1-8 CHAPTER 1: INTRODUCTION

Ethernet LAN

Edge Router Module

Console

Aux

 

 

 

 

 

Port

Port

 

 

 

 

 

 

WAN Port

WAN Port

Remote Site

 

Public

 

 

 

Switched

Dial-Up

Primary

Secondary

Telephone

Link

Link

Link

 

Network

 

 

 

 

 

 

 

 

 

 

 

 

Main Site

Main Site Router

Main Site Network Connections

Figure 1-3 Network Reliability Configuration

IOS Router The IOS software in the Edge Router module engine can be updated by Software Updates purchasing field-upgradeable software distribution kits. Update your

module to the latest 3Com release of IOS software by downloading new code to flash memory on the module. New updates are shipped automatically as part of the 3Com 1-year Router Software Subscription Service or you can purchase it from 3Com as a single unit update.