Way to change MTU on router

djb14336 wrote:

Just makes sense for it to be... if not something in their router, it would likely be the next link upstream.  I have their Askey model, and there are no accessible MTU settings there either.

All my stuff is set to use path discovery, and their router is negotiating the tunnel.  It would be the first thing in the localized chain getting set that way by TMO... and my devices are using 1420.

You can test from your clients to see what MTU gets through without fragmentation. Or just go to something like speedguide.net's TCP Analyzer.

The reason I ask because I was getting a pause when requests go out and lower send speeds, but when I tested my packets to google they were fragmented and timing out until I adjusted the MTU on my computer down to 1392 +28  = 1420  Now they are not fragmented and up speed seems more stable and my pings are much better.

This makes me think the router is set to 1500 and no way to adjust it other then per machine.