ISE 2.2 How's it going

Anybody using ISE2.2? How's the bug factor? ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/discuss.

Re: [WIRELESS-LAN] 2.4 GHz Interference

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

Re: [WIRELESS-LAN] Cisco 8510 8.2 Load Issues

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

Re: [WIRELESS-LAN] 2.4 GHz Interference

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

RE: Cisco 8510 8.2 Load Issues

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:

RE: [WIRELESS-LAN] Cisco 8510 8.2 Load Issues

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

RE: [WIRELESS-LAN] 2.4 GHz Interference

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

Cisco 8510 8.2 Load Issues

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

Re: [WIRELESS-LAN] Cisco 8510 8.2 Load Issues

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,

Re: [WIRELESS-LAN] 2.4 vs 5

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

Re: Cisco 8510 8.2 Load Issues

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).

Re: [WIRELESS-LAN] 2.4 GHz Interference

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

Re: [WIRELESS-LAN] 2.4 vs 5

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),

Re: [WIRELESS-LAN] 2.4 GHz Interference

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

RE: [WIRELESS-LAN] 2.4 GHz Interference

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

RE: [WIRELESS-LAN] 2.4 GHz Interference

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 ;

RE: [WIRELESS-LAN] 2.4 GHz Interference

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

RE: [WIRELESS-LAN] 2.4 GHz Interference

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

Re: [WIRELESS-LAN] 2.4 GHz Interference

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

RE: [WIRELESS-LAN] 2.4 GHz Interference

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

RE: [WIRELESS-LAN] 2.4 GHz Interference

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

RE: [WIRELESS-LAN] 2.4 GHz Interference

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

RE: [WIRELESS-LAN] 2.4 GHz Interference

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