Hi, We've seen this where clients will rate-shift down, drop out and then reconnect. We're also investigating an issue where a client will go 'dead'; the device and the WLC both claim the device is connected but you can't load pages/ping anything etc. The workaround is to simply reconnect.
Unfortunately we haven't spent enough time with a client device that's been broken long enough to investigate further. We've seen this on 1131, 3500 and 3600 series APs. We're on a 7.2 engineering release but are planning for 7.5. Tristan --- Tristan Gulyas [email protected] Wireless Network Engineer M: +61 403224484 eSolutions division P: +61 3 9902 9092 Building 205 Monash University 3800 Australia On 05/09/2013, at 5:42 AM, Jeff Obrizok <[email protected]> wrote: > Has anyone else that installed 3602i/e’s experienced similar issues where > wireless clients are having difficulty maintaining a wireless connection? > > Thanks, > Jeff > > &nbs p; > From: The EDUCAUSE Wireless Issues Constituent Group Listserv > <[email protected]> [mailto:The EDUCAUSE Wireless Issues > Constituent Group Listserv <[email protected]>] On Behalf Of > Paul Sedy <[email protected]> > Sent: Wednesday, September 04, 2013 1:42 PM > To: [email protected] > Subject: Re: [WIRELESS-LAN] What Cisco WLAN controller code are you running? > > We are currently running 7.4.100.60 on a 5508. Over the summer, we actually > introduced some new 3602i APs into our environment as well. > > Everything was working well until our students returned and placed a more > significant load on system. At that point, many w i ndows clients seemed to > have difficulty maintaining a connection. > > After further investigation, and tinkering around with a few settings as well > as a couple of TAC calls, we decided to remove the 3602i APs and swap them > out for 3502i APs to see what impact it would have. > > As soon as we did so, the client issues were resolved. I would be interested > to hear how other folks are doing on 7.5. > > Paul Sedy > The Master's College > Director of IT Operations > 21726 Placerita Canyon Rd, Santa Clarita, CA 91321 > 661.362.2340 | [email protected] > > -----Original Message----- > From: The EDUCAUSE Wireless Issues Constituent Group Listserv > [mailto:[email protected]] On Behalf Of Eric T. Barnett > Sent: Wednesday, September 04, 2013 8:06 AM > To: [email protected] < br>Subject: Re: [WIRELESS-LAN] What > Cisco WLAN controller code are you running? > > We're running 7.5 and so far it's the most stable of any code I've run in > ages. I've had problems with my 5508 rebooting spontaneously for a long time > on several different code versions. I've been running for 28 days now which > is longer than I've seen in a while. No major bugs that I'm aware of > currently short of the new mDNS discovery by the APs, but I'm working with > the engineers on that one. > > Regards, > > Eric Barnett > Senior Network Engineer/Wireless Administrator Information and Technology > Services Arkansas State University > (870) 680-4243 > http://wireless.astate.edu > > > > -----Original Message----- > From: The EDUCAUSE Wireless Issues Constituent Group Listserv > [mailto:[email protected]] On Behalf Of Tristan Gulyas > Sent: Thursday, Augu s t 29, 2013 7:25 PM > To: [email protected] > Subject: Re: [WIRELESS-LAN] What Cisco WLAN controller code are you running? > > Hi, > > We're running an engineering variant of 7.2.113.0 to resolve some issues we > were having with AP stability. > > We're looking into 7.5 for 802.11ac support. Is anyone running 7.5 out there > or should we wait? > > Tristan > > On 30/08/2013, at 4:19 AM, Philip Theruvakattil < [email protected]> > wrote: > > > We upgraded our 5508 controllers to 7.4.110.0 code a couple of weeks ago, > > primarily to take advantage of the mDNS features. > > > > No reported problems so far but the real test will be when students get > > back. > > > > Had issues with mDNS/bonjour. From the iPads could see the AppleTVs but not > > from iPhones. From iPads could not mirror to any AppleTV. Opened a TA C > > case and issue was