My daughter goes to an Idea College Prep charter school – she’s in 7th grade, and her school uses Microsoft Teams. My sons attend a local public school which won’t start classes until after Labor Day, and last year, they used a mess of tech: Zoom video conferences, Seesaw for parent/teacher feedback, and random files of any format for whatever else was needed.
From: AF [mailto:af-boun...@af.afmug.com] On Behalf Of Ken Hohhof Sent: Wednesday, September 02, 2020 2:51 PM To: 'AnimalFarm Microwave Users Group' Subject: Re: [AFMUG] Zoom QoS I just got off the phone with a parent who says their kids use Google Meet for classes. And some people have mentioned Microsoft Teams, but that was either for work or maybe college, I don’t think I’ve heard anybody say they are using Teams for K-12 classes. From: AF <af-boun...@af.afmug.com> On Behalf Of Adam Moffett Sent: Wednesday, September 2, 2020 2:30 PM To: af@af.afmug.com Subject: Re: [AFMUG] Zoom QoS If client has video turned off then the upload is similar to a VoIP call. Apparently the downlink can vary quite a bit depending on what the presenter is doing. Like audio only vs screen share vs video. On top of that the video can auto train. So yeah lots of variance. On 9/2/2020 2:59 PM, Ken Hohhof wrote: In theory the upstream bandwidth could be a problem, because Zoom says they need a little over 1 Mbps both directions. What I’ve actually seen is adults working from home typically have a steady 1M symmetric during a video conference. School kids on the other hand are all over the map. The traffic isn’t constant, and the upstream seems a lot less. I think it may depend on how they have it set up, like do you see the whole class in thumbnails. And the upstream may only go to a big number when the teacher calls on that student? One thing’s for sure, you get a house with WiFi coverage issues and a whole bunch of Zoomers, and they’re going to be calling and bugging the crap out of us. It’s similar to gamers who call saying things like it’s freezing or lagging or there’s audio but no video or one kid is fine but the other can’t get on. And it’s an existential crisis that has to be fixed right now this nanosecond and you hear the kids yelling at the mom in the background. Some problems are people on the lowest speed plan with insufficient upstream, but others I’m not sure what their problem is. One is saying only one of their kids can Zoom but their neighbor on our service and the same speed plan has 4 Zooming no problem. Does that mean they go to the same school, are in the same grade, have the same teacher? Probably not. And could it be WiFi issues? Probably. From: AF <mailto:af-boun...@af.afmug.com> <af-boun...@af.afmug.com> On Behalf Of Steve Jones Sent: Wednesday, September 2, 2020 1:41 PM To: AnimalFarm Microwave Users Group <mailto:af@af.afmug.com> <af@af.afmug.com> Subject: Re: [AFMUG] Zoom QoS we have one house with 5 remote learners, other than when theres a file getting uploaded, even on a small connection the mother ive been communicating with has said its been working flawlessly. is zoom related to skype in its back end? On Wed, Sep 2, 2020 at 1:33 PM Adam Moffett <dmmoff...@gmail.com> wrote: Porn isn't zoom.....at least not yet. Maybe that's the next new normal. Netflix also isn't zoom. So if 5 kids using Zoom on a 3mbps connection is the problem then what you say is true. If it's 1 or 2 kids competing with other households' Netflix and Chill then QoS can address that. On 9/2/2020 2:19 PM, Ken Hohhof wrote: If everything is Zoom, and you prioritize Zoom, you prioritize everything. It’s like everyone is a winner, but if nobody loses, what’s the point? I have observed that Zoom seems to use a little bit of TCP presumably a control channel and mostly UDP I think it’s on something like port 8801. Not sure if you have 3 or 4 students in the same house and maybe 1 or 2 adults all Zooming, if additional ports get used, kind of like VoIP using 5060, 5061, 5062, etc. From: AF <mailto:af-boun...@af.afmug.com> <af-boun...@af.afmug.com> On Behalf Of Adam Moffett Sent: Wednesday, September 2, 2020 12:25 PM To: af@af.afmug.com Subject: Re: [AFMUG] Zoom QoS Apparently they already set DSCP values to 56 for the audio and 40 for the video. Trusting DSCP from the Internet carries other dangers though (like Apple thinks iPhone software updates need expedited forwarding). On 9/2/2020 1:18 PM, Steve Jones wrote: zoom and google classroom are surprisingly resilient on their own. i dont know if its a school setting, or a default, but it seems it auto scales. I would actually be concerned about prioritizing it causing it to ramp up resolutions, etc and cause more net demand. unless maybe find the absolute minimum requirements and QOS that as the min On Wed, Sep 2, 2020 at 12:04 PM Adam Moffett <dmmoff...@gmail.com> wrote: Is the a simple way to classify Zoom traffic for prioritizing it? Like a layer7 match or matching a certain IP block. School is restarting soon (online) and I'm thinking this might be a hot item. -Adam -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com
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