The particular MAC issue we were dealing with oddly just disappeared when we reloaded all the WAPs in that particular building. Leaving it at that.
The only other thing I found that could be related to Staceys original query was disabling firewall and vpns helped some macbook users with similar DHCP problems. Anthony From: Anthony Croome Sent: Thursday, 15 October 2020 10:51 AM To: [email protected] Subject: RE: [WIRELESS-LAN] Mac wireless issue Hi Tariq Running WLC 8540 on 8.10.130.0 code with predominately 3702/3802 WAPs. Still some 3502/3602 on WISM2s with 8.5.161.0 code. Doesn't appear to be a specific to a model of AP. Anthony From: The EDUCAUSE Wireless Issues Community Group Listserv <[email protected]<mailto:[email protected]>> On Behalf Of Tariq Adnan Sent: Thursday, 15 October 2020 10:09 AM To: [email protected]<mailto:[email protected]> Subject: Re: [WIRELESS-LAN] Mac wireless issue Hi Anthony, What code you are running on your WLC? Is the issue specific to particular model of APs. We have not come across any such issue - perhaps there are not many people on the campus. Thanks, - Cheers, Kind regards, Tariq Adnan From: The EDUCAUSE Wireless Issues Community Group Listserv <[email protected]<mailto:[email protected]>> On Behalf Of Anthony Croome Sent: Thursday, 15 October 2020 9:55 AM To: [email protected]<mailto:[email protected]> Subject: Re: [WIRELESS-LAN] Mac wireless issue Sharing a summary of macbook suggestions seen on the internet for poor performance, stuck on 2.4GHz, zoom, etc: - delete the wifi network on macbook, add a new location and assign it the wifi network - disable "Use your Apple Watch to unlock apps and your Mac" - delete the wifi service and re-add (ie "delete the selected service") - check/fix country code on macbook wifi interface - doing an SMC, PRAM, and NVRAM reset - upgrading or downgrading the firmware on the wifi card - uninstalling/reinstalling Zoom (for zoom specific issues) I am still waiting on feedback from affected users whether any item in the list made things better. Maybe the next Cisco WLC 8540 code upgrade will help. Anthony QUT From: The EDUCAUSE Wireless Issues Community Group Listserv <[email protected]<mailto:[email protected]>> On Behalf Of Anthony Croome Sent: Friday, 9 October 2020 11:07 PM To: [email protected]<mailto:[email protected]> Subject: Re: [WIRELESS-LAN] Mac wireless issue We also have plenty of apple laptop users complaining about wifi performance. We have at least one macbook user who seems not to be able to connect to u-nii-1 channels and falls back to 2.4GHz. One suggestion I read today was to 'turn off unlock with Apple Watch and reboot'. Anthony ________________________________ From: The EDUCAUSE Wireless Issues Community Group Listserv <[email protected]<mailto:[email protected]>> on behalf of Jeffrey D. Sessler <[email protected]<mailto:[email protected]>> Sent: Thursday, 8 October 2020 9:45 AM To: [email protected]<mailto:[email protected]> <[email protected]<mailto:[email protected]>> Subject: Re: [WIRELESS-LAN] Mac wireless issue What channels are the impacted AP's running on? A few weeks ago I had a similar issue (Cisco wireless), My Mac laptop would attach to our WPA2 network no problem - auth was successful (5 GHz), but would never get an IP. If I walked the Mac laptop (running Catalina) into rage of another AP (also 5GHz), it worked perfectly. Same switch, same AP type, with the only difference being the channel the AP was on. I could replicate this in another area, where a user reported a similar issue. I don't have my notes in front of me, but I believe the problematic AP's were on unni-3 channels, and the ones that were OK, were not. With COVID, students remote, and work from home, I've not had time to go back