resolved by adding AirTunes as a service name - see > > attached screenshot. > > > > We have about 25+ AppleTV (wired) and all can now be mirrored to, from two > > different WLANs. > > > > Phil > > > > -----Original Message----- > > From: The EDUCAUSE Wireless Issues Constituent Group Listserv > > [mailto:[email protected]] On Behalf Of Rick Coloccia, Jr. > > Sent: Thursday, August 29, 2013 1:42 PM > > To: [email protected] > > Subject: Re: [WIRELESS-LAN] What Cisco WLAN controller code are you > > running? > > > > On 7.4.100.60, we can get most bonjour/mDNS traffic from wireless sources > > to wireless clients. > > > > On 7.4.110.0, very little seems to get through. > > > > Nothing is reliable. > > > > We can make airplay work from appletvs t o ios devices but not phones > > on > > 7.4.100.60 but not on 7.4.110.0. > > > > We can't get anything shared on a wire to pass through to wireless clients > > on 7.4.110.0. > > > > I agree entirely - it worked "pretty good" on 7.4.100.60 but not so well on > > 110.0. > > > > We are using an app called papercut to manage printing, we have it > > installed on an osx server, it's role is to share queues that the apple ios > > devices should see. We can't seem to make that work reliably, either - but > > there I am beginning to suspect the papercut software isn't quite doing > > things right because we can make handiprint shared queues show through. > > > > It's not been fun working with cisco on this one... > > > > Aside from the mDNS, 7.4.110.0 seems fine... > > > > > > > > -Rick > > > > > > > > On 8/29/2013 11:58 AM, Mark Duling wrote: > >> Hi Rick, > >> > >> What mdn s issues are you seeing, and which version do you see it on? > >> Has TAC been able to help? > >> > >> mdns worked pretty good on 7.4.100.6 (engineering build) for us and > >> we went to 7.4.110.0 and immediately added a new WLAN. Not sure if > >> it was the new code or adding the WLAN, but on the new WLAN mdns is > >> squirrely. Some AppleTVs don't work at all if you're on the new > >> WLAN, and others do. But get on the old WLAN and it works fine. The > >> settings on the new and old WLANs are identical. It's baffling. > >> > >> Anyone else see issues like this on 7.4? > >> > >> Mark > >> > >> On Thu, Aug 29, 2013 at 7:30 AM, Rick Coloccia, Jr. > >> < [email protected]> wrote: > >>> Here we have six controllers on 7.4.110.0 and one on 7.4.100.60. > >>> We're having a hell of a time wi t h mDNS that explains the one > >>> controller on difference code. Otherwise, upgrades into 7.4 were smooth > >>> as butter... > >>> Make sure you upgrade Prime and your MSEs, too... OK, one exception > >>> - I did need to remove and readd the MSE to Prime to get it working > >>> again after the upgrade to 7.4... but that was easy. > >>> > >>> -Rick > >>> > >>> > >>> > >>> > >>> On 8/29/2013 10:23 AM, John York wrote: > >>> > >>> +1. We're also on 7.2.111.3 and wondering if it's time to upgrade. > >>> +Is > >>> there a nice, stable new release for the 5508? I'm still gun shy > >>> from the > >>> 4400 days, when an upgrade often meant lost weekends and tearing out > >>> of hair. > >>> > >>> John > >>> > >>> > >>> > >>> From : The EDUCAUSE Wireless Issues Constituent Group Listserv > >>> [mailto:[email protected]] On Behalf Of Ball, Erik > >>> Sent: Thursday, August 29, 2013 10:17 AM > >>> To: [email protected] > >>> Subject: Re: [WIRELESS-LAN] What Cisco WLAN controller code are you > >>> running? > >>> > >>> > >>> > >>> 7.2.111.3 is what we are on, and have stayed there because it has > >>> been stable for us. Just wondering if we should jump to 7.4.110.0 > >>> or some other code... > >>> > >>> > >>> > >>> From: The EDUCAUSE Wireless Issues Constituent Group Listserv > >>> [mailto:[email protected]] On Behalf Of Vikki > & g t;>> Cutrone > >>> Sent: Thursday, August 29, 2013 10:13 > >>> To: [email protected] > >>> Subject: Re: [WIRELESS-LAN] What Cisco WLAN controller code are you > >>> running? > >>> > >>> > >>> > >>> I thought this was a bug when Win 8 first came out and fixed in code > >>> 7.2.111.3, sometime around