Method and equipment for transmitting protocol messages

Abstract

The invention discloses a method and equipment for transmitting protocol messages. The method comprises the steps of building a port set by an SDN controller for network equipment, and recording an exchanger interface of the network equipment in the corresponding port set of the network equipment; learning host information carried in the protocol messages and host interfaces of the protocol messages received by the network equipment when the protocol messages from the network equipment are received; adding the host interfaces in the corresponding port set of the network equipment, and sending a second indicating message to the network equipment, wherein the second indicating message is used for indicating that the host interfaces are added in the port set of the network equipment; issuing a flow table to the network equipment, wherein the flow table comprises the host information and used for indicating the network equipment to send the protocol messages by utilizing an exchanger interface and/or a host interface recorded in the port set. According to the method and equipment, the number of protocol messages sent to the SDN controller can be reduced, and the processing performance of the SDN controller can be improved.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a method and equipment for transmitting protocol messages. Background technique [0002] SDN (Software Defined Network, Software Defined Network) is a new network innovation architecture. Its core idea is to separate the control plane from the forwarding plane to achieve flexible control of network traffic and provide a good solution for core network and application innovation. platform. like figure 1 As shown, it is a schematic diagram of SDN networking. The SDN controller, SW1, SW2, and SW3 form an SDN network (also called OpenFlow network) built by the OpenFlow protocol. SW1, SW2, and SW3 are switches within the SDN network. RT1 , RT2, and RT3 are routers outside the SDN network, and the packets exchanged between RT1, RT2, and RT3 need to be transparently transmitted through the SDN network. In subsequent related descriptions, a switch within an SDN network may be ref...

AI Technical Summary

Problems solved by technology

Furthermore, since the network device does not distinguish between data packets and protocol packets when sending packets to the SDN controller, and the number of packets that the network device can send to the SDN controller is limited, when the network device needs When a large number of packets are sent, some multicast protocol packets cannot be sent to the SDN controller, and then the multicast protocol packets cannot be sent to the host in time, resulting in packet loss of the multicast protocol packets

For example, for the hello packets (multicast protocol packets) of the OSPF (Open Shortest Path First) protocol exchanged between hosts, when the hello packets are lost in the SDN network, it will cause Unable to establish neighbors normally

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