Ok. So this is happening in the cisco environment, but any issues in the Aruba environment?
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 -----Original Message----- From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Christina Klam Sent: Thursday, January 23, 2014 11:03 AM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: Re: [WIRELESS-LAN] dropped connections on Macbooks with Cisco WLC 7.6.100.0 All, We are seeing the exact same issue on some Samsung Galaxy S4 running 4.3.1 Here are the settings on the phone: CyanogenMod 10.2 Advanced Wifi settings: Keep Wifi on during sleep: Always Scanning always available: unchecked Avoid poor connections: checked Wifi frequency: auto Wifi optimization: checked So the problem is not isolated to IOS nor on 7.6. We are running 7.3.112. -- Christina Klam Network Engineer Institute for Advanced Study Email: ck...@ias.edu Einstein Drive Telephone: 609-734-8154 Princeton, NJ 08540 Fax: 609-951-4418 On 01/23/2014 10:52 AM, Spurgeon, Charles E wrote: > An indicator of a failing connection is that once the client is > associated and gets an IP addr, then it cannot ping the gw addr, but > it can ping past the gw addr to the Internet. > > > > When the connection eventually fails, packet capture shows that the > client loses the ARP entry for the gw addr. Connections may fail in 5 > to > 10 minutes and always fail by 20 minutes. As it happens, the ARP cache > timeout in MacOS is 20 minutes. If you wait another 20 minutes or so, > the ARP request will succeed and the connection will start working again. > > > > A TAC case is open, and the wireless BU is working on replicating. One > possibility is that it might be an issue with how the link aggregated > channel behaves between the controller and its connection to the router. > > > > Backing down the WLC code from 7.6 to 7.5 appears to clear up the > issue in my tests. > > > > -Charles > > > > *From:*The EDUCAUSE Wireless Issues Constituent Group Listserv > [mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] *On Behalf Of *Mike Albano > *Sent:* Tuesday, January 21, 2014 2:56 PM > *To:* WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU > *Subject:* Re: [WIRELESS-LAN] dropped connections on Macbooks with > Cisco WLC 7.6.100.0 > > > > Can you perform a packet capture and identify exactly when the failure > is occurring? Sniffer AP/Omnipeek/AirPCap etc (or more easily a 3SS > macbook via airport utilities...see > here: > http://rfsperra.tumblr.com/post/68654132591/capturing-802-11-traffic-w > ith-os-x > <http://rfsperra.tumblr.com/post/68654132591/capturing-802-11-traffic- > with-os-x> > ). > > > > Taking a closer look at the packets, while time consuming, should help > you get closer to the root cause. TAC will likely want this as well. > > -----The EDUCAUSE Wireless Issues Constituent Group Listserv > <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU > <mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>> wrote: ----- > > To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU > <mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> > From: "Spurgeon, Charles E" > Sent by: The EDUCAUSE Wireless Issues Constituent Group Listserv > Date: 01/21/2014 12:13PM > Subject: Re: [WIRELESS-LAN] dropped connections on Macbooks with Cisco > WLC 7.6.100.0 > > After getting complaints about connectivity drops on both Mabook Pro > and Macbook Air laptops, I was able to replicate the issue on the 5 > GHz radio, in either a model 3700 AP or a model 3600 with ac module. > No issues are seen (connection stays up for 30 minutes of testing) on > 5 GHz in a model 3500 or on a model 3600 with no ac module. > > > > To make a stable testbed I created an SSID that was identical to our > production SSID with the exception of a radio policy of 5GHz only. > Next, I created an AP group for testing with that SSID, and put the > 3600 or > 3700 AP into that group. So the test AP only has one SSID and only on > the 5GHz radio. > > > > Once associated with this SSID, the laptop is able to ping its own IP > addr, but not the gw addr. The laptop will be able to ping an addr on > the campus or Internet until it stops working, which will happen > anywhere from 10 to 20 minutes into the test. > > > > This result also occurs on an MBA with IPv6 disabled. > > > > So far the test connection eventually fails on a mid-2013 MBA running > 10.9.1 and a mid-2010 MBPro, running either 10.9 or 10.8.5. > > > > -Charles > > > > *From:*The EDUCAUSE Wireless Issues Constituent Group Listserv > [mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] *On Behalf Of *Tristan > Gulyas > *Sent:* Sunday, January 19, 2014 6:13 PM > *To:* WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU > <mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> > *Subject:* Re: [WIRELESS-LAN] dropped connections on Macbooks with > Cisco WLC 7.6.100.0 > > > > Hi guys, > > > > We're about to start piloting 7.6.100.0 with a variety of clients - > what's the best way to test/reproduce this issue? > > > > Cheers, > > Tristan > > > > > > > > On 17 Jan 2014, at 9:51 am, Luke Jenkins <ljenk...