Apologies if this has been asked before, but I couldn’t find any posts about it. We currently have a setup for testing where we bridge two jumbo frame networks across 1500 mtu networks using openvpn, like so:
Openvpn in this case is just a pair of linux boxes and it works for the purposes we need it for.
I was keen to move it to mikrotik routers (specially for the “server” side of the equation), but i’ve hit a snag where on the ovpn server side it wont let me set the max-mtu beyond 1500 (just says bad mtu). Client side, it seems to be happy for me to set 9k as the mtu and it appears to work just fine (thought we haven’t tested it a while lot it did appear to be doing the assembly/disassembly correctly). To my knowledge, theres few protocols that can handle such a scenario beyond openvpn, but im wondering if anyone knows for certain that it cant be done on mikrotik’s on the server side or is there some way around it?
Thanks in advance