I don't know of any client side tools to troubleshoot, but there could be. Lots can change in 18 months. Could be someone bringing in a mifi, a smart phone with tethering enabled. As you've seen, it is going to be hard to track down without some sort of monitoring. Does the meru detect rogue aps?
From: David Lum [mailto:david....@nwea.org] Sent: Tuesday, August 07, 2012 11:57 AM To: NT System Admin Issues Subject: RE: Troubleshooting wireless Here's the dumb thing: We know the root cause is RF interference. Our vendor is Meru and they did an evaluation & scan of our environment before we moved into the building 18 months ago and based on what they found they recommended 25 dual-radio AP's. Our company decided that was too expensive and went with 25 single radio AP's, effectively we're a victim of our own cost cutting. Meru is very helpful with the localized troubleshooting, but I am finding it difficult to reproduce the issue at the moment they call as our users typically use wireless for the hour or so they have meetings, and they don't always have problem each time they use wireless. Is there any client side troubleshooting ideas I'm overlooking - as in, how can you? It's like having a fleet of cars that just about every time you take one to a mechanic the symptoms stop. Dave From: Glen Johnson [mailto:gjohn...@vhcc.edu]<mailto:[mailto:gjohn...@vhcc.edu]> Sent: Tuesday, August 07, 2012 4:23 AM To: NT System Admin Issues Subject: RE: Troubleshooting wireless Do you have an android device handy? If so, install the wifi analyzer app and have a look around. Could be a rogue ap you don't know about, overlapping channel coverage, interference from neighbors or any number of things. Until you know what signals are present, you will just be guessing at what the problem might be. From: David Lum [mailto:david....@nwea.org]<mailto:[mailto:david....@nwea.org]> Sent: Monday, August 06, 2012 5:35 PM To: NT System Admin Issues Subject: Troubleshooting wireless We have a wireless system here that spans five floors and we have 25 AP's. For over a year I haven't been able to get a good handle on how to adequately troubleshoot this. For a while I had several older laptops spread across a few AP's and would send a ping test to and I would have some software monitoring that. Sometimes the laptops would stop responding to ping even though other systems around it could connect Sometimes the opposite was also true Most users use wireless just in our conference rooms. Some users never have a problem, other users it sometimes works and sometimes doesn't. Drilling down we are finding nothing in common - For example some Dell D6240's are fine, others aren't, all of them are built from the same image. We have probably 6-7 models of laptops, some have XP, some Win7. It's killing me that there seems to be only about 5% of the users reporting problems to be able to reproduce the problem at any given moment. In fact not 10 minutes ago I had a user tell me wireless quit working for them in a specific area. I take a laptop over and meet the user in the "dead" spot, and of course it now worked flawlessly for her and I. The wireless vendor came out months ago and said the 2.4GHz spectrum in our area is very noisy with other RF and that if we moved everyone to 5GHz things will be much better - problem is not all of our laptops area 5GHz capable and our wireless AP's are not dual radio (they can do 2.4 OR 5GHz but not both). David Lum Systems Engineer // NWEATM Office 503.548.5229 // Cell (voice/text) 503.267.9764 ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com<mailto:listmana...@lyris.sunbeltsoftware.com> with the body: unsubscribe ntsysadmin ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com<mailto:listmana...@lyris.sunbeltsoftware.com> with the body: unsubscribe ntsysadmin ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com<mailto:listmana...@lyris.sunbeltsoftware.com> with the body: unsubscribe ntsysadmin ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com with the body: unsubscribe ntsysadmin
