Thank you so much for posting this! Ryan H Turner Senior Network Engineer The University of North Carolina at Chapel Hill CB 1150 Chapel Hill, NC 27599 +1 919 445 0113 Office +1 919 274 7926 Mobile
From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Jim Glassford Sent: Wednesday, February 26, 2014 1:02 PM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: Re: [WIRELESS-LAN] Ripley's Believe it or not, wireless edition Just fyi, this was discussed on the resnet mailing list, same as Eric mentioned. 30 Jan 2014 Resnet Forum <resne...@listserv.nd.edu><mailto:resne...@listserv.nd.edu> > We recently disabled OTA updates and the feedback we've gotten from students > has been positive. It appears that was our issue. Thanks for the > suggestions. ~~ > We have seen this issue as well with some of the first generation PS3's. > Some of them we are able to update the code manually to the newest ps3 > version and they will start working. Then others when we updated they still > do not work. Still trying to figure out what the issue maybe.... Doesn't > seem very consistent. best! jim On 2/26/2014 12:47 PM, Eric Rose wrote: Take a look at this link: http://community.arubanetworks.com/t5/Education/PS3-dropping-off-the-network/gpm-p/126499/highlight/true#M565 Once we disabled ARM OTA in the residence halls the older PS3 devices were able to connect wired and wirelessly. "The PS3 (CL917784871-CECH-L01) that we have been working with falls under first generation and its version(s) are CECH-LXX, CECH-KXX and CECH-MXX. WLAN NIC in older PS3s(First Generation) do not handle OTA frames which will be "unrecognized frames" correctly. Ideally, the PS3 should IGNORE these frames and carry on, but it results in connection drop. As it's a client inability at this point to handle such frames, we have successfully worked around this issue by disabling OTA which would be a potential fix as such for client side issue." Eric Rose Network Engineer Salisbury University Office: 410.677.5367 From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Turner, Ryan H Sent: Wednesday, February 26, 2014 12:29 PM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> Subject: [WIRELESS-LAN] Ripley's Believe it or not, wireless edition I am hard pressed to explain this. We've had a good number of reports of PS3s not being able to connect to wired or wireless in our residence halls. This corresponded to a pervasive wireless initiative that resulted in all new switches and Aruba access points installed for about 8,000 resident students. The PS3s would not show any wireless networks available, but more surprisingly, they would not establish a physical connection to switch ports, either. I brought a PS3 back to my office, and completely ignoring the wireless side, attempted to figure out what was happening to the wired side. I connected it, with success, to every type of switch I could find, new and old. I sent it back. We got more reports, and now I was forced to go into the field to look at the issue. I went to a dorm with a troubled unit, reset it, and configured it for a wired connection. It would not establish a link. Could it be a switch negotiation incompatibility issue? I turned off negotiation and manually set the config on both sides to no success. I then used an old hub that I knew would work to bridge the PS3 to our network. No link to the hub from the PS3. At this point, we took the same device and hub to a new location on campus. Booted up the PS3, with it ONLY connected to the hub (the hub wasn't connected to anything), and we got a physical link. I went into network settings to see if I could see wireless networks (I saw a good number). But then it dawned on me that we were in a significantly less dense wireless environment in the environment where the device was working. It should have no effect on the device since we were configured for wired, but I was grasping at straws. Was it possible that the density of Aps (and subsequent beacons) back at the original dorm was throwing the PS3 into a bad state caused the wired port to not work? So, we went back to the dorm, shut down ALL of the access points in the building that were near it, and then booted it up. LINKED FIRST TRY. It linked directly to the switch, and then indirectly through the hub. I started to power back on access points, and about halfway through, the physical link went away. We then reversed course, turned the Aps back off and rebooted the PS3 to verify it would get a link again. It did. I then turned all the Aps back on, to lose the PS3 link. We then rebooted the PS3 with all Aps back on, and it would not establish a link. There was no bridging occurring through the PS3 that would cause a spantree lock (verified). I am at a loss to explain this. Ryan H Turner Senior Network Engineer The University of North Carolina at Chapel Hill CB 1150 Chapel Hill, NC 27599 +1 919 445 0113 Office +1 919 274 7926 Mobile ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