October 2012. > >>> > >>> > >>> > >>> On Thu, Aug 29, 2013 at 10:06 AM, Ball, Erik < [email protected]> wrote: > >>> > >>> We are curious what Cisco WLAN controller code you are running (5508 > >>> controllers?) > >>> > >>> > >>> > >>> With the number of Windows 8 systems that are coming in the door > >>> from students, we are fairly certain that we are hitting this bug, > >>> which we have been resolving with client drivers.... > >>> > >>> > >>> > >>> CSCua29504 - 802.11w-capable client fails pairwise key handshake with > >>> AES. > >>> > >>> https://tools.cisco.com/bugsearch/bug/CSCua29504/?referring_site=ss > >>> > >>> > >>> > >>> Symptom: > >>> > >>> An 802.11w-capable client, such as a PC running Windows 8, cannot > >>> connect to an SSID using WPA or WPA2 key management with AES > >>> encryption. The AP will send the M1 pairwise key message, but the PC will > >>> never respond with M2. > >>> > >>> With "debug client" in effect, a message similar to the following > >>> will be > >>> seen: > >>> > >>> *dot1xMsgTask : Jun 12 20:23:37.471: 00:11:22:33:44:55 Retransmit > >>> failure for EAPOL-Key M1 to mobile 00:11:22:33:44:55, retransmit > >>> count 5, mscb deauth count 0 > >>> > >>> Conditions: > >>> > >>> Client is 802.11w-capable, wireless infrastructure is CUWN, SSID > >>> using WPA2/AES or WPA/AES. This bug affects CUWN 5.2.178.0 and > >>> above, but not CUWN > >>> 4.2 or earlier, nor does it affect autonomous IOS APs. > >>> > >>> Workaround: > >>> > >>> Use WPA/TKIP or WPA2/TKIP instead. Note that this will limit the > >>> client to 802.11g/802.11a data rates. > >>> > >>> Another workaround is to use a Windows 7, rather than Windows 8 > >>> driver, for the adapter. > >>> > >>> > >>> > >>> Thanks, > >>> Erik > >>> > >>> > & gt;>> > >>> ________________________________ > >>> > >>> > >>> "This message may contain confidential and/or proprietary > >>> information and is intended for the person/entity to whom it was > >>> originally addressed. Any use by others is strictly prohibited." > >>> > >>> ********** Participation and subscription information for this > >>> EDUCAUSE Constituent Group discussion list can be found at > >>> http://www.educause.edu/groups/. > >>> > >>> > >>> > >>> > >>> -- > >>> > >>> Vikki Cutrone > >>> > >>> Network Administrator > >>> > >>> Vassar College, Box 13 > >>> > >>> 124 Raymond Ave > >>> > >>> Poughkeepsie, NY 12604-0013 > >>&g t ; > >>> > >>> > >>> 845-437-7231 > >>> > >>> ********** Participation and subscription information for this > >>> EDUCAUSE Constituent Group discussion list can be found at > >>> http://www.educause.edu/groups/. > >>> > >>> > >>> > >>> ________________________________ > >>> > >>> > >>> "This message may contain confidential and/or proprietary > >>> information and is intended for the person/entity to whom it was > >>> originally addressed. Any use by others is strictly prohibited." > >>> > >>> ********** Participation and subscription information for this > >>> EDUCAUSE Constituent Group discussion list can be found at > >>> http://www.educause.edu/groups/. < b r>>>> > >>> ********** Participation and subscription information for this > >>> EDUCAUSE Constituent Group discussion list can be found at > >>> http://www.educause.edu/groups/. > >>> > >>> > >>> > >>> -- > >>> Rick Coloccia, Jr. > >>> Network Manager > >>> State University of NY College at Geneseo > >>> 1 College Circle, 119 South Hall > >>> Geneseo, NY 14454 > >>> V: 585-245-5577 > >>> F: 585-245-5579 > >>> > >>> ********** 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 Const i tuent > >> Group discussion list can be found at http://www.educause.edu/groups/. > > > > > > -- > > Rick Coloccia, Jr. > > Network Manager > > State University of NY College at Geneseo > > 1 College Circle, 119 South Hall > > Geneseo, NY 14454 > > V: 585-245-5577 > > F: 585-245-5579 > > > > ********** > > 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/. > > > > < Airtunes.PNG> > > ********** > 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/. ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
