Specifications

B-2
Cisco MGX 8850 (PXM45) and MGX 8950 Software Configuration Guide
Release 3, Part Number 78-14788-01 Rev. C0, January 2004
Appendix B PXM45 Backup Boot Procedures
Changing to PXM45 Backup Boot Mode
Step 3 At the shell prompt, enter the enter the sysBackupBoot command:
pxm45> sysBackupBoot
Note This command and all commands that you enter in shell mode are case sensitive.
The PXM45 card reboots after you enter this command.
Tip If you are accessing the CP port through a terminal server, rebooting the PXM45 may disrupt
your connection. Random characters may appear on the display or the display may appear to
“hang.” If this happens, use your terminal software command to reset the terminal connection.
After a successful reset, switch status messages should start appearing on the display.
When the reboot is complete, the following PXM45 Backup Boot banner appears:
PPPPPPPPPPP XXX XXX M M 4444 555555555
PP PP XX XX MM MM 44 44 55
PP pp XX XX MMM MMM 44 44 55 555
PP pp XX XX MMMM MMMM 44 44 5555 55
PP PP XXXX MM MMMMM MM 44 44 55 55
PPPPPPPPP XX XX MM MMM MM 44444444444 55
PP XX XX MM MM 44 55 55
PP XX XX MM MM 44 55 55
PPPP XXX XXX MMMM MMMM 4444 5555
PXM45 BACKUP BOOT
To avoid reset from the Active card, use sysPxmRemove()
pxm45bkup>Use sysFWLoad() for FW download from active PXM.
Step 4 When the PXM45 Backup Boot banner appears, press return to display the backup boot prompt:
pxm45bkup>
When the backup boot prompt appears, you are in backup boot mode.
Caution Some backup boot mode commands, such as debug commands, can consume switch resources and
reduce switch performance. Cisco recommends that you only execute backup boot commands described
in the product documentation. Experimenting with some commands can degrade switch performance or
interrupt switch operation completely.
Step 5 If the PXM45 you restarted is the standby card for an active PXM45 card in the same switch, enter the
sysPxmRemove command to prevent the active card from restarting the card you are working on.
Tip To display a list of commands available in backup boot mode, enter the help command.