Description: Indicates whether the dcef mode is enabled on the standby supervisor or not. 'true' - Setting cc6kxbarDcefOnlyModeAllowed to 'true' makes the cc6kxbarModuleModeSwitchingMode of all the active modules to 'dcefmode'. With the active fabric module present in the system, with the switch being in stateful switchover mode, with all the cards that has no distributed Cisco Express forwarding switching support being powered down and on some platforms with standby supervisor ports being shutdown, changing cc6kxbarDcefOnlyModeAllowed to 'true' will make the standby supervisor module reloaded and booted up as distributed forwarding module. 'false'- Setting cc6kxbarDcefOnlyModeAllowed to 'false' makes the cc6kxbarModuleModeSwitchingMode of the standby supervisor module to the default value. Changing cc6kxbarDcefOnlyModeAllowed to 'false' will make the standby supervisor reloaded and booted up with the default cc6kxbarModuleModeSwitchingMode.