@weber.edu > <mailto:ljenk...@weber.edu>> wrote: > > > > We provide native dual stack access for our wireless clients, so > that could be why we aren't seeing the issue. > > > > -Luke > > > > On Thu, Jan 16, 2014 at 2:33 PM, Lee H Badman <lhbad...@syr.edu > <mailto:lhbad...@syr.edu>> wrote: > > We have found that disabling client-side IPv6 (we also are not > set up for it) puts an end to most OS X issues. Sometimes is the > fix for random Win problems, but very prevalent in OS X space. > > > -----Original Message----- > From: The EDUCAUSE Wireless Issues Constituent Group Listserv > [mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU > <mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>] On Behalf Of Scott > Allen > Sent: Thursday, January 16, 2014 4:30 PM > To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU > <mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> > Subject: Re: [WIRELESS-LAN] dropped connections on Macbooks with > Cisco WLC 7.6.100.0 > > Good point. I had a couple of problem tickets (7.4.100.0) that on > further investigation Prime showed the clients were connected only > IPv6 and getting nowhere because we don't have IPv6 enabled. > -Scott > > > On Thu, Jan 16, 2014 at 4:22 PM, Lee H Badman <lhbad...@syr.edu > <mailto:lhbad...@syr.edu>> wrote: > > We're doing fine with WPA-2, PEAP, MS-CHAP v2. I hate to say > it- but try > > disabling IPv6 on the problem machine, and make sure no OS X > updates > > waiting. > > > > > > > > From: The EDUCAUSE Wireless Issues Constituent Group Listserv > > [mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU > <mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> ] On Behalf Of Luke > Jenkins > > Sent: Thursday, January 16, 2014 3:06 PM > > To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU > <mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> > > Subject: Re: [WIRELESS-LAN] dropped connections on Macbooks > with Cisco WLC > > 7.6.100.0 > > > > > > > > We're running 7.6 with a mix of APs including 3602s, no > reports of this > > issue here and I've not noticed it on my Macbook Pro. Though > it could always > > be some setting we don't have in common such as different > encryption types, > > QoS, or HA that are causing the issue. > > > > > > > > Happy to drill down into the nitty gritty off list if you want > to check > > configs, drop me a line. > > > > > > > > -Luke > > > > > > > > > > > > On Thu, Jan 16, 2014 at 12:40 PM, Spurgeon, Charles E > > <c.spurg...@austin.utexas.edu > <mailto:c.spurg...@austin.utexas.edu> > wrote: > > > > Has anyone else seen a dropped connection issue with Macbooks > and Cisco WLC > > v 7.6.100.0 code? > > > > > > > > We are pilot testing 7.6.100.0 code on a WiSM2 card supporting > staff APs and > > have noticed a dropped connection issue with Macbooks when > associated with > > the 5GHz radio on model 3602i or 3702i APs. > > > > > > > > The connection typically fails after approx. 15 minutes, > usually leaving the > > client with an IP addr which it can ping, but the client > cannot ping the gw > > addr or anything beyond the gw. The client WiFi interface > reports that it is > > still associated, which is confirmed on the controller side of the > > connection. > > > > > > > > For one Macbook the test AP is directly above the laptop, with a > > 5GHz-specific and AP-specific SSID to help isolate the issue. > > > > > > > > IOS and Windows7 platforms do not appear to have the issue > when associated > > to the same SSID on the same AP. > > > > > > > > But so far three Macbooks (two Macbook Air with dot11ac, one > Macbook Pro > > with dot11n) have demonstrated the dropped connection issue. > They are all > > running Mac OS X 10.9.x (Mavericks). > > > > > > > > The issue does not occur when the test 3602i AP is moved back > to 7.4 code. > > > > > > > > Thanks, > > > > > > > > -Charles > > > > > > > > Charles E. Spurgeon > > > > University of Texas at Austin / ITS Networking > > > > c.spurg...@its.utexas.edu <mailto:c.spurg...@its.utexas.edu> / > 512.475.9265 > > > > ********** Participation and subscription information for this > EDUCAUSE > > Constituent Group discussion list can be found at > > http://www.educause.edu/groups/. > > > > > > > > > > > > -- > > > > =-=-=-=-=-=-=-=-=-=-=-= > > > > Luke Jenkins > > Network Engineer > > Weber State University > > > > ********** 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/. > > > > -- > > Scott Allen > Director, Network Services > Georgetown University > sc...@georgetown.edu <mailto:sc...@georgetown.edu> > mobile - 202-309-5739 > > ********** > 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/. > > > > > > -- > > =-=-=-=-=-=-=-=-=-=-=-= > > Luke Jenkins > Network Engineer > Weber State University > > ********** 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/. > ********** 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/.
