Cisco LAN2LAN Software

Document ID: 15013

Contents

Introduction
Prerequisites
      Requirements
      Components Used
Network Types
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Introduction

This document discusses LAN2LAN/X.25 and XCI - X.25 Network Types.

Prerequisites

Requirements

There are no specific requirements for this document.

Components Used

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

Network Types

Both the LAN²LAN/X.25 and XCI configuration allow you to select a Network Type for each line on the Link Main Parameters menu. This Network Type has these choices:

• N/A

• DDN

• Telenet/Sprintnet

• Point-to-point (not used in XCI)

You should normally select N/A unless you see your network type in this list.

If you select DDN, then LAN²LAN or XCI plays a passive role in setting up the link and waits for the DDN network to get in touch with it. This is a requirement for Department of Defense Networks.

If you select Sprintnet, then LAN²LAN or XCI changes its behavior to conform to Sprintnet requirements. These are as follows:

1. Calls are rejected if they contain any facility code not listed here:

   Table: Reverse Charges
        -----------------------------------
        REVERSE CHARGE                 01
        ===================================
        Fast select                    01
        Packet size negotiation        42
        Window size negotiation        43
        National marker                00
        Charging                       04
        Charging money                 C5
        Charging segment               C2
        Charging duration              C1
        Charging redirect              C3
        Throughput negotiation         02
        Network user ID                C6
        -----------------------------------

2. For LAN²LAN/X.25, packet and window size negotiation is included in call packets, even though the size matches the default for the link.

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