Controller driven OAM for openflow

摘要

A method is performed by a network element implementing an OpenFlow controller. The method requests that a subset of OpenFlow switches in the network report metrics for an OpenFlow data flow to provide a management module with information for executing a management function. A second method is performed by a network element implementing an OpenFlow switch. The OpenFlow switch reports metrics for an OpenFlow data flow to the OpenFlow controller, wherein the OpenFlow switch forwards a management packet with the OpenFlow data flow and collects the metrics for the OpenFlow data flow.

主权项

1. A method performed by a network element implementing an OpenFlow controller, the method to request that a subset of OpenFlow switches in the network report metrics for an OpenFlow data flow to provide a management module with information for executing a management function, the method comprising the steps of:
receiving by the management module of the network element a request to execute the management function; generating a trigger monitoring message by the management module, the trigger monitoring message defining actions to be performed by an OpenFlow switch in the subset of OpenFlow switches, wherein the actions are to provide the metrics for the OpenFlow data flow; sending the trigger monitoring message to the OpenFlow switch; receiving a plurality of monitor response messages from the subset of OpenFlow switches, each of the plurality of monitor response messages including a metric entry for each flow table or group table in which a match for the OpenFlow data flow occurred in a given OpenFlow switch, where each metric entry includes any one of a flow table identifier, a group identifier, a match structure, or a cookie of a flow entry; correlating the plurality of monitor response messages with the management function request; executing the requested management function using the metrics of the OpenFlow data flow by the management module; and returning a result of the requested management function.