SDN controller and switch, flow table management method and message processing method

Abstract

The invention provides an SDN controller, a switch, a flow table management method and a message processing method. The flow table management method includes the following steps that: the network attributes of network ports of SDN switches which communicate with the SDN controller are configured, wherein the network attributes include service provider attributes and client attributes; and the network attributes of the network ports are judged through the SDN controller, and a first flow table is issued corresponding to service provider attribute ports, and a second flow table is issued corresponding to client attribute ports, wherein the first flow table at least comprises a matching field of which the matching condition is that a source port of a received message is a client attribute port and a corresponding action instruction which adds a service provider label for a message from the client attribute port, and the second flow table comprises at least a matching field of which the matching condition is that a source port of a received message is a service provider attribute port and a corresponding action instruction which removes the service provider label from the message from the service provider attribute port. With the SDN controller, the switch, the flow table management method and the message processing method of the invention adopted, QinQ configuration as well as management and maintenance are simplified, and software and hardware cost is reduced, and the innovation speed of services can be improved.

Description

technical field [0001] The invention relates to the field of network technology, in particular to an SDN controller and a switch, a flow table management method and a message processing method. Background technique [0002] QinQ is a layer-2 tunneling protocol based on 802.1q encapsulation. It encapsulates the user's private network VLAN (Virtual Local Area Network) tag in the public network VLAN tag. The user provides a Layer 2 VPN (Virtual Private Network) tunnel. [0003] QinQ provides a lower-cost and simpler Layer 2 VPN solution than MPLS (Multi-Protocol Label Switch). Using VLAN stacking and nesting technology, data packets carry two layers of different VLAN tags to identify different message services, changing the original limitation of only relying on one layer of VLAN tags to mark data packets, and achieving the purpose of extending VLAN IDs . The inner VLAN tag is called C-VLAN, which means user VLAN; the outer VLAN tag is called S-VLAN, which means service prov...

AI Technical Summary

Problems solved by technology

[0004] The control of QinQ function is distributed, so the configuration of QinQ behavior in the whole system is very complicated and cumbersome

Images