05-15-2018 06:10 AM
there is extended commands under root account.
As command ipconfig is working, i guess that command for changing MTU will work as well.
ifconfig eth0 mtu 1400
Pay attention always when you changing ethernet configuration! It's not recommended to change management port configuration on which you are accessing your switch!. Please use serial cable to test this settings. In many case your session will be droped out and switch will be unreachable.
In case that you have director you may connect to another CP and route via backbone IP.