Issues with Zoom in Res Halls
Hey - We have started getting reports of issues with Zoom calls in our Res Halls. Most of the complaints have been around multiple drops during calls or lagging calls. Our res halls are currently only at 40-50% capacity if that. I was curious if anyone else has been seeing any issues with an increase of Zoom calls from on campus students. -- Charles Rumford (he/his/him) IT Architect ISC Tech Services University of Pennsylvania OpenPGP Key ID: 0xF3D8215A ** 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
RE: Issues with Zoom in Res Halls
Charles, I doubt this is the issue but I'm just sharing because we had another edu customer with this issue in the last 2 weeks. Students returned to the campus and/but were still taking instruction via Zoom (even when on campus and sitting in a classroom). They don't use proxies and the added bandwidth (latency-sensitive audio and video streams going in/out) were simply tanking their Internet connection and well - more specifically - not overloading the Internet bandwidth but overloading what their firewall/gateway security tools could handle. Not as likely in your situation but sharing anyway. -jj ___ Jennifer Minella, CISSP, HP MASE VP of Engineering & Security Carolina Advanced Digital, Inc. www.cadinc.com j...@cadinc.com 919.460.1313 Main Office 919.539.2726 Mobile/text -Original Message- From: Charles Rumford Sent: Friday, January 22, 2021 10:22 PM Subject: Issues with Zoom in Res Halls Hey - We have started getting reports of issues with Zoom calls in our Res Halls. Most of the complaints have been around multiple drops during calls or lagging calls. Our res halls are currently only at 40-50% capacity if that. I was curious if anyone else has been seeing any issues with an increase of Zoom calls from on campus students. -- Charles Rumford (he/his/him) IT Architect ISC Tech Services University of Pennsylvania OpenPGP Key ID: 0xF3D8215A ** 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 Visit https://cadinc.com/blog for tech articles and news. ** 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
Re: [WIRELESS-LAN] Issues with Zoom in Res Halls
We struggled with packet loss and many complaints of unexplained connectivity issues in the fall. Gaming elicited the most complaints, but Zoom was second. We don't know if these applications are having more problems than others, or if everything is working similarly and these apps are just more sensitive. There's evidence to suggest the latter. We're pretty sure the loss is occurring on the controllers, but we haven't identified the root cause. The loss is also insufficient to explain all the connectivity complaints. While the symptoms are clearly distinct, it's still possible they share a cause, so we're focusing our attention on the loss. Students haven't returned yet, but I expect the problems to pick up right where they left off. From: Charles Rumford Sent: Friday, January 22, 2021 10:22 PM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: [WIRELESS-LAN] Issues with Zoom in Res Halls Hey - We have started getting reports of issues with Zoom calls in our Res Halls. Most of the complaints have been around multiple drops during calls or lagging calls. Our res halls are currently only at 40-50% capacity if that. I was curious if anyone else has been seeing any issues with an increase of Zoom calls from on campus students. -- Charles Rumford (he/his/him) IT Architect ISC Tech Services University of Pennsylvania OpenPGP Key ID: 0xF3D8215A ** 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://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.educause.edu%2Fcommunity&data=04%7C01%7Ccae104%40PSU.EDU%7C9cc8d56d19ec4986c29c08d8bf4e2004%7C7cf48d453ddb4389a9c1c115526eb52e%7C0%7C0%7C637469689557575220%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=LFFFsNB5u6n87qTWzX2k8VbfaisjOwn8zwaZqA8DIKs%3D&reserved=0 ** 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
Re: [WIRELESS-LAN] Issues with Zoom in Res Halls
Had this problem in the fall. Problems were * Blocked APs (we use hospitality units every other room) (pillows, mini fridges, you name it) typically in the adjacent room * Old laptops with 2.4ghz radios Suggested to go wired if possible or to get a dual band USB radio. On Fri, Jan 22, 2021 at 10:22 PM Charles Rumford wrote: > Hey - > > We have started getting reports of issues with Zoom calls in our Res > Halls. Most > of the complaints have been around multiple drops during calls or lagging > calls. > Our res halls are currently only at 40-50% capacity if that. > > I was curious if anyone else has been seeing any issues with an increase > of Zoom > calls from on campus students. > > > -- > Charles Rumford (he/his/him) > IT Architect > ISC Tech Services > University of Pennsylvania > OpenPGP Key ID: 0xF3D8215A > > ** > 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
RE: [WIRELESS-LAN] Issues with Zoom in Res Halls
