[6] Downline Upgrade
5-18 Configuring the Module in a DEChub ONE or DEChub ONE-MX
DLU Process Stages
The DLU process consists of four stages:
Table 5-1 explains what happens during each stage of the DLU process:
Table 5-1:
DLU Process Description
continued on next page . . .
Stage
Description
1
Transferring the image to the module’s temporary storage buffer
2
Verifying the image
3
Writing the new image into nonvolatile flash memory
4
Resetting module and self-test
Stage
Description
1
The DLU process transports the new firmware image across the
network from the TFTP load host and places it into a temporary
storage buffer in the module.
This stage normally takes 1 minute to complete. However, due to
variations in network configurations (load path and traffic levels), this
stage can take 10 minutes or more.
The following states indicate that this stage is in progress:
•
Module status – cannot respond to management requests
•
LED display – normal operation
•
Setup screen display –
When the series of dots ends, the screen displays the following
message:
DLU Process Started!
..................................
Transfer Complete.
