Disabling IPv6 on both the client and eliminating the ACL on the controller. Also mDNS is an issue with MAC clients. We disabled mDNS at the controller level as well.
At the controller CMD what's the result of 'Show ip igmp group'? also run 'show datapath utilization' and make sure your CPU's are close to zero. -----Original Message----- From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:[email protected]] On Behalf Of Jason Healy Sent: Friday, October 26, 2012 11:45 AM To: [email protected] Subject: Re: [WIRELESS-LAN] MAcbooks dropping off wireless network On Oct 26, 2012, at 10:30 AM, Lee H Badman <[email protected]> wrote: > Though it can come across as a cop-out, have you disabled IPv6 on the > clients? No, but we might try that. The issue happens only some of the time, and only to some clients. From our observation it appeared to be caused by load (the more students on at a time, the more likely to happen). We thought maybe it was a broadcast/multicast problem, but traffic graphs show that the MC rate is very low overall, and doesn't spike when the issues occur. Even when the issue occurs, it only affects some clients, and the clients it affects can vary from one day to the next. So I'll try disabling v6, but that seems a little too deterministic... ;-) As a side note, we also have an issue with our Aruba controller where it won't pass v6 traffic at all, so I doubt this is the case (as soon as we say "ipv6 firewall enable", all v6 traffic gets dropped, even if the ACL is "any any any permit"). Jason -- Jason Healy | [email protected] | http://www.logn.net/ ********** 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/.
