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C-30
Cisco MGX 8220 Installation and Configuration
Release 5.0, Part Number 78-6430-03 Rev. D0, November 2003
Appendix C Firmware Upgrade and Downgrade Procedures
Graceful Upgrade and Downgrade Procedures
Step 4 For all primary and stand-alone SMs, enter the dsptotals command.
The configuration of the shelf should not be changed during the upgrade or downgrade process. Use this
step to examine the number of shelf connections. 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.
Step 5 For all SMs, set the start and end addresses in Flash memory where the firmware file will be written.
a. Enter the flashStartAddr and flashEndAddr commands to start the Flash memory file at
0xbfc00000 and end it at 0xbfc40000
shelf.1.<slot>.<type><a|s>flashStartAddr = 0xbfc00000
shelf.1.<slot>.<type>.<a|s>flashEndAddr = 0xbfc40000
b. Enter the tftp put <SM_BT_file> AXIS_SM_1_$slot.FW command.
c. Enter the chkflash command. This command calculates and compares the Flash checksum to verify
whether the boot code is correct.
d. Enter the version command. This command displays the version of the boot code currently stored
in Flash memory. This step downloads new firmware into the ASC.
Step 6 For all SMs
a. Enter the flashStartAddr and flashEndAddr commands to start the Flash memory file at
0xbfc40000 and end it at 0xbfd00000
shelf.1.<slot>.<type><a|s>flashStartAddr = 0xbfc40000
shelf.1.<slot>.<type>.<a|s>flashEndAddr = 0xbfd00000
b. Enter the tftp put <SM_FW_file> AXIS_SM_1_$slot.FW command.
c. Enter the chkflash command. This command calculates and compares the Flash checksum to verify
whether the boot code is correct.
Step 7 For all stand-alone SMs, enter the resetcd command <stand-alone_SM>.
Step 8 For all primary SMs in all redundancy groups
a. Enter the resetcd command <primary_SM>.
b. Enter the resetcd command <secondary_SM>.
Step 9 For all primary and stand-alone SMs in all redundancy group, enter the dsptotals command.
Use this step to examine the number of shelf connections, lines, ports, and channels after the upgrade
or downgrade. The values can be compared to those before the download and, therefore, it can be
established that the configuration has remained the same. Restore ASC and SM configurations if
necessary.