Zhone 2000 ユーザーガイド

The MTU setting controls IP fragmentation of packets transmitted through the 
specified port. Packet whose size is greater than the MTU value are 
fragmented to fit into the MTU size limit.
To set a maximum transmission unit value for a port, follow the steps below:

Type “M” on the Router Configuration menu (Figure 4.51) to select 

Configure Port Max Transmission Unit. The IAD displays the port table for 

this interface and prompts you to select a port.

Type the port number and press Enter. The IAD displays the current 

configuration and prompts you to change it.

Type the new MTU value (100-1500) and press Enter. (When set at 1500, IP 

fragmentation is disabled). The IAD saves the changes.

Continue with other configuration tasks, or press Escape to return to the 

Router Configuration menu.

For further information, refer to Frame Relay Applications Notes on 
page C-249.

To create, update, and/or delete static and default routes, type “S” on the 

Router Configuration menu (Figure 4.51). The IAD displays the Router 
Modification menu, which contains commands to manage the IAD’s route 
table:

Each option on this menu is described in detail below.

On the Router Modification menu type “A” to select Add a Static Route. 

The IAD prompts you to input the destination address:

Type the destination address to add and press Enter. The IAD displays the 

current subnet mask and prompts you to enter the network mask of the 

route.

Type the network mask and press Enter. The IAD prompts you for the 

gateway address.

Type the gateway address, press Enter. The static route is added. The IAD 

then asks if you want to save this route in the static configuration.