Cisco catalyst 6500 series Configuration Note page 90

Configuring a Hitless Upgrade
The standby CSM boots as standby with the new release. If you have sticky backup enabled, keep the
standby CSM in standby mode for at least 5 minutes.
Upgrade the active CSM.
Step 4
Step 5 Reboot the active CSM.
When the active CSM reboots, the standby CSM becomes the new active CSM and takes over the service
responsibility.
Step 6 The rebooted CSM comes up as standby.
Catalyst 6500 Series Content Switching Module Configuration Note
7-10
Chapter 7 Configuring Redundant Connections
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