X.25 Protocols

Document ID: 14214

Contents

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

Introduction

Permanent Virtual Circuit or Connection (PVC) is a virtual circuit that is permanently established. PVCs save bandwidth associated with circuit establishment and tear down in situations where certain virtual circuits must exist all the time.

Switched Virtual Circuit (SVC) is a virtual circuit that is dynamically established on demand and is torn down when transmission is complete. SVCs are used in situations where data transmission is sporadic.

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.

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 this configuration:

! 
 x25 routing 
 ! 
 ! 
 interface Serial2 
  no ip address 
  no ip directed-broadcast 
  encapsulation x25 dce 
  no ip route-cache 
  no ip mroute-cache 
  x25 ltc 32 
  x25 htc 700 
  clockrate 9600 
 ! 
 interface Serial3 
  no ip address 
  no ip directed-broadcast 
  encapsulation x25 dce 
  no ip route-cache 
  no ip mroute-cache 
  x25 address 201700 
  x25 ltc 128 
  x25 idle 2 
  x25 pvc 5 svc 101600 packetsize 128 128 windowsize 2 2 
  x25 pvc 6 svc 101600 packetsize 128 128 windowsize 2 2 
  clockrate 9600 
 !

Verify

There is currently no verification procedure available for this configuration.

Troubleshoot

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

Related Information

• Technical Support - Cisco Systems