in to the campus and really drill into it. There had been no reported problems when our campus closed in March, and no changes to our wireless deployment since that date. Jeff From: The EDUCAUSE Wireless Issues Community Group Listserv <[email protected]<mailto:[email protected]>> On Behalf Of Barros, Jacob Sent: Tuesday, October 06, 2020 12:25 PM To: [email protected]<mailto:[email protected]> Subject: Re: [WIRELESS-LAN] Mac wireless issue We are seeing oddities with macbooks as well. Our experience is similar both in scope and behavior, however, I am a Ruckus customer. Any Cisco or Meraki users with the same issue? [https://lh6.googleusercontent.com/ne_lTqgFJdoXUoU7gASzv0xOtDuEXE2aaf5NZNvmQ2e_NgyV_DSK_fBjBsHc5NeluIdDut6CDq9B7cQn3WHBZgFO5U9IyPePBYnuLPQ27XRP9oq2Snrkz_l8X0iU-z242JWJVv4Z]<https://urldefense.com/v3/__https:/protect-au.mimecast.com/s/TTu8CWLVXkURwRy7sxmwxR?domain=urldefense.com__;!!NVzLfOphnbDXSw!XANOdgqz7BrYFmt5JErr3BHvYLk4XkSY2qOYwbgwCJa_mgH1hzZV7U5fqck6VYrLRg$> Jacob Barros Associate Director of IT, Network and Operations / Information Security Officer | Office of Information Technology E: [email protected]<mailto:[email protected]> | W: 574.372.5100 ext. 6178 [https://lh5.googleusercontent.com/7qgaEy3R8t0pg6-FqBft4irBB3Tn07-iqWUmhV6zOMpEbI5uO8cZ-QGJaLvBqImKUw5TiHuVJNKO7jpbZJvnqIDHN1iXBMJRLUHfWS2DWYy_oyi4x1cp3kP8s3fz-xsskqXr4Ram]<https://urldefense.com/v3/__https:/protect-au.mimecast.com/s/TTu8CWLVXkURwRy7sxmwxR?domain=urldefense.com__;!!NVzLfOphnbDXSw!XANOdgqz7BrYFmt5JErr3BHvYLk4XkSY2qOYwbgwCJa_mgH1hzZV7U5fqck6VYrLRg$> On Tue, Oct 6, 2020 at 3:04 PM Stacey Frye <[email protected]<mailto:[email protected]>> wrote: Greetings, We are seeing a weird issue on our campus and hoping some of you may give us some ideas to check on. Background: We are using Aruba wireless controllers/APs (sadly, no airwave). All buildings are using the same VLAN ID for the wireless subnet, but each building has their own subnet for wireless. All APs are configured in the same AP-group. We have an open wireless network and not using any NAT (public IPs are being given out). IPv4 only. A lot of our Mac users, though not all, when trying to connect to wireless, they are able to connect to the AP, but are receiving a "No IP Address" message, and therefore cannot access the Internet. Once they leave this building and go to any other building on campus, they do not have an issue whatsoever. We have tried to manually configure the IP address, but still the device is unable to access the Internet (cannot even ping the GW). After removing the Wi-Fi option in Network Preferences and then re-adding, the device is able to get an IP from DHCP server, but is still unable to pass any traffic. We have tried rebooting the laptop, completely removing wireless network and reconnecting, and have tried booting in safe mode. Nothing seems to be working. If we connect using an ethernet cable in the same building that we're having wifi trouble in, it works with no problem. Config for the wireless subnet in the affected building is the exact same as config in all other buildings (except the subnet, of course). All buildings are using the same DHCP server. This seems to only be happening with Macs, not any Windows machines that I am aware of, nor do we have any problems with other Apple devices. And like I said, some Macs are having the issue, others are not. We only started seeing these problems within the last 2-3 weeks. The only difference we made in the affected building is giving it a larger subnet over the summer. We are working with our Aruba SE who is reaching out to TAC for us, but wanted to reach out to you guys for any other possible insight or ideas. Thanks in advance! 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