Specifications

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Cisco MGX 8850 (PXM45) and MGX 8950 Software Configuration Guide
Release 3, Part Number 78-14788-01 Rev. C0, January 2004
Appendix A Downloading and Installing Software Upgrades
Browsing the File System
Non-Graceful AXSM Runtime Software Downgrades
AXSM runtime software downgrades are always non-graceful when the PXM45 runtime software is also
downgraded (because the PXM45 downgrade requires a clearing of the configuration). The quickstart
procedure is provided as an overview of how to downgrade the AXSM software after the PXM45 runtime
software has been downgraded.
Browsing the File System
The PXM45 hard disk stores log files, configuration files, and boot and runtime software. The switch
operating system supports a set of UNIX-like commands that you can use to locate log files or manage
software updates. Table A-1 lists commands that you can use to browse the file system.
Note File and directory names in the switch file system are case sensitive. Also, some of the commands listed
in Table A-1 are not available at all administrator access levels.
Step 4
clrallcnf
y
Clear the current configuration.
See “Clearing a Configuration” in Chapter 7, “Switch Operating
Procedures.”
Step 5
sysVersionSet “version”
reboot
Select the runtime firmware version the switch will use on the
PXM45 card and restart the switch with that firmware. For
example:
sysVersionSet "002.001.000.000"
Note that these commands must be entered at the PXM45 backup
boot prompt: pxm45bkup>.
Refer to “Initializing the Switch” in Chapter 2, “Configuring
General Switch Features.”.
Step 6
Reconfigure the PXM45 cards as described in “Configuration
Quickstart” in Chapter 2, “Configuring General Switch
Features.”
Command Purpose
Command Purpose
Step 1
ftp Copy the boot and runtime files you want to use to the switch.
See “Copying Software Files to the Switch,” which appears later
in this appendix.
Step 2
Refer to “Configuration Quickstart” Chapter 3, “Preparing
AXSM Cards and Lines for Communication.”
The setrev command in the quickstart procedure clears the card
configuration and assigns the downgrade software version to the
card.