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Table entry generation method and device for software-defined network and message forwarding method

A message and table entry technology, applied in the direction of data exchange network, electrical components, digital transmission system, etc., to achieve the effect of improving link bandwidth utilization and traffic forwarding success rate

Active Publication Date: 2019-11-29
NEW H3C TECH CO LTD
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  • Claims
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Problems solved by technology

There can theoretically be multiple forwarding paths between the source site and the destination site in the non-directly connected network topology, but only one of these multiple forwarding paths can be selected as the forwarding path between the source site and the destination site for transmission message

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  • Table entry generation method and device for software-defined network and message forwarding method
  • Table entry generation method and device for software-defined network and message forwarding method
  • Table entry generation method and device for software-defined network and message forwarding method

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Embodiment Construction

[0016] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0017] The flow of the SDN controller provided by the embodiment of the present invention to generate forwarding entries is as follows: figure 1 Shown:

[0018] Step 101, calculating multiple forwarding paths for service flows according to the SDN network topology;

[0019] Step 102, determining the maximum traffic rate and traffic rate identifier of each forwarding path;

[0020] Step 103, according to the packet feature information of the service flow, the traffic rate identifier of each forwarding path, and the egress port of the ingress node on each forwarding path, generate an ingress flow entry;

[0021] Step 104, according to the message feature information of the service flow, the traffic rate identifier of each forwarding path and the o...

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Abstract

The present application provides a method and device for generating a forwarding table entry of a software-defined network (SDN), and a message forwarding method. Among them, the SDN controller generates ingress and intermediate flow entries based on the packet characteristic information of the service flow, each forwarding path and its maximum flow rate; generates an egress flow entry based on the packet characteristic information of the service flow and the forwarding port. The ingress node sends the packet carrying the traffic rate identifier on the selected path according to the ingress flow entry matched with the flow rate of the service flow and the packet characteristic information. The intermediate node on the selected path continues to send the message carrying the flow rate identifier on the selected path according to the message feature information of the message and the