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Catalyst 6500 Series Switch Software Configuration Guide—Release 8.7
OL-8978-04
Chapter 23 Configuring Redundancy
MSFC Redundancy
Step 2 Send a Break signal to get into the problematic MSFC’s ROMMON (the break will work if the MSFC is
continually rebooting). You need to time the break so that it is issued after the system bootstrap message,
but before the main Cisco IOS image is decompressed (see the two arrows in the following display
output):
System Bootstrap, Version 12.0(3)XE, RELEASE SOFTWARE
Copyright (c) 1998 by cisco Systems, Inc.
Cat6k-MSFC platform with 131072 Kbytes of main memory <======= ISSUE BREAK AFTER THIS
POINT
Self decompressing the image :
######################################################################################
[OK]
<==========BUT BEFORE THIS POINT
Self decompressing the image :
##########################################################################################
##########################################################################################
##########################################################################################
##########################################################################################
##########################################################################################
##########################################################################################
##########################################################################################
##########################################################################################
### [OK]
Step 3 At the ROMMON prompt, enter the confreg command:
a. Enter y at the “do you wish to change the configuration? y/n [n]:” prompt.
b. Press Enter to accept the default for all questions until you reach this prompt: “change the boot
characteristics? y/n [n]:”
c. Enter y.
d. Enter 0 to select the “0 = ROM Monitor” option at the next prompt.
e. Review the Configuration Summary to ensure the following value: boot: the ROM Monitor.
f. You are again prompted with: “do you wish to change the configuration? y/n [n]:”
g. Enter n.
h. You are returned to the ROMMON prompt.
Step 4 Enter the reset command and verify that the MSFC boots into ROMMON. This step ensures that this
MSFC and the active MSFC will not boot concurrently.
Step 5 Press Ctrl-C three times to return to the supervisor engine prompt.
Step 6 Ensure that high availability has synchronized the supervisor engine state by entering the show system
highavailability command and verifying that high availability “Operational-status” is ON.
Step 7 Enter the switch supervisor command.
Step 8 Enter the switch console command.
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