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
Upgrade Procedures for PXM45, AXSM, and FRSM-12 Cards
Starting the Upgrade Software
After you load the runtime upgrade software for a PXM45, AXSM, or FRSM-12 card, enter the runrev
command to start using the software. The version levels for graceful and non-graceful upgrades change
as shown earlier in Table A-2 and Table A-3. The following procedure describes how to start the upgrade
software.
Step 1 To start using the new runtime software version on a PXM45, AXSM, or FRSM-12 card, enter the
following command:
mgx8850a.7.PXM.a > runrev <slot> <revision>
Replace <slot> with the card slot number, and replace <revision> with the same software version
number you specified with the loadrev command. For graceful upgrades, you can specify either the
active or the standby card. The switch software will automatically run the upgrade software on the
standby card when it is installed. The following example shows how to enter this command:
mgx8850a.7.PXM.a > runrev 7 2.1(0)
The active card is reset, and the former standby card comes up in the active-U state.
Step 2 When prompted to confirm the command, type y and press Return to continue.
Step 3 To verify that the load command was processed correctly, enter the dspcd <slot> command and check
the status of the software revision levels. You can also view the revision levels with the dsprevs
command.
Step 4 When the former active PXM45 come sup in the standby-U state, enter the commitrev command to
commit to that software version. This step is optional.
After the runrev command is entered, the switch starts running the new software revision. The
secondary software revision shows that a previous revision is still available. Whenever the secondary
software revision is different from the primary and current software revisions, you can revert back to the
secondary software revision as described in the “Aborting a Runtime Software Upgrade” section, which
appears later in this appendix.
Upgrading Boot Software on an AXSM or FRSM-12 Card
The upgrade procedure for the boot software on a single AXSM or FRSM-12 card is the same for
graceful and non-graceful upgrades. The difference between the graceful and non-graceful upgrades is
the sequence of commands before and after the upgrade on a single card. For information on the proper
sequence see the “Graceful AXSM or FRSM-12 Boot Upgrades” section or the “Non-Graceful AXSM
Boot Upgrades” section, both of which appear earlier in this appendix.
To upgrade the boot software, use the following procedure.
Step 1 Copy the new boot software files for the AXSM or FRSM-12 card to the switch as described in the
“Copying Software Files to the Switch” section, which appears earlier in this appendix.
Step 2 Establish a CLI session with the switch using a user name with SERVICE_GP privileges or higher.
Step 3 To burn the new AXSM or FRSM-12 boot code, enter the burnboot command as follows:
pop20one.7.PXM.a > burnboot <slot> <revision>