Cisco Catalyst 4500/6500 series can host up to 2 Supervisor Engine in his chassis.
Below a quick list of commands to set up redundancy between Supervisors Engines:
# Cisco
# Confs:
Cat4500e-LAB(config)#redundancy
Cat4500e-LAB(config-red)#mode sso
Cat4500e-LAB(config-red)#main-cpu
Cat4500e-LAB(config-r-mc)#auto-sync startup-config
# Troubleshooting:
Cat4500e-LAB#show redundancy switchover history
Cat4500e-LAB#show redundancy domain default
Cat4500e-LAB#show redundancy states domain default
# Service commands:
Cat4500e-LAB#redundancy config-sync validate mismatched-commands
Cat4500e-LAB#redundancy force-switchover
Cat4500e-LAB#redundancy reload peer
Cat4500e-LAB#redundancy reload shelf
In (config-r-mc)#
section you can choose what sync with the stand-by supervisor but remember vlan-database is always syncronized!
bye.
.glitchlist crew