X.25 Protocols

Document ID: 12503

Contents

Introduction
Prerequisites
      Requirements
      Components Used
      Conventions
Background Information
Configure
      Network Diagram
      Configurations
Verify
Troubleshoot
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Related Information

Introduction

This document provides a sample configuration for X.25 over ISDN bi-directional call.

Prerequisites

Requirements

There are no specific requirements for this document.

Components Used

This document is not restricted to specific software and hardware versions.

The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, make sure that you understand the potential impact of any command.

Conventions

For more information on document conventions, refer to Cisco Technical Tips Conventions.

Background Information

Currently, Cisco IOS® Software enables circuit-switched X.25 clients, such as, Packet Assembler/Disassembler (PAD), X.25 switching, and Qualified Logical Link Control (QLLC), to initiate calls. It also enables them to dynamically bring the X.25 context (which runs the X.25 protocol) up or down as required. This capability allows packet-switched traffic over ISDN.

Configure

In this section, you are presented with the information to configure the features described in this document.

Note: To find additional information on the commands used in this document, use the Command Lookup Tool ( registered customers only) .

Network Diagram

This document uses this network setup:

Configurations

This document uses these configurations:

• Router A

• Router B

! 
isdn switch-type basic-5ess 
! 
  
! 
interface BRI0 
ip address 10.1.1.2 255.255.255.0 
no ip mroute-cache 
encapsulation x25 dce 
no ip route-cache 
x25 address 123 
x25 map ip 10.1.1.1 321 broadcast 
dialer map ip 10.1.1.1 name 1 broadcast 94591020 
dialer map ip 10.1.1.1 name 1 broadcast 294591020 
dialer-group 1 
! 
  
! 
dialer-list 1 protocol ip permit

! 
! 
isdn switch-type basic-5ess 
! 
! 
interface BRI1 
ip address 10.1.1.1 255.255.255.0 
encapsulation x25 
no ip route-cache 
no ip mroute-cache 
x25 address 321 
x25 map ip 10.1.1.2 123 broadcast 
dialer map ip 10.1.1.2 name 1 broadcast 99101650 
dialer map ip 10.1.1.2 name 1 broadcast 299101650 
dialer-group 1 
! 
ip classless 
! 
dialer-list 1 protocol ip permit

Verify

There is currently no verification procedure available for this configuration.

Troubleshoot

There is currently no specific troubleshooting information available for this configuration.

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Related Information

• Background X.25
• Integrated Services Digital Network
• Configuring X.25
• Configuring X.25 on ISDN
• Technical Support - Cisco Systems