The switch as position 1 is added to the network and configured with the credentials and address for the controller. It contacts the controller, which queries the switch for its capabilities and configuration. Then the controller pushes any configuration it has to the switch. The controller updates its view of the network and forwarding policies and updates the existing switches forwarding tables if necessary, making the new switch available to carry traffic.
Mike Fratto is a principal analyst at Current Analysis, covering the Enterprise Networking and Data Center Technology markets. Prior to that, Mike was with UBM Tech for 15 years, and served as editor of Network Computing. He was also lead analyst for InformationWeek Analytics ... View Full Bio