Dell EMC SmartFabric OS10 User Guide Release 10.5.1

OpenFlow controller

OS10 is qualified with the following SDN controllers:

• RYU
• Open Network Operating System (ONOS)

To establish a connection with the controller, configure the IPv4 address of the controller and port ID in the OpenFlow logical switch instance. The default port is 6653. You can connect controllers to the switch in OOB Connection mode. However, you can use any of the front-panel ports as the management interface using the in-band command. The inband port is removed from the OpenFlow switch instance and is not controlled by the controller.

The management port MTU is 1532 and the inband port MTU is 9216.

OpenFlow uses the Transmission Control Protocol (TCP) and Transport Layer Security (TLS) protocol for communication.

If the OpenFlow switch loses connection with the controller, the switch immediately enters Fail Secure mode. All the flows the controller installs are retained on the switch. The flow entries are removed based on the hard or idle timeout that you configure.