Cisco Systems MGX 8220 Procedure 22Graceful Downgrade, 1-Co re Ca rd Set (SM only)

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 Procedu res
e. Enter the resetcd <standby_ASC> command. This command resets the standby card.
f. Enter the resetcd <active_ASC> command. This com ma nd 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 download ed firmw ar e. Use this step to check that the firm w ar e w as
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, p or t s, an d ch an n els af t er the upgr ad e o r downgr ad e. Th e
values can be compared to those b ef or e t h e d ownlo ad a nd, therefore, it can be establ is h ed th at th e
configuration has remained the same. Restore the ASC and SM configurations if necessary.
Procedure 22—Graceful Downgrade, 1-Co re Ca rd 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 u se T FTP 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) co nfiguration for each primary and stand- alone SM. Perform this
step for the SM prior to upgrading the firmware.
First reset the card, then u se T FTP 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 shou ld not be cha nged duri ng the upgr ade or downgr ade proc ess. Use this
step to examine the number of sh elf c on n ect io ns. A similar step can be made to ex am i ne th e s ame
configuration parameters after t he u pg rad e o r dow n grad e and, therefore, it can be establis h ed t ha t t he
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 ca lculates and compares the Flash ch ecksum to verify
whether the boot code is correct.