Starting a little over a month ago, one of our sites began to exhibit transient spikes in packet loss and latency when Zoom calls were running, causing freezes of varying length & frequency in both audio and video. The only change made to the network prior to this was upgrading the firmware of our MX105s from 17.10.2 to 18.107.2, performed roughly a week prior to complaints starting. (Upgrades were also made to our Meraki APs and switches, but our testing has effectively narrowed the problem down to our ISP/their on-site equipment or our firewall.  Firmware was rolled back, problems persisted. Upgraded back to 18.107.2 No change in performance when switching between primary and warm spare MX105s Traffic shaping settings had been left to default values up until now First attempt was configuring a rule for tagged Zoom Meeting traffic for High priority AF41, no improvement Enabling DSCP tagging in Zoom admin settings, then deploying the .msi installer to several clients, again no improvement Configured QoS settings at switch level, which seemed to make things worse and was quickly reverted Just now I have updated the Traffic Shaping rules to match the default Zoom DSCP tags for both audio and video (56(CS7) and 40(CS5), respectively); we'll see how that goes today Uplink history for 8.8.8.8 and a random Zoom IP both show similar but not identical timestamps and severity for latency & loss Live traffic data in uplink tab typically shows usage of less than 10% of our gigabit connection, though we occasionally see spikes varying from 400-700Mbp/s that are too short-lived and random to collect data on; whether or not these actually correlate to Zoom calls is unknown Reps from our ISP are giving me whiplash, with each phone call being a different person and contradicting what the last guy says First they mentioned scheduling an uncharacteristically rapid replacement of hardware, and a follow up call then saying it's not necessary and requested more trace route data instead and instruction to call ahead of a meeting to have circuit traffic captured live Another call pointed out near-max circuit utilization that didn't line up with with the Meraki dashboard reports, and a follow up call had another rep say he found no such record of that level of use If anyone has any insights or advice, by all means let me know since we're beating our heads against a wall at this point. ... View more

Looking for some clarification or guidance on how to best set up Zoom Rooms when using Meraki MDM. We have our room controller iPads configured using MDM and kept the controller app open using the MDM-level single app mode. The downside to this is that the app cannot update until the app lock is disabled and the app itself is closed, and we want to automate this as much as possible. Zoom's own documentation on setting up managed devices doesn't mention MDM, so it's a bit unclear if Zoom Device Management (ZDM) plays nicely with MDM or if it's a one or the other type deal.    So far I've turned on Autonomous Single App Mode in Zoom Admin, and created a test profile in MDM that enables ASAM for the Zoom Controller app and applied it to a couple of devices. As of right now, no iPad is enrolled in ZDM. Unless I've missed something, they are set to automatically update the app in the early hours of the morning, every day - but it's been 3 days now and the app has not updated.    I've already posted about this in Zoom's community, but I wanted to see if someone on this end has had experience with this kind of setup. ... View more