Method and equipment for using route switching equipment

Abstract

The invention discloses a method and equipment for using route switching equipment, and the method comprises the steps: responding to the switching of the route switching equipment from a conventional mode to an open flow mode, and carrying out the following steps: converting items of a forwarding table of the conventional mode into flow table items of the open flow mode; storing the converted flow table items to be stored in the flow table of the route switching equipment; responding to a received data message, and carrying out the processing of the data message according to the converted flow table items stored in the flow table. The method and equipment can enable the route switching equipment to be switched to the open flow mode from the conventional mode, and save the CPU resources of the route switching equipment.

Description

technical field [0001] The present invention relates to network technology, more specifically, to a method and device for routing and switching equipment. Background technique [0002] A routing and switching device supporting the OpenFlow protocol can work in an OpenFlow mode or a traditional mode according to its configuration and its connection status with the controller. The traditional mode includes a standalone mode (standalone mode) and a non-independent mode (failstandalone mode). In the non-independent mode, the routing and switching device supporting the OpenFlow protocol has been activated in the OpenFlow mode, but has lost connection with the controller. According to the OpenFlow protocol, a commonly used method to deal with disconnection is: all flows The entry will be deleted, and the traditional forwarding function of the routing and switching device will be enabled, and forwarding will be performed according to the traditional forwarding table. Table 1 show...

AI Technical Summary

Problems solved by technology

In the existing technical solution, once the routing and switching device re-establishes a connection with the controller, the routing and switching device will return to the open flow mode from the non-independent mode. At this time, the original flow entry has been deleted, and the routing and switching device needs to Waiting for the protocol convergence on the controller to add flow entries. The protocol convergence speed is generally slow. Before that, only the above-mentioned default processing rules exist, and the action of the default processing rules is to send all packets that do not match the flow entries to the controller, and a message sent to the controller will be soft-forwarded by the CPU of the switch. This channel itself is very narrow. There are only megabits per second (Mbps), and more packets on the order of megabits per second will be discarded. As a result, if there are protocol control packets mixed in the data stream, they are easily discarded, affecting the protocol convergence on the controller. speed

Moreover, the processing of packets through soft forwarding by the CPU will occupy a large amount of CPU resources, causing the CPU to run very slowly.

However, a large number of data packets are sent to the controller, which also needs to be calculated, which wastes the resources of the controller and is useless for protocol calculation (the controller performs protocol convergence according to the protocol control message)

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