Hi, I have configured this router with leaving the defaults - all LAN ports are eth 2- eth 5 and eth1 is the WAN port with static interface configured. What I’m trying to do now is to change the MTU on an port including WLAN1 port? I tried changing it from the bridge interface, but it didn’t allow me. I have connected to Routerboard one gigabit switch to eth3 port. To the gigabit switch itself are connected Xenserver with couple VM’s running on it and NAS4Free system. NAS4Free has MTU set to 9000.
I’m sorry, but I’ve figured it out. I’ve changed the L2 MTU on every ethernet interface to the max allowed 4074 and the MTU changed to 4000>1500.