Prerequisites for Configuring the Configuration Engine
Obtain the name of the configuration engine instance to which you are connecting.
Because the CNS uses both the event bus and the configuration server to provide configurations to devices, you must define both ConfigID and Device ID for each configured switch.
All switches configured with the cns config partial global configuration command must access the event bus. The DeviceID, as originated on the switch, must match the DeviceID of the corresponding switch definition in the Cisco Configuration Engine. You must know the hostname of the event bus to which you are connecting.