3Com OfficeConnect 3CRWE53172 User Manual

Also see for OfficeConnect 3CRWE53172: Datasheet Installation guide

Contents

88 CHAPTER 6: T ROUBLESHOOTINGmay wish to discuss this with your ISP. The Gateway logs such attacks,and this information is available through the Status and Logs screens.Recovering fromCorrupted SoftwareIf the Alert LED remains permanently on following power-up, it is possiblethat the system software has become corrupted. In this condition, theGateway will enter a “recovery” state; DHCP is disabled, and the LAN IPaddress is set to 192.168.1.1. Follow the instructions below to upload anew copy of the system software to a Gateway unit in this state.Ensure that one of your computers has a copy of the new software imagefile stored on its hard disk or available on CD-ROM.The latest software is available on 3Com’s Web site at:www.3com.com.1 Remove power from the Gateway and disconnect the Cable/DSL modemand all your computers, except for the one computer with the softwareimage.2 You will need to reconfigure this computer with the following static IPaddress information:■ IP address: 192.168.1.2■ Subnet mask: 255.255.255.0■ Default Gateway address: 192.168.1.13 Restart the computer, and re-apply power to the Gateway.4 Using the Web browser on the computer, enter the following URL in thelocation bar:http://192.168.1.1.This will connect you to the Microcode Recovery utility in the Gateway.5 Follow the on-screen instructions. Enter the path and filename of thesoftware image file.6 When the upload has completed, the Gateway will restart, run theself-test and, if successful, resume normal operation. The Alert LED willgo out.7 Refer to the Installation Guide to reconnect your Gateway to theCable/DSL modem and the computers in your network. Do not forget toreconfigure the computer you used for the software upload.