Recovering From Corrupted Software; Frequently Asked Questions - 3Com OfficeConnect 3CR856-95 User Manual

If the Alert LED comes on continuously again, then a fault has
been detected. Locate the copy of the Gateway software on
the accompanying CD-ROM 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
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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 configuration screens.

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 Gateway will enter a failsafe 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
CD-ROM.
1 Remove power from the Gateway and disconnect the Cable/DSL
modem and all your computers, except for the one computer
with the software image.
You will need to reconfigure this computer with the following
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static IP address information:
IP address: 192.168.1.2
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Subnet mask: 255.255.255.0
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Default Gateway address: 192.168.1.1
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Restart the computer, and re-apply power to the Gateway.
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4 Using the Web browser on the computer, enter the following
URL in the location bar: http://192.168.1.1. This will connect
you to the failsafe mode of the Gateway.
5 Follow the on-screen instructions. Enter the path and filename of
the software image file.
When the upload has completed, the Gateway will restart, run
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the self-test and, if successful, resume normal operation. The
Alert LED will go out.
Refer to the Installation Guide to reconnect your Gateway to the
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Cable/DSL modem and the computers in your network. Do not
forget to reconfigure the computer you used for the software
upload.
If the Gateway does not resume normal operation following the
upload, it may be faulty. Contact your supplier for advice.

Frequently Asked Questions

How many computers on the LAN does the Cable/DSL
Secure Gateway support?
A maximum of 253 computers on the LAN are supported.
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