Alert LED 79
| 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 Computer Card |
| documentation and vendor for more details. |
|
|
Alert LED | The Alert LED will flash when the Gateway unit is first powered up while |
| the system software checks the hardware for proper operation. Once the |
| Gateway 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 Gateway, wait 10 |
| seconds and then |
| continuously again, then a fault has been detected. Locate the copy of |
| the Gateway software on the accompanying |
| site (http://www.3com.com) and upload it to the Gateway 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. |
| ■ During normal operation, you may notice the Alert LED lighting briefly |
| from time to time. This indicates that the Gateway has detected a |
| hacker attack from the Internet and has prevented it from harming |
| your network. You need take no specific action on this, unless you |
| decide that these attacks are happening frequently in which case you |
| may wish to discuss this with your ISP. The Gateway logs such attacks, |
| and this information is available through the Status and Logs screens. |
|
|
Recovering from | If the Alert LED remains permanently on following |
Corrupted Software that the system software has become corrupted. In this condition, the Gateway 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 Gateway 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
The latest software is available on 3Com’s Web site at:
www.3com.com.
