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C-48
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
Description of Upgrade/Downgrade Terminology
Save/Restore SM Configuration
The ASC card stores service module (SM) configuration information on the disk in a configuration
(PRI) file. The file contains a revision which identifies the format of the configuration information. The
format can change from release to release. The newer version of firmware always provides conversion
routines which automatically reformat the configuration information as part of an upgrade. However,
there is no support for reformatting as part of a firmware downgrade.
If the SM configuration file revision is different between the firmware revisions involved in an upgrade,
the configuration file should be saved for each primary and stand-alone SM using:
tftp shelf
tftp> bin
tftp> get AXIS_SM_1_<slot>.PRI.<service password>
tftp> quit
In general, it is recommended to save the SM configuration file for each primary and stand-alone SM
prior to any upgrade. If the SM configuration file revision is different between the firmware revisions
involved in a downgrade, the configuration file should be restored for each primary and stand-alone SM
using:
tftp shelf
tftp> bin
tftp> put AXIS_SM_1_<slot>.PRI.<service password>
tftp> quit
The standby ASC card must be reset in order to download the SM configuration files from the active
ASC card. Each primary and stand-alone SM must be reset in order to run the saved configuration. If
the SM configuration file revision is the same between the firmware revisions involved in a downgrade,
the SM configuration should be preserved (there is no need to restore the configuration).