IBM Networking

Document ID: 12298

Contents

Introduction
Prerequisites
      Requirements
      Components Used
      Conventions
Configure
      Network Diagram
      Configuration
Verify
Troubleshoot
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Introduction

This document provides a sample configuration for data-link switching (DLSw+) local switching of Synchronous Data Link Control (SDLC) to Qualified Logical Link Control (QLLC).

Prerequisites

Requirements

There are no specific requirements for this document.

Components Used

The information in this document is based on Cisco IOS® software version 11.1, or greater.

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

Refer to Cisco Technical Tips Conventions for more information on document conventions.

Configure

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

Note: Use the Command Lookup Tool ( registered customers only) to find more information on the commands used in this document.

Network Diagram

This document uses this network setup:

Configuration

This document uses this configuration:

• DLSw+ local switching of SDLC to QLLC

x25 routing 
source-bridge ring-group 999 
dlsw local-peer 
interface Serial0 
description X.25 QLLC to FEP 
no ip address 
no ip mroute-cache 
encapsulation x25 
x25 address 1199015 
x25 htc 100 
x25 win 7 
x25 wout 7 
x25 ips 256 
x25 ops 256 
x25 map qllc 4000.2500.0001 1000621 
qllc dlsw vmacaddr 4000.2500.0001 

interface Serial1 
description SDLC Line 
no ip address 
encapsulation sdlc 
no keepalive 
sdlc role primary 
sdlc vmac 4000.3174.0000 
sdlc poll-pause-timer 200 
sdlc address C1 
sdlc xid C1 017A0909 
sdlc partner 4000.2500.0001 C1 
sdlc line-speed 19200 
sdlc dlsw C1 

x25 route 1000621 interface Serial0 
bridge 10 protocol ieee 

Note: This configuration works for Physical Unit 2 (PU 2.0) and Physical Unit type 2.1 (PU 2.1) devices. For PU 2.0 devices, you need to configure qllc dlsw npsi-poll on the X.25 line where the front-end processor (FEP) is attached.

The FEP can be on the SDLC interface as well as the X.25 interface. For a sample configuration of the FEP on the SDLC side, refer to Configuring Local SDLC to QLLC Using DLSw.

If calls can be originated on the X.25 interface, you need a partner clause in the qllc dlsw statement.

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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