X.25 Support Over ISDN BRI D-Channel (X.31) ............322
Null Encapsulation .......................322
Limitations .........................322
Configuration Changes ....................322
Configuring Null Encapsulation and Closed User Groups (CUG) .....322
Understanding Closed User Groups.................324
Bilateral Closed User Groups ..................324
Types of Extended Closed User Groups ..............324
Establishing X.25 Circuits with Closed User Groups on a Device .....324
Configuring X.25 Closed User Groups ...............325
Chapter 27. Configuring and Monitoring the X.25 Network Interface ...327
X.25 Configuration Commands...................327
Set............................328
Enable ..........................332
Disable ..........................332
National Enable .......................333
National Disable .......................335
National Set ........................336
National Restore .......................340
Add............................341
Change ..........................348
Delete...........................349
List ............................350
Accessing the Interface Monitoring Process ..............353
X.25 Monitoring Commands....................353
List ............................354
Parameters .........................354
Statistics..........................355
X.25 Network Interfaces and the GWCON Interface Command .......356
Statistics Displayed for X.25 Interfaces...............356
Chapter 28. Using XTP .....................361
The X.25 Transport Protocol ...................361
Configuration Information....................362
DTE Address Wildcards .....................363
XTP Backup Peer Function ....................364
Searching for a Remote DTE ..................364
Connection Request Timer ...................365
Local XTP ..........................365
XTP and Closed User Groups ...................365
Configuring XTP ........................366
Configuration Procedures.....................366
Setting the Data Link .....................367
Configuring the IP Interface ...................367
Configuring X.25 .......................367
Setting the National Personality .................369
Defining the IP Address ....................369
Setting the Internal IP Address..................369
Configuring XTP .......................369
Sample Configuration of Remote Routers..............371
Chapter 29. Configuring and Monitoring XTP ............375
XTP Configuring Commands ...................375
Add............................375
Change ..........................378
Contents xi