Openflow network and IP (Internet Protocol) network interconnection communication method and openflow subnet edge switch

Abstract

The invention provides an openflow network and IP (Internet Protocol) network interconnection communication method, which comprises the following steps that: on a switch which supports openflow, a routing process of an uplink port and an openflow protocol process of a downlink port are set; when a routing message enters the uplink port, the routing process acquires the routing information of the routing message, a controller is informed about the routing information by using the openflow protocol to convert the routing information into a flow table entry which is issued, and the routing information is issued to an openflow network in the form of the flow table entry according to a routing table entry; and when a flow table entry message enters the downlink port, the openflow protocol process acquires the flow table entry information of the flow table entry message, the flow table entry information is transmitted to the controller for resolution through the openflow protocol, the routing process is informed about a route by using the openflow protocol and the flow table entry information is issued to an IP network in a routing way according to forwarding rules. The invention additionally provides an openflow subnet edge switch for openflow network and IP network interconnection communication. The openflow network and IP network interconnection communication method and the openflow subnet edge switch provided by the invention have the advantages that the intercommunication between the openflow network and the IP network is realized and the respective operation of the openflow network and the IP network is not influenced.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to an Openflow network and an IP network interconnection communication method and an Openflow subnet edge switch used for the Openflow network and IP network interconnection communication. Background technique [0002] Openflow (abbreviated as OF) network is a new network exchange model aimed at redesigning the Internet and is a powerful promoter of network innovation ideas. However, it is impossible for the Openflow network to quickly replace the traditional network. Therefore, during the growth of OpenFlow, an Openflow island network will appear. like figure 1 As shown, the Openflow subnet and the IP subnet are connected by an IP backbone network. The existing Openflow network is still in the early stages of development, and there are still relatively few implementation solutions for traditional IP networks. The existing solution is to abstract the Openflow networ...

AI Technical Summary

Problems solved by technology

First of all, the existing technical solution is to add routing components to the control system of the Openflow network, and mix the traditional IP routing technology into the control system of the Openflow network, so that the Openflow network has the ability to process the routing technology of the network layer, thereby increasing The complexity of the control system implementation of the Openflow network, but it also violates the original design intention of the Openflow network to replace the traditional network

Secondly, the existing technical solutions require Openflow network edge switches and IP network edge switches to work together. This requirement increases the difficulty of implementation and deployment in actual application scenarios, which increases the possibility and difficulty of communication failures.

Third, in the existing technical solutions, only the Openflow network is used as the data forwarding layer, and there are few considerations for solving the two-way communication between the IP network host and the host in the Openflow network

Finally, the implementation of existing technical solutions is based on the addition of some traditional IP network function components to the Openflow control system. The Openflow protocol and other technologies in the Openflow technical standard are rarely used, which seriously restricts the intercommunication between Openflow networks. way and influenced the development of Openflow network

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