Specifications

A-5
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
Quickstart Procedures for Software Upgrades
Graceful PXM45, AXSM, and FRSM-12 Runtime Software Upgrades
When performed properly, graceful upgrades have minimal impact on connections in progress and do
not interrupt any established connections.
This quickstart procedure applies to PXM45, AXSM, and FRSM-12 cards. Use the procedure to perform
the following tasks:
1. Loads the new software on the standby PXM45, AXSM, or FRSM-12 card.
2. Makes the standby card active.
3. Loads the new software on the formerly active (now standby) card.
Note If you plan to upgrade PXM45 cards and AXSM or FRSM-12 cards, upgrade the PXM45 cards first. Wait
until the PXM45 cards are operating in active and standby modes with the correct software before
upgrading AXSM or FRSM-12 cards. The software version used by the PXM45/B cards should be equal
to or later than the version used on the AXSM, AXSM/B, AXSM-E, AXSM-32-E, and FRSM-12 cards.
When AXSM or FRSM-12 boot software is to be upgraded, it should be upgraded before upgrading the
runtime software.
Caution Avoid making configuration changes while upgrading PXM45 software. Configuration changes can be
lost when the PXM45 is reset during the upgrade. While graceful upgrades can be aborted with the
abortrev command, the abortrev command does reset both active and standby cards, so reverting back
to an earlier software release is non-graceful.
Step 3
saveallcnf This optional step saves the current configuration to the hard disk.
See the “Saving a Configuration” section in Chapter 7, “Switch
Operating Procedures.”
Step 4
sh
sysBackupBoot
<Return> (2.0.11 and earlier)
Change to the PXM45 Backup Boot mode.
Note that the software versions 2.0.11 and earlier require you to
press Return during the reboot sequence to enter backup boot
mode.
See the “Changing to PXM45 Backup Boot Mode” section in
Appendix B, “PXM45 Backup Boot Procedures.”
Step 5
sysPxmRemove If there are two PXM45 cards installed in the switch, enter the
sysPxmRemove command to prevent the active card from
resetting the standby card while you are working with it.
Step 6
sysFlashBootBurn “Filename”
reboot
username
password
dspcd
Burn the boot code. Remember to enter quotation marks before
and after the boot software filename. For example:
sysFlashBootBurn "C:FW/pxm45_003.000.000.000_bt.fw"
See the “Upgrading PXM45 Boot Software” section, which
appears later in this appendix.
Command Purpose