014/08/80211ac-adjacent-channel-interference.html?m=1
There's and image there you should find similar.
Sent from my iPhone
> On Mar 8, 2017, at 4:58 PM, Chuck Enfield wrote:
>
> Cool images. I’ve never tried this. I would have this a
Cool images. I’ve never tried this. I would have this afternoon, but our
operations guys have the spectrum analyzer in another building. I’m a
little surprised to see as nice a plot as you got in the second trace.
Between near field effects and the potential to push the Rx amplifiers into
a
oops, hadn’t seen these responses before sending mine but follows my thoughts
too for first thing to rule out
--
Jason Cook
Technology Services
The University of Adelaide, AUSTRALIA 5005
Ph: +61 8 8313 4800
From: The EDUCAUSE Wireless Issues Constituent Group Listserv
[mailto:WIRELESS-LAN@L
The behavior of your radio could vary. If you’re associated at 2.4GHz the
channel would be based on the AP you’re associated to and duty cycle would
vary with the network activity. If your connection is good you wouldn’t
probe much, if at all. If you’re associated at 5GHz you may occasionally
Just curious, but if my Surface was the cause of the problem and I always used
the same set-up for the Wi-Spy, wouldn’t I always see this signature? This is
something that seems to occur quite randomly so far.
From: The EDUCAUSE Wireless Issues Constituent Group Listserv
[mailto:WIRELESS-LAN@L
Try putting your laptop in airplane mode. My guess is the SpecAn is in very
close proximity to the laptop. That horizontal slope indicates the wispy is
VERY close to a wifi device (aka your surface). That's why it looks like OFDM,
because it is. Getting your wispy close to an AP will look th
Nope, the spectrum analyzer is going directly into a Surface Pro 2.
From: The EDUCAUSE Wireless Issues Constituent Group Listserv
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Jake Snyder
Sent: March-08-17 1:30 PM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] 2.4
That's consistent with what I saw from the Proxims. The radios still
partially work, so the noise is centered around whatever channel they are
set to.
From: Gray, Sean [mailto:sean.gr...@uleth.ca]
Sent: Wednesday, March 08, 2017 3:48 PM
To: Chuck Enfield ; WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
S
Hi Chuck,
I'm going to run the spectrum analyzer on a different client to rule out NIC
issues. Now you mention it we do have a couple of old Proxims, that should have
been powered off a long, long time ago as they are no longer used. So I'll look
into that as well.
Interestingly, I've also see
Highly likely, the majority of our APs are in classrooms, offices and hallways.
I’ll start looking around for such things and see what signatures they give off.
Thanks
Sean
From: The EDUCAUSE Wireless Issues Constituent Group Listserv
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Je
Are you using a USB 3.0 hub?
> On Mar 8, 2017, at 1:23 PM, Jason Heffner wrote:
>
> I’ve seen something similar when running some of the older Cisco controllers.
> If you ruled out everything else and are starting to look for devices causing
> interference I'd check out some of your wireless
I’ve seen something similar when running some of the older Cisco controllers.
If you ruled out everything else and are starting to look for devices causing
interference I'd check out some of your wireless mic systems. We had some
800Mhz that we had to salvage that were causing harmonic distortio
We are seeing many of the congestion issues of 2.4GHz ameliorating themselves
as clients are self-selecting 5GHz. Especially in the higher density
environments where the 2.4GHz congestion was extreme.
On our campus, 5GHz now represents 80% of the data transferred (up from 28% six
years ago), a
Are there any common items near APs? Such as a light with a ballast? You
tend to see A LOT of stuff on 2.4, especially if you're in a more urban
environment.
*--Jeremy L. Gibbs*
Sr. Network Engineer
Utica College IITS
T: (315) 223-2383
F: (315) 792-3814
E: jlgi...@utica.edu
http://www.utica.
I would add that with the forthcoming 802.11ax, improvements are also being
extended to 2.4, meaning the life-span of 2.4 is being reset in some form. As
such, we’ll likely see devices continue in 2.4 for many years, especially those
that benefit from staying anchored to the same AP (less roamin
Anybody using ISE2.2? How's the bug factor?
**
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