Greetings,
While troubleshooting FortiClient VPN frequent disconnects for a friend, I ran across MTU size calculation suggestions using ping test.
Followed a tutorial similar to following posted at: Netgear
My impression from reading various OpenWrt comments is to leave OpenWrt default of 1500 alone.
However ran the ping test (mentioned at link above) multiple times and the figure I obtained was 1420 (1392+28)!?
Any number above 1392 resulted in Packets need to be fragmented... message.
- Just wish to confirm that the problem is with the ISP (Internet Service Provider = cable internet) and not OpenWrt.
and - Any ideas as to what is happening with the ISP resulting in such numbers for the MTU?
- Confirm procedure to change MTU with current snapshot releases with LuCI is: Network > Devices > br-lan > General device options > MTU
Thanks.
EDIT: Corrected grammar