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DECbridge900MX load procedure for corrupted FLASH:
If the FLASH is corrupted during a load the following procedure
must be used to reload the bridge with firmware. (This WILL
happen if the power is removed from the module while an update
process is in progress.)
The DECbridge900MX will send out a BootP request to the broadcast
address on bridge port 2 only. The source address for this
request uses the address of the first port of the bridge (FDDI port.)
This is the address printed on the back of the module.
You have to configure your BootP Server to respond to this request.
The exact procedure for this depends on your BootP Server.
But as an example this is how an Ultrix DECathena BootP Server
would be configured:
Add the following line to /etc/bootptab
db900:ht=1:ha=08002ba34b08:ip=16.20.216.186:bf=//db900mx_11.bin
The format used for the filename in this line depends on your TFTP
Server. Again the example above is for an Ultrix DECathena system.
The db900mx_11.bin would be copied to the /tftpd directory on
this type of system.
Once the bridge is connected to the network via port 2 and powered
up, it will send out the BootP request. Assuming the BootP and
TFTP servers are configured correctly, the LEDs will inform the
user of the status of the load.
Step 1: Configure the BootP and TFTP Servers
Step 2: Connect an AUI cable from your network to Port 2 of the bridge.
Step 3: Power up the bridge.
The LED for port 1 will light green. This signals that BootP
requests are being sent out.
The second LED will light green after the BootP response is
received. This signals that the TFTP process has started.
This should only take 5 to 60 seconds (depends on your network
and server load).
The third LED will light green after the TFTP transfer is complete.
This signals that a CRC of the image is being performed.
This takes approximately 2 seconds.
The fourth LED will light green to signal the CRC was correct and
that the FDDI processor is being loaded with a new FLASH image.
This takes approximately 40 seconds.
The fifth LED will light green to signal the FDDI processor's FLASH
was loaded and that the main processor's FLASH is now being
programmed.
This takes approximately 2 MINUTES.
The LEDs will then alternate between Green and Amber for 10
seconds.
After the flashing of the LEDS, there is a 10 seconds of no action,
ie all LEDS shut off before the box reboots and runs diagnostics.
If all LEDS are lit amber that indicates an error, probably
requiring field service to come in.
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