The only problem I have there- with “where your vendor tells you to start”- is that the vendor loves to push “go to latest code”.
THEN… Oops- now you got a new problem. Better downgrade. Let’s try this escalation code. Whoopsie, new bug… Let’s try THIS escalation code. Darn… different bugs. Yikes. Let’s go back to where you were. Oh wait, same problem. Let’s try THIS escalation code. What, you can’t live with this other bug? And so on. Each gyration extremely disruptive, and one thing I don’t think Cisco (at least) TAC really grasps the gravity of during an academic semester. Beyond that, I don’t disagree with Brother Samuel. -Lee Lee Badman | Network Architect (CWNE#200) Information Technology Services (NDD Group) 206 Machinery Hall 120 Smith Drive Syracuse, New York 13244 t 315.443.3003 e lhbad...@syr.edu<mailto:lhbad...@syr.edu> w its.syr.edu Campus Wireless Policy: https://answers.syr.edu/display/network/Wireless+Network+and+Systems SYRACUSE UNIVERSITY syr.edu From: The EDUCAUSE Wireless Issues Community Group Listserv <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> On Behalf Of Samuel Clements Sent: Friday, February 12, 2021 8:30 AM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: Re: [WIRELESS-LAN] Macbook zoom wireless dropout issues Troubleshooting seemingly disjointed problems and crowdsourcing recommendations is always a tricky thing for us to navigate. Personally, I like to look at things like "absolutely everything is okay except for one single app" with a grain of salt unless I can back it up with empirical evidence (application inspection, external app health solutions, etc). Just because Zoom is filtering to the top, you very well could be having pervasive issues otherwise, but the vocal majority could simply be expressing Zoom since it can be taxing on a number of network components. Unless you want to delve off into actual troubleshooting scenarios (capturing debugs & packets), you're going to be left with "punch list" troubleshooting - and those come from vendor recommended best practices. In this case, I'd make sure that you follow the Apple/Cisco document that is meant to address both manufacturers recommendations: https://www.cisco.com/c/dam/en/us/td/docs/wireless/controller/technotes/8-6/Enterprise_Best_Practices_for_iOS_devices_and_Mac_computers_on_Cisco_Wireless_LAN.pdf I'd particularly pay attention to QoS since it's easy to get wrong - remember, unless you have trust on *every* link (yes, even those fancy 10G links in your core), you do not have QoS. It's a lengthy doc, but it's quite comprehensive - and most everything is in there for a reason. Let's be honest, having a nice reference guide is far better than vendors that don't qualify interoperability (cue Lee complaining about Wi-Fi Alliance) or provide design recommendations. In short, I'd recommend you start where your vendors suggest you start. -Sam On Fri, Feb 12, 2021 at 6:36 AM Lee H Badman <000000db5b77bd95-dmarc-requ...@listserv.educause.edu<mailto:000000db5b77bd95-dmarc-requ...@listserv.educause.edu>> wrote: That there are widespread problems with Zoom, and often just Zoom, is not hard to appreciate- one random sample: https://www.reddit.com/r/Zoom/comments/g58olb/keep_getting_your_internet_connection_is_unstable/?utm_medium=android_app&utm_source=share The risk in tweaking controller settings for just Zoom's issues are that you can create more problems. Tread lightly here, and know that you are not alone. At the same time, if anyone has discovered a silver bullet, I'd like to hear it as well. To me, it seems like the fix should be on the Zoom end, but am trying to keep an open mind. Lee Badman | Network Architect | CWNE #200 Information Technology Services 206 Machinery Hall 120 Smith Drive Syracuse, New York 13244 t 315.443.3003 f 315.443.4325 e lhbad...@syr.edu<mailto:lhbad...@syr.edu> w its.syr.edu<http://its.syr.edu> SYRACUSE UNIVERSITY syr.edu<http://syr.edu> ________________________________ From: The EDUCAUSE Wireless Issues Community Group Listserv <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>> on behalf of Tariq Adnan <000001e6b38f57b3-dmarc-requ...@listserv.educause.edu<mailto:000001e6b38f57b3-dmarc-requ...@listserv.educause.edu>> Sent: Thursday, February 11, 2021 9:19 PM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>> Subject: [WIRELESS-LAN] Macbook zoom wireless dropout issues Hello everyone, Just checking if you have recently come across any macbook zoom wireless dropout (and frozen screen) issues and have taken any step to resolve it. So I have come across a Macbook running Catalina 10.15.7 reporting zoom dropouts from time to time. The AP is 3700 and the controller model is 8540 running code 8.5.161.6. The session time out on the SSiD is set to 24 hours. The QOS is default “silver”. I was running debug on WLC (debug client mac) and AP and there is no helpful log generated at the time of issue. The utilization for both radios on the AP is close to 1% (not busy) and the noise and interference reported by AP is not unusual. The switchport have no errors etc. I have searched this forum and few people have reported that the mac’s were having issues with specific 5G channels. Some suggested to change few things on the mac (turn off unlock with apple watch) etc. So if you have recently dealt with something similar, can you please share your thoughts and if you have resolved the issue, how did you do that (code upgrade etc.)? Few things I can try: -Set Qos profile to platinum -Disable Aironet IE -Configure Idle timeout on the ssid (less than session timeout) : currently it is default 5 minutes -Disable 11ac MU-MIMO on ssid -upgrade macos to Big Sur Thanks, Tariq ********** Replies to EDUCAUSE Community Group emails are sent to the entire community list. If you want to reply only to the person who sent the message, copy and paste their email address and forward the email reply. Additional participation and subscription information can be found at https://www.educause.edu/community ********** Replies to EDUCAUSE Community Group emails are sent to the entire community list. If you want to reply only to the person who sent the message, copy and paste their email address and forward the email reply. Additional participation and subscription information can be found at https://www.educause.edu/community ********** Replies to EDUCAUSE Community Group emails are sent to the entire community list. If you want to reply only to the person who sent the message, copy and paste their email address and forward the email reply. Additional participation and subscription information can be found at https://www.educause.edu/community ********** Replies to EDUCAUSE Community Group emails are sent to the entire community list. If you want to reply only to the person who sent the message, copy and paste their email address and forward the email reply. Additional participation and subscription information can be found at https://www.educause.edu/community
