Hello, i’m implementing MPLS in my network and i have some questions about MTU in MPLS.
If i change MPLS MTU for example to 1550 in /mpls interface do i need change MTU size on ports in /interface ethernet from 1500 to 1550?
Thanks for answer
MTU on each layer is separate, and each layer needs CORRECT MTU configured, not just as large as the next layer.
I highly recommend checking this presentation from 10:05 onwards.
It discusses MTU in depth:
https://youtu.be/Q8AF-Srulmk?t=606