SDN transfer method and device based on exp value in mpls message

Abstract

The present invention provides an SDN transfer method based on the EXP value in the MPLS message and its device. The SDN transfer method includes: all switches in the SDN network report their own MAC information and port information to the SDN controller; The switch receives the MPLS message and matches the MPLS message with the local flow table; if it matches, the switch performs normal forwarding and forwarding path queue scheduling for the MPLS message according to the local flow table; if it does not match, the switch reports the MPLS message to SDN controller: The SDN controller establishes a label switching path according to the label of the MPLS message, the EXP value, the traffic status of the entire network, the MAC information reported by the switch, and the port information, and forms a new flow table and sends it to the switch; The switch of the flow table forwards the MPLS message and schedules the forwarding path queue according to the new flow table. In this way, the convenience in the work process is greatly improved, and the error rate is reduced.

Description

technical field [0001] The invention relates to the field of SDN network technology, in particular to an SDN transfer method and device based on the EXP value in the MPLS message. Background technique [0002] MPLS (Multi-Protocol Label Switching, Multi-Protocol Label Switching) is a new generation IP high-speed backbone network switching standard, which was proposed by the Internet Engineering Task Force (IETF). MPLS uses labels for data forwarding. When a packet enters the network, it assigns a fixed-length label and encapsulates the label with the packet. During the entire forwarding process, the switching node only forwards according to the label. It is an interface to existing routing and switching protocols. MPLS is mainly used to solve network problems, such as network speed, scalability, QoS (Quality of Service, quality of service) management, and traffic engineering. [0003] The EXP value in the MPLS message is used to indicate the service level of the MPLS messa...

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Problems solved by technology

[0004] However, at present, the data flow policy based on the MPLS EXP value is distributed, and the configuration task needs to be set according to each switch during the forwarding process. In this way, in practical applications, if the network topology is too complicated, the configuration The task will be very complex and very error-prone

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