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GDC 087R706-000-02
UAS 7626 DIU
5-23
The four command selections are
[1] Switch to Standby Firmware – commands the DIU to unzip (decompress) the stored,
inactive firmware and place it into service as the current operating firmware; at the same
time the DIU zips and stores the firmware that it had been operating with
[2] Disable All Downloads – commands the DIU not to accept download of firmware;
displayed as Download Mode when selected
[3] Enable Downloads and Store ZIP – commands the DIU to accept download of
firmware, storing the newly downloaded code as the zipped and inactive Standby Firmware
until it is placed into service by the Switch to Standby Firmware Now command; displayed
as Download Mode when selected
[4] Enable Downloads, UNZIP and Execute – commands the DIU to accept download of
firmware, immediately unzipping the newly downloaded code and placing it into operation,
while storing the former operating code as zipped and inactive Standby Firmware;
displayed as Download Mode when selected
The command selections establish the DIU’s response to the downloading of firmware. Trivial
File Transfer Protocol (TFTP) is used to perform the actual firmware download, using the follow-
ing procedure:
1.
Open a second window in which to perform the TFTP functions. Keep the Firmware Down-
load screen on display in order to monitor the Download Status.
2.
Initiate a TFTP session to the SCM.
3.
At the TFTP prompt type
bin
and press the Enter key so that the transfer takes place in binary mode.
4.
Type
trace
and press the Enter key so that activity is displayed during the transfer.
5.
Type
put "firmware filename" "address & product code"
and press the Enter key to initiate the actual transfer. The firmware filename is provided
with the firmware that is to be downloaded. The address portion of the address & product
code is the slot/line/drop address when you are downloading to a single unit. There is also
a broadcast code that enables you to send new firmware to all the UAS 7626 DIUs in a shelf
(or pair of shelves) at once. The figure on the following page provides further definitions
of the filename and address formats.