Command Reference Guide

3Com Router 5000 Family and Router 6000 Family x25 x121-address ● 363
Command Reference
x25 x121-address
Purpose Use the x25 x121-address command to set the X.121 address of an X.25
interface.
Use the undo x25 x121-address command to delete the address.
Syntax x25 x121-address x.121-address
undo x25 x121-address
Parameters x.121-address
X.121 address of an interface. It is formatted using the
numerical string from 1 to 15 bytes.
Example Configure the link layer protocol on the interface Serial 0/0/0 as X.25, and X.121
address as 20112451.
[3Com] interface serial 0/0/0
[3Com-Serial0/0/0] link-protocol x25
[3Com-Serial0/0/0] x25 x121-address 20112451
View This command can be used in the following views:
■ Interface view
Description If the Router is accessed to X.25 public packet network, the ISP must assign a valid
X.121 address to it. If two Routers are only directly connected back to back, a user
can randomly specify the valid X.121 address. If you only wants the Router to work in
switching mode, the X.121 address needs not to be configured.
When you reconfigure an X.121 address for an X.25 interface, you need not delete
the original X.121 address, because the new address will overwrite the old one. After
an X.25 interface is re-configured, the original X.121 address will be deleted. So the
X.121 address must be re-configured to work properly.
Note: For the format of the X.121 address and the dynamic conversion between IP
address and X.121 address, please refer to ITU-T Recommendation X.121 and the
relative RFC document.
Related Command display interface