Cisco EnergyWise and Catalyst 6500 Switches
For Catalyst 6500 switches running EnergyWise Phase 2 and later:
•For high availability
–To perform an ISSU downgrade from a Cisco IOS release supporting EnergyWise Phase 2 to an earlier software release that does not support EnergyWise, disable EnergyWise on the switch first.
–To perform an ISSU downgrade from a Cisco IOS release supporting EnergyWise Phase 2 to an earlier release that does not support EnergyWise, remove the snmp-server enable traps energywise global configuration command from the switch configuration.
•For stateful switchover (SSO) mode
–On a redundant chassis operating in SSO mode, the energywise neighbor hostname udp-port-number global configuration command does not work. Use the energywise neighbor ip-address udp-port-number global configuration command to specify the IP address of the host.
For more information, see the "CLI Compatibility Issues" section in the "Managing Single Entities" chapter.