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C-36
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
e. Enter the resetcd <standby_ASC> command. This command resets the standby card.
f. Enter the resetcd <active_ASC> command. This command resets the active card.
Step 6 For all SMs
a. Enter the tftp put <SM_FW_file> AXIS_SM_1_$slot/0.FW command.
b. Check the file size of the downloaded firmware. Use this step to check that the firmware was
downloaded successfully to the ASC disk.
c. Enter the dspfwrevs command to verify the correct firmware revision.
Step 7 For all stand-alone SMs, enter the resetcd <stand-alone>command. This command resets the
stand-alone card.
Step 8 For all primary SMs in all redundancy groups
a. Enter the softswitch <primary_SM> command.
b. Enter the softswitch <secondary_SM> command.
Step 9 For all SMs, enter the dsptotals command.
Use this step to examine the number of lines, ports, and channels after the upgrade or downgrade. The
values can be compared to those before the download and, therefore, it can be established that the
configuration has remained the same. Restore the ASC and SM configurations if necessary.
Procedure 22—Graceful Downgrade, 1-Core Card Set (SM only)
Procedure 22 is used for 4.x to 4.y, 4x to 5.x, and 5.x to 5.y.
Step 1 Save the current ASC configuration. Perform this step for the ASC prior to upgrading the firmware.
First reset the card, then use TFTP get to save the card’s current configuration in the workstation.
tftp shelf
tftp> bin
tftp> get AXIS_ASC_ACTIVE.BR
Step 2 Save the current service module (SM) configuration for each primary and stand-alone SM. Perform this
step for the SM prior to upgrading the firmware.
First reset the card, then use TFTP get to save the card’s current configuration in the workstation.
tftp shelf
tftp> bin
tftp> get AXIS_SM_1_<slot>.PRI.<service password>
Step 3 For all SMs, enter the dsptotals command.
The configuration of the shelf should not be changed during the upgrade or downgrade process. Use this
step to examine the number of shelf connections. A similar step can be made to examine the same
configuration parameters after the upgrade or downgrade and, therefore, it can be established that the
configuration has remained the same.
Step 4 For all SMs
a. Enter the tftp put <SM_BT_file> AXIS_SM_1_$slot.FW command.
b. Enter the chkflash command. This command calculates and compares the Flash checksum to verify
whether the boot code is correct.