X.25 Services Setup Using the Configurator

You configure the X.25 services starting with the physical layer and continuing upward to the LAPB and packet (X.25) layers. The initial setup procedure of the X.25 services, using the Configurator, is as follows:

1. Define the physical ports as X.25.

Select Configure and Physical Interfaces from the navigation menu:



Select the type of port (serial, ISDN, CSU) you want to configure for X.25 operation. Then, select the physical port (the example screens show Passport 4460 hardware with Port 3 on the base being used for X.25):



The Physical Port Configuration screen will be displayed. The two parameters that need your attention at this point are:

• Mode: in most instances, the Passport 4400 unit would be acting as an X.25 DCE. You would select that mode in this field. As the X.25 DCE, the unit will be providing the clocking for this connection.
• Protocol Supported: select X.25 from the pull down menu, as follows:



Click on the Save button. "Command Successful" should be displayed when the unit finishes setting the configuration.

2. Add the routing information for the physical port. Select Configure, WAN/Data Services, and X.25 from the navigation menu:



You will see the X.25 Service screen. Select X.25 Routing (Physical Port) from the Configuration options:



The configuration wizard presents you with a series of screens to complete. When you complete these screens, the physical routing information is configured. The screens presented are:

• X.25 Port Selection. Select the port from the pull down menu:



• Modify a Packet Level Interface. Complete this form as required by your network.
• Add a X.25 Route (Physical):

Enter an index number for this route and the X.25 address pattern. An asterisk (*) can be used as part of the X.25 address pattern. Click on the Save button.

At this point, the X.25 Service screen is displayed, with the following text indicating that the unit's X.25 configuration has changed and that a reset is required:

Do not reset the unit at this time. Continue on to step 3.