[OPNFLWPLUG-844] Openflow connetion is released when slave role request with OFPRRFC_UNSUP error returned

Mon, 27 Sep 2021 09:01:59 +0000

When a switch is trying to establish openflow connetcion to a single ODL controller , controller sends slave role request before sending a master role request.

According to the "OpenFlow1.3.4TestSpecification-Basic.pdf"(https://www.opennetworking.org/images/stories/downloads/working-groups/OpenFlow1.3.4TestSpecification-Basic.pdf),clause "440.450 - Role request failed unsupported" defines that an error reply should be returned by the switch with the error code OFPRRFC_UNSUP in this case.

When controller recevices the error with OFPRRFC_UNSUP, it sends slave role request again, and it receives the same error again . The controller retries 42 times and close the connetion.

Thus if the switch obey the rule defined by the test sepecification, it can not connect to an ODL controller.

OpenDaylight JIRA

[OPNFLWPLUG-844] Openflow connetion is released when slave role request with OFPRRFC_UNSUP error returned