Hi there. For 18 months I’ve been using SpeedFusion on a Pepwave Max Transit Duo with AT&T, Verizon, and Starlink for RV. I rely on this setup for bulletproof connection to Zoom for work every day, and it has never failed me - until recently. For the past month or so, I’ve been experiencing terrible packet loss and packet delays when using SpeedFusion to the point that it makes Zoom unusable. When I disable SpeedFusion and route my traffic over just one of my connections (AT&T, Verizon, or Starlink) I get much better performance in terms of packet loss and delayed packets.
I’m scratching my head over this because I haven’t made any changes to my configuration.
I’ve tried only bonding my two cellular connections: still get major packet loss/delays.
I’ve tried just bonding AT&T with Starlink, then just Verizon with Starlink: still get major packet loss/delays.
But, when I turn off SpeedFusion and use just one wan connection, Zoom does much better.
Any idea what could be causing such dramatic issues only when using SpeedFusion with this setup? Thanks in advance!
Hi there
Not sure what’s changed, other than 8.3.0 coming out.
FWIW, you have a lot of WANs active for WAN Smoothing in my experience. Do you need all of those? I’ve found that its better to pick the connections that I want to use as my primary (and lower cost) bandwidth. The overall redundancy level of Medium also uses more bandwidth in my experience. I’d recommend setting DF and using Bonding rather than DWB. I’ve also found that setting bandwidth limits helps avoid packet loss if something else is using the WAN Smoothing connection. Also, in my experience FEC doesn’t help real-time 2-way video traffic.
I’d also suggest trying using DWB, without WAN smoothing. It does a great job for me.
Also are you using the SFC rules to allocate your Zoom traffic so you’re only putting Zoom traffic through the SFC route?
Very interesting recommendations, thank you. I should note, taking these recommendations will be my first time changing these settings in over a year. This setup has worked great as configured until recently.
WAN connections: Most of those connections are inactive. They’re available for WAN smoothing when I have access to wifi, but 99% of the time I’m just on cellular and starlink. I’ve gone ahead and removed them per your reco so now it’s just starlink + verizon + att.
I tested switching to Bonding instead of Dynamic Bonding per your reco. But what is “DF” in your post?
I also tested DWB without wan smoothing per your reco.
MySFC rules are setup to only route Zoom, Skype, and WebEx through SFC. Nothing else. I never have more than one of those running at once.
After testing the different configuration recommendations above, I’m still experiencing packet loss of 25-50% and 60-80% of packets arriving much too late for viable video meetings.
Sorry to hear that those recommendations didn’t improve it for you. I use those settings with a few minor tweaks on multiple Transit Duos and they work great.
DF is do not fragment. It is in the Packet Fragmentation area.
Have you turned off Forward Error Correction as that affects timing?
I have experienced varying problems with Starlink recently especially with latency and poor upload in congested areas. What happens if you try this DWB setup with the bandwidth limits? If you still have problems it would point to your Starlink as a problem. As a trouble shooting step, unplug your Starlink ethernet from the Duo. It’ll instantly drop to the cell connections. What happens then to your performance? The screenshot is from a Transit Duo deployed in the middle of nowhere and reliably streams Zoom, Webex and Teams with Starlink and we can only get 2 bars of Verizon LTE (no AT&T or T-Mobile).
