How do I lower the MTU on a Nokia appliance?

The MTU size can be changed on any interface using  "ifconfig"

running "ifconfig <nic name> mtu 1400" will change the MTU size on that interface dymamically. To make the change perminenant, the command must be entered into the "rc.local" file. The rc.local file is located in /var/etc. If it does not exisit, simply create it using the vi

The file should look like this:

ifconfig <your internal interface name> mtu 1400