Cabletron Systems CSX1000, CSX1200 manual Accesses, Configuring AN X.25 Access

USER’S GUIDE

X.25 ACCESSES

CONFIGURING AN X.25 ACCESS

Note the following:

•X.25 accesses are available only if you have purchased the additional software module for packet switched accesses.

•To establish virtual circuits over X.25, you must enable device level security (page 139).

•You may only configure one X.25 access per CyberSWITCH, and one line per access.

•Bearer channels used by X.25 accesses can not be shared by other access types.

•Compression is not available over X.25 connections.

•For X.25 over a D-Channel, you must configure the datalink (for the line you are using) to sup- port X.25 communications (page 92).

USING CFGEDIT

To add an X.25 access, several categories of information must be configured, including basic configuration information including line information, Link Access Procedure Balanced (LAPB) parameters (not required for X.25 over a D-Channel), X.25 parameters, and finally, virtual circuit parameters. A separate section for configuring each of the above categories follows.

Notes: If you are unsure of a value, select the default value if one is provided. If you want to change an existing X.25 access configuration, select the “change” option from the main X.25 Access menu. A submenu will display the various categories described below. You can then select to edit individual categories without paging through all of the parameters. It is important to note that the line used for an existing X.25 access cannot be changed. Individual characteristics of the line can change, for example, the data rate, bearers, or Public Packet Switched Network (PPSN) phone number. If another line is to be used, the existing access must be deleted, and added back in.

BASIC CONFIGURATION INFORMATION

1.Select Access from the Physical Resources menu, then follow the onscreen instructions to add an X.25 access.

2.You will be asked whether or not a D-channel is to be used for this access. A list of available lines will be displayed dependent on your answer. For X.25 over a D-Channel, you must select a line with a data link configured to support X.25 communications (page 92). Select the line Id this access will be using. A BRI line that is in use by another type of access will not be available for use by an X.25 access.

3.Enter an X.25 access name of 1 to 16 non-blank, alpha-numeric characters. The X.25 access name is a user-defined name and is provided as an aid in helping you track events occurring on an X.25 access.

4.Enter the X.121 address of the local DTE (the CyberSWITCH).

5.If you are configuring this access for a D-channel to be used, skip to X.25 Configuration Information to continue your configuration. The rest of the basic configuration information and LAPB configuration information is not needed.

6.Select the data rate for the line.

198 CyberSWITCH