There was mention of a bug in one of the code bases (maybe 8.5) that could cause this, but there was updated code for it. Also, go have a look at the events for the AP's in question. We had a few reports of call pauses/lags, and with the Zoom diagnostic data from the meeting details in-hand, we correlated it to the client's connected AP switching channels because of RRM/Interference. If you're not familiar with the Zoom client/meeting data, ask your Zoom admin to give you access to the dashboard. For live and past meetings you can see a wealth of information on what the client is up to and how it is performing. Jeff -Original Message- From: The EDUCAUSE Wireless Issues Community Group Listserv On Behalf Of Charles Rumford Sent: Friday, January 22, 2021 7:22 PM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: [WIRELESS-LAN] Issues with Zoom in Res Halls Hey - We have started getting reports of issues with Zoom calls in our Res Halls. Most of the complaints have been around multiple drops during calls or lagging calls. Our res halls are currently only at 40-50% capacity if that. I was curious if anyone else has been seeing any issues with an increase of Zoom calls from on campus students. -- Charles Rumford (he/his/him) IT Architect ISC Tech Services University of Pennsylvania OpenPGP Key ID: 0xF3D8215A ** 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
Re: [WIRELESS-LAN] Issues with Zoom in Res Halls
One thing to remember is Zoom is bi-directional hi-def streaming video. Literally NOTHING is harder on your wifi and WAN connection, except maybe certain low-latency online games (these tend to need more bi-directional packets, but less bandwidth) Back last Spring, when the whole remote thing really got started, I had the discussion with our leadership about whether our network could handle such traffic. I considered three scenarios: 1) Around 10% of students still on campus, but attending virtually due to self isolation or quarantine. 2) At most 50% on campus attending virtually if we had to do an alternating days type model (this never actually happened). And 3) 100% remote, where students are NOT generally on campus, so it's faculty using the network resources. Given those scenarios, I was confident we would be okay for 1 and 3, and made a few calls about #2 in case we needed to quickly adjust bandwidth or coverage. Today, we've so far received the first 5 inches of snow out of an expected 12, and last night the provost declared classes would be 100% virtual for the storm. This goes beyond any of those scenarios, and our network is being tested. I'm seeing more drops/retries, but not to the level things are being disrupted. Crossing my fingers it holds up, but I won't be surprised to hear complaints later, either. This isn't bad; it's the natural result of pushing the edge of what the network is designed for. It means I did my job well. The network can handle normal to large loads, and for the truly exceptional events provides basic service for the 90%. Of course 100% would be better, but spending those resources for a once a century event seems wasteful (until you're sitting in the middle of one). Joel Coehoorn Director of Information Technology York College of Nebraska On Mon, Jan 25, 2021 at 11:13 AM Jeffrey D. Sessler wrote: > There was mention of a bug in one of the code bases (maybe 8.5) that could > cause this, but there was updated code for it. > > Also, go have a look at the events for the AP's in question. We had a few > reports of call pauses/lags, and with the Zoom diagnostic data from the > meeting details in-hand, we correlated it to the client's connected AP > switching channels because of RRM/Interference. > > If you're not familiar with the Zoom client/meeting data, ask your Zoom > admin to give you access to the dashboard. For live and past meetings you > can see a wealth of information on what the client is up to and how it is > performing. > > Jeff > > -Original Message- > From: The EDUCAUSE Wireless Issues Community Group Listserv < > WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> On Behalf Of Charles Rumford > Sent: Friday, January 22, 2021 7:22 PM > To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU > Subject: [WIRELESS-LAN] Issues with Zoom in Res Halls > > Hey - > > We have started getting reports of issues with Zoom calls in our Res > Halls. Most of the complaints have been around multiple drops during calls > or lagging calls. > Our res halls are currently only at 40-50% capacity if that. > > I was curious if anyone else has been seeing any issues with an increase > of Zoom calls from on campus students. > > > -- > Charles Rumford (he/his/him) > IT Architect > ISC Tech Services > University of Pennsylvania > OpenPGP Key ID: 0xF3D8215A > > ** > 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
RE: [WIRELESS-LAN] Issues with Zoom in Res Halls
