3Com 3CRWE41196 User Guide - Page 56

Alert LED, Recovering from Corrupted Software

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56 CHAPTER 5: TROUBLESHOOTING Access Point. In an ideal network the Access Point should be located in the centre of the network with Wireless computers distributed around it. Applications are generally available with the computer wireless card to carry out a site survey. Use this application to find the optimal siting for your wireless computer. Consult your Wireless Card documentation and vendor for more details. Alert LED The Alert LED will flash when the Access Point unit is first powered up while the system software checks the hardware for proper operation. Once the Access Point has started normal operation, the Alert LED will go out. ■ If the Alert LED does not go out following start up, but illuminates continuously, this indicates that the software has detected a possible fault with the hardware. Remove power from the Access Point, wait 10 seconds and then re-apply power. If the Alert LED comes on continuously again, then a fault has been detected. Locate the copy of the Access Point software on the accompanying CD-ROM or 3Com web site (http://www.3com.com) and upload it to the Access Point to see if this clears the fault (refer to "Recovering from Corrupted Software" below). If this does not fix the problem, contact your supplier for further advice. Recovering from Corrupted Software If the Alert LED remains permanently on following power-up, it is possible that the system software has become corrupted. In this condition, the Access Point will enter a "recovery" state; DHCP is disabled, and the LAN IP address is set to 192.168.1.1. Follow the instructions below to upload a new copy of the system software to a Access Point unit in this state. Ensure that one of your computers has a copy of the new software image file 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 Access Point and connect the admin computer to the LAN port. 2 You will need to reconfigure this computer with the following static IP address information:

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56
C
HAPTER
5: T
ROUBLESHOOTING
Access Point. In an ideal network the Access Point should be located
in the centre of the network with Wireless computers distributed
around it. Applications are generally available with the computer
wireless card to carry out a site survey. Use this application to find the
optimal siting for your wireless computer. Consult your Wireless Card
documentation and vendor for more details.
Alert LED
The Alert LED will flash when the Access Point unit is first powered up
while the system software checks the hardware for proper operation.
Once the Access Point has started normal operation, the Alert LED will go
out.
■
If the Alert LED does not go out following start up, but illuminates
continuously, this indicates that the software has detected a possible
fault with the hardware. Remove power from the Access Point, wait
10 seconds and then re-apply power. If the Alert LED comes on
continuously again, then a fault has been detected. Locate the copy of
the Access Point software on the accompanying CD-ROM or 3Com
web site (
) and upload it to the Access Point to
see if this clears the fault (refer to “Recovering from Corrupted
Software” below). If this does not fix the problem, contact your
supplier for further advice.
Recovering from
Corrupted Software
If the Alert LED remains permanently on following power-up, it is possible
that the system software has become corrupted. In this condition, the
Access Point will enter a “recovery” state; DHCP is disabled, and the LAN
IP address is set to 192.168.1.1. Follow the instructions below to upload
a new copy of the system software to a Access Point unit in this state.
Ensure that one of your computers has a copy of the new software image
file 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 Access Point and connect the admin computer
to the LAN port.
2
You will need to reconfigure this computer with the following static IP
address information: