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Catalyst 6500 Series Switch Software Configuration Guide—Release 8.7
OL-8978-04
Chapter 23 Configuring Redundancy
MSFC Redundancy
Note This procedure assumes that the designated router is the MSFC2 in slot 1 and the nondesignated router
is the MSFC2 in slot 2; the active supervisor engine is in slot 1 and the standby supervisor engine is in
slot 2.
Step 1 Enter the show version command to ensure that both supervisor engines are running supervisor engine
software release 6.3(1) or later releases.
Step 2 Enter the set system highavailability enable command to enable high availability on the active
supervisor engine. Enter the show system highavailability command to verify that high availability is
enabled.
Step 3 If you have a console connection, enter the switch console command to access the designated router. If
connected through a Telnet session, enter the session mod command to access the designated router.
Step 4 Copy the Cisco IOS Release 12.1(8a)E2 or later image to the bootflash of the designated router and
nondesignated router.
Step 5 Set the boot image and configuration register on the designated router and nondesignated router to boot
the new image on a reload.
For the designated router, enter the boot system flash bootflash:image_name command and ensure that
this image is the first image in the boot list. Clear any existing boot system commands that appear in the
running configuration (show running-config) using the no form of the boot system command.
For the nondesignated router, set the configuration register to auto boot by entering the
config-register 0x102 command.
Note If you already have SRM-capable Cisco IOS images loaded, you do not need to perform
Step 6.
Step 6 Enter the reload command to reload the designated router and nondesignated router.
Step 7 Disable the configuration synchronization (config-sync) on the designated router by entering the no
form of the command. Enter the write memory command. This step lets you access the configuration
mode on both the designated and nondesignated routers.
Step 8 Enable SRM on the designated router first, and then enable SRM on the nondesignated router as follows:
Router(config)# redundancy
Router(config-r)# high-availability
Router(config-r-ha)# single-router-mode
Note With Cisco IOS Release 12.1(11b)E and later releases, you can specify the transition time that the
newly designated router waits before downloading the new Layer 3 switching information to the
supervisor engine switch processor. For configuration details, see the “Specifying the Transition
Time on the Newly Designated Active Router” section on page 23-47.
Step 9 Enter the write memory command on the designated router to ensure that the nondesignated router’s
startup configuration has SRM enabled.
Step 10 Enter the show startup-config command on the nondesignated router to ensure that the nondesignated
router has the following configuration statements:
redundancy
high-availability
single-router-mode
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