We hit that hurdle last semester as well. All students were remote in the spring and of course no issues because the traffic demand was distributed. In the fall they all returned to campus but we maintained much of the zoom schedule. Our WAN links were hit hard and we had to upgrade them, wireless took a beating with all the HD video use, on top of the existing noise floor from IoT and rogue devices. We took a flood of helpdesk tickets and tried our best to suggest best practices and campus wide messaging. I later found out there is also the ability to host the majority of heavy Zoom traffic locally on a few VMs. I believe there was no additional licensing cost, at least at our subscription level. Just some server and admin time to set it up. Perhaps worth looking into. Mike Dorshimer Network Administrator Shippensburg University -Original Message- From: The EDUCAUSE Wireless Issues Community Group Listserv On Behalf Of Charles Rumford Sent: Friday, January 22, 2021 10:22 PM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: [WIRELESS-LAN] Issues with Zoom in Res Halls Hey - We have started getting reports of issues with Zoom calls in our Res Halls. Most of the complaints have been around multiple drops during calls or lagging calls. Our res halls are currently only at 40-50% capacity if that. I was curious if anyone else has been seeing any issues with an increase of Zoom calls from on campus students. -- Charles Rumford (he/his/him) IT Architect ISC Tech Services University of Pennsylvania OpenPGP Key ID: 0xF3D8215A ** 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
Re: [WIRELESS-LAN] Issues with Zoom in Res Halls
Mike Dorshimer's experience mirrors ours at Westmont. We had to upgrade our firewalls, switch stack associated with the Internet, Bandwidth from our ISPs, and core switches to deal with the increased traffic demands. We found that even though wireless signal and connectivity appeared solid, there was a certain unpredictability present in wireless that wasn't present for wired connections. This unpredictability seems to be more likely in APs running 802.11ax compared to 802.11ac for some reason. However, we do not have the resources to do a deep dive that would be necessary to track down these intermittent problems. John Rodkey Director of Servers and Networks Westmont College Verification: Unsure if this is a legitimate email to an email list? Make sure it is recorded at https://my.westmont.edu/it_emails "*God-fearing faith... is neither brash nor foolhardy and does not tempt God."* - Martin Luther On Mon, Jan 25, 2021 at 5:54 PM Dorshimer, Michael wrote: > We hit that hurdle last semester as well. All students were remote in the > spring and of course no issues because the traffic demand was distributed. > In the fall they all returned to campus but we maintained much of the zoom > schedule. Our WAN links were hit hard and we had to upgrade them, wireless > took a beating with all the HD video use, on top of the existing noise > floor from IoT and rogue devices. We took a flood of helpdesk tickets and > tried our best to suggest best practices and campus wide messaging. > > I later found out there is also the ability to host the majority of heavy > Zoom traffic locally on a few VMs. I believe there was no additional > licensing cost, at least at our subscription level. Just some server and > admin time to set it up. Perhaps worth looking into. > > Mike Dorshimer > Network Administrator > Shippensburg University > > -Original Message- > From: The EDUCAUSE Wireless Issues Community Group Listserv < > WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> On Behalf Of Charles Rumford > Sent: Friday, January 22, 2021 10:22 PM > To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU > Subject: [WIRELESS-LAN] Issues with Zoom in Res Halls > > Hey - > > We have started getting reports of issues with Zoom calls in our Res > Halls. Most of the complaints have been around multiple drops during calls > or lagging calls. > Our res halls are currently only at 40-50% capacity if that. > > I was curious if anyone else has been seeing any issues with an increase > of Zoom calls from on campus students. > > > -- > Charles Rumford (he/his/him) > IT Architect > ISC Tech Services > University of Pennsylvania > OpenPGP Key ID: 0xF3D8215A > > ** > 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
Re: [WIRELESS-LAN] Issues with Zoom in Res Halls
Not sure if this is still an issue or not, but a little while back the #1 cause of complaints for Zoom were students using the Zoom app on a Chromebook. If those students deleted the app and used Zoom via the browser their issues went away. --Dan Oachs On Fri, Jan 22, 2021 at 9:22 PM Charles Rumford wrote: > Hey - > > We have started getting reports of issues with Zoom calls in our Res > Halls. Most > of the complaints have been around multiple drops during calls or lagging > calls. > Our res halls are currently only at 40-50% capacity if that. > > I was curious if anyone else has been seeing any issues with an increase > of Zoom > calls from on campus students. > > > -- > Charles Rumford (he/his/him) > IT Architect > ISC Tech Services > University of Pennsylvania > OpenPGP Key ID: 0xF3D8215A > > ** > 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
Re: [WIRELESS-LAN] Issues with Zoom in Res Halls
Do you know the bug id by chance for the issues with 8.5 code you mention? Thanks -Jimmy On Tue, Jan 26, 2021 at 1:30 AM Jeffrey D. Sessler wrote: > There was mention of a bug in one of the code bases (maybe 8.5) that could > cause this, but there was updated code for it. > > Also, go have a look at the events for the AP's in question. We had a few > reports of call pauses/lags, and with the Zoom diagnostic data from the > meeting details in-hand, we correlated it to the client's connected AP > switching channels because of RRM/Interference. > > If you're not familiar with the Zoom client/meeting data, ask your Zoom > admin to give you access to the dashboard. For live and past meetings you > can see a wealth of information on what the client is up to and how it is > performing. > > Jeff > > -Original Message- > From: The EDUCAUSE Wireless Issues Community Group Listserv < > WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> On Behalf Of Charles Rumford > Sent: Friday, January 22, 2021 7:22 PM > To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU > Subject: [WIRELESS-LAN] Issues with Zoom in Res Halls > > Hey - > > We have started getting reports of issues with Zoom calls in our Res > Halls. Most of the complaints have been around multiple drops during calls > or lagging calls. > Our res halls are currently only at 40-50% capacity if that. > > I was curious if anyone else has been seeing any issues with an increase > of Zoom calls from on campus students. > > > -- > Charles Rumford (he/his/him) > IT Architect > ISC Tech Services > University of Pennsylvania > OpenPGP Key ID: 0xF3D8215A > > ** > 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 > -- James Helzerman Wireless Network Engineer University of Michigan - ITS Phone: 734-615-9541 ** 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
RE: [WIRELESS-LAN] Issues with Zoom in Res Halls
Hi Jimmy, As requested: CSCvu61194 : AP 2800/3800 sends burst of RTS and BAR randomly leading to low client data rates Symptom: During normal operation, randomly we see bunch of RTS/BAR packets being sent from the AP to the client. This leads to lower data rates or packet drops in the network. Customers might also see quality degradation issues with Webex/Skype/MicrosoftTeams audio/video calls. Regards ICT Services Netwerkbeheer – team wireless Gertjan Scharloo ICT consultant _ Universiteit van Amsterdam | Hogeschool van Amsterdam Leeuwenburg | kamer A10.20 Weesperzijde 190 | 1097 DZ Amsterdam Tel: +31(0)20 525 4885 Mobiel: +31(0) 61013-5880 <http://www.uva.nl/> www.uva.nl uva.nl/profile/g.scharloo <https://time.is/nl/CET> https://time.is/nl/CET Je kunt mij ook bereiken via Skype for Business of Teams Van: The EDUCAUSE Wireless Issues Community Group Listserv Namens James Helzerman Verzonden: dinsdag 26 januari 2021 18:23 Aan: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Onderwerp: Re: [WIRELESS-LAN] Issues with Zoom in Res Halls Do you know the bug id by chance for the issues with 8.5 code you mention? Thanks -Jimmy On Tue, Jan 26, 2021 at 1:30 AM Jeffrey D. Sessler mailto:j...@scrippscollege.edu> > wrote: There was mention of a bug in one of the code bases (maybe 8.5) that could cause this, but there was updated code for it. Also, go have a look at the events for the AP's in question. We had a few reports of call pauses/lags, and with the Zoom diagnostic data from the meeting details in-hand, we correlated it to the client's connected AP switching channels because of RRM/Interference. If you're not familiar with the Zoom client/meeting data, ask your Zoom admin to give you access to the dashboard. For live and past meetings you can see a wealth of information on what the client is up to and how it is performing. Jeff -Original Message- From: The EDUCAUSE Wireless Issues Community Group Listserv mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> > On Behalf Of Charles Rumford Sent: Friday, January 22, 2021 7:22 PM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU <mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> Subject: [WIRELESS-LAN] Issues with Zoom in Res Halls Hey - We have started getting reports of issues with Zoom calls in our Res Halls. Most of the complaints have been around multiple drops during calls or lagging calls. Our res halls are currently only at 40-50% capacity if that. I was curious if anyone else has been seeing any issues with an increase of Zoom calls from on campus students. -- Charles Rumford (he/his/him) IT Architect ISC Tech Services University of Pennsylvania OpenPGP Key ID: 0xF3D8215A ** 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 <https://eur04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.educause.edu%2Fcommunity&data=04%7C01%7Cg.scharloo%40UVA.NL%7C3e8cef82b9b74f31c7e908d8c21f04d4%7Ca0f1cacd618c4403b94576fb3d6874e5%7C1%7C0%7C637472785765086008%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=sUKiYpovZmf8zV37kDix7Rwwqjnj4umrX01DB9ECgiI%3D&reserved=0> ** 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 <https://eur04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.educause.edu%2Fcommunity&data=04%7C01%7Cg.scharloo%40UVA.NL%7C3e8cef82b9b74f31c7e908d8c21f04d4%7Ca0f1cacd618c4403b94576fb3d6874e5%7C1%7C0%7C637472785765095966%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=DLnqtrPvv6LyO355GN9PKmkjFP5lubmr5w9lvEDQwQE%3D&reserved=0> -- James Helzerman Wireless Network Engineer University of Michigan - ITS Phone: 734-615-9541 ** 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 <https://eur04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.educause.edu%2Fcommunity&data=04%7C01%7Cg.scharloo%40UVA.NL%7C3e8cef82b9b74f31c7e908d8c21f04d4%7Ca0f1cacd618c4403b94576fb3d6874e5%7C1%7C0%7C637472785765095966%7CUnknown%7CTWF
RE: [WIRELESS-LAN] Issues with Zoom in Res Halls
I don’t know if this is applicable, bur for zoom and teams we were seeing issues where as more people joined there would be poor audio or lag. Zoom does start off using TCP, but under load it will also use additional UDP ports, we found that by permitting UDP 3478-3481 for both Teams and Zoom we saw a noticeable improvement We were previously allowing just UDP8801-8810 and TCP8801-8802 M From: The EDUCAUSE Wireless Issues Community Group Listserv On Behalf Of James Helzerman Sent: 26 January 2021 17:23 To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: Re: [WIRELESS-LAN] Issues with Zoom in Res Halls Do you know the bug id by chance for the issues with 8.5 code you mention? Thanks -Jimmy On Tue, Jan 26, 2021 at 1:30 AM Jeffrey D. Sessler mailto:j...@scrippscollege.edu>> wrote: There was mention of a bug in one of the code bases (maybe 8.5) that could cause this, but there was updated code for it. Also, go have a look at the events for the AP's in question. We had a few reports of call pauses/lags, and with the Zoom diagnostic data from the meeting details in-hand, we correlated it to the client's connected AP switching channels because of RRM/Interference. If you're not familiar with the Zoom client/meeting data, ask your Zoom admin to give you access to the dashboard. For live and past meetings you can see a wealth of information on what the client is up to and how it is performing. Jeff -Original Message- From: The EDUCAUSE Wireless Issues Community Group Listserv mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>> On Behalf Of Charles Rumford Sent: Friday, January 22, 2021 7:22 PM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> Subject: [WIRELESS-LAN] Issues with Zoom in Res Halls Hey - We have started getting reports of issues with Zoom calls in our Res Halls. Most of the complaints have been around multiple drops during calls or lagging calls. Our res halls are currently only at 40-50% capacity if that. I was curious if anyone else has been seeing any issues with an increase of Zoom calls from on campus students. -- Charles Rumford (he/his/him) IT Architect ISC Tech Services University of Pennsylvania OpenPGP Key ID: 0xF3D8215A ** 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 -- James Helzerman Wireless Network Engineer University of Michigan - ITS Phone: 734-615-9541 ** 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
Re: [External] [WIRELESS-LAN] Issues with Zoom in Res Halls
We had a burst of such complaints a couple months back but couldn't get to an exact cause after a bit of investigation. During the process we learned that Zoom provides good troubleshooting information upon request which helped us un-blame the network. No recent complaints. Nayef Z. Smith | Network Services | Voice: 404-727-6019 [cid:3cd80d0a-6607-4560-9d0a-0db7829dfa3f] From: The EDUCAUSE Wireless Issues Community Group Listserv on behalf of Charles Rumford Sent: Friday, January 22, 2021 10:22 PM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: [External] [WIRELESS-LAN] Issues with Zoom in Res Halls Hey - We have started getting reports of issues with Zoom calls in our Res Halls. Most of the complaints have been around multiple drops during calls or lagging calls. Our res halls are currently only at 40-50% capacity if that. I was curious if anyone else has been seeing any issues with an increase of Zoom calls from on campus students. -- Charles Rumford (he/his/him) IT Architect ISC Tech Services University of Pennsylvania OpenPGP Key ID: 0xF3D8215A ** 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://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.educause.edu%2Fcommunity&data=04%7C01%7Cnayef.z.smith%40EMORY.EDU%7C9e51e23acda54645000108d8bf4e200d%7Ce004fb9cb0a4424fbcd0322606d5df38%7C0%7C0%7C637469689706116847%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=KUIMlortzwT4cQWNzbFTbjZI1GtzPudJ7gRDf5oVCdk%3D&reserved=0 This e-mail message (including any attachments) is for the sole use of the intended recipient(s) and may contain confidential and privileged information. If the reader of this message is not the intended recipient, you are hereby notified that any dissemination, distribution or copying of this message (including any attachments) is strictly prohibited. If you have received this message in error, please contact the sender by reply e-mail message and destroy all copies of the original message (including attachments). ** 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
