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Appendix C
Firmware Upgrade and Downgrade Procedures
Step 3
Enter the dspadrcxat command. Note the value of the ConnNumOfValidEntries parameter.
This value indicates the number of connections. This command is run again at the end of the procedure
to ensure that the number of connections has not changed.
Step 4
For all SMs
Enter the dsptotals command.
a.
The configuration of the shelf should not be changed during the downgrade process. Use this step
to examine the number of lines, ports, and channels before the upgrade or downgrade. A similar
step can be made to examine the same configuration parameters after the upgrade or downgrade
and, therefore, it can be established that the configuration has remained the same.
b.
Enter the tftp put <ASC_BT_file> AXIS_ASC_BACKUP.FW command. This step downloads the
new boot code into the ASC.
c.
Enter the chkflash command. This command calculates and compares the Flash checksum to verify
whether the boot code is correct.
d.
Enter the version command. This command displays the version of the boot code currently stored
in Flash memory. This step downloads new firmware into the ASC.
e.
Enter the switchcc command to switch to the other ASC.
f.
Enter the tftp put <ASC_BT_file> AXIS_ASC_BACKUP.FW command. This step downloads the
new boot code into the second ASC.
Enter the chkflash command. This command calculates and compares the Flash checksum to verify
g.
whether the boot code is correct.
h.
Enter the version command. This command displays the version of the boot code currently stored
in Flash memory. This step downloads new firmware into the ASC.
i.
Enter the donotupdatestandby command.
j.
Enter the tftp put <ASC_FW_file> AXIS_ASC_STANDBY.FW command.
Check the file size of the downloaded firmware. Use this step to check the firmware was
k.
downloaded successfully to the ASC disk.
Enter the dspfwrevs command to verify the correct firmware revision.
l.
For all SMs, set the start and end addresses in Flash memory where the boot code file will be written.
Step 5
Enter the flashStartAddr and flashEndAddr commands to start the Flash memory file at
a.
0xbfc00000 and end it at 0xbfc40000
shelf.1.<slot>.<type><a|s>flashStartAddr = 0xbfc00000
shelf.1.<slot>.<type>.<a|s>flashEndAddr = 0xbfc40000
Enter the tftp put <SM_BT_file> AXIS_SM_1_$slot.FW command.
b.
Enter the chkflash command. This command calculates and compares the Flash checksum to verify
c.
whether the boot code is correct.
Enter the version command. This command displays the version of the boot code currently stored
d.
in Flash memory. This step downloads new firmware into the ASC.
For all SMs, set the start and end addresses in Flash memory where the firmware file will be written.
Step 6
Enter the flashStartAddr and flashEndAddr commands to start the Flash memory file at
a.
0xbfc40000 and end it at 0xbfd00000
shelf.1.<slot>.<type><a|s>flashStartAddr = 0xbfc40000
shelf.1.<slot>.<type>.<a|s>flashEndAddr = 0xbfd00000
Enter the tftp put <SM_FW_file> AXIS_SM_1_$slot.FW command.
b.
Release 5.0, Part Number 78-6430-03 Rev. D0, November 2003
Graceful Upgrade and Downgrade Procedures
Cisco MGX 8220 Installation and Configuration
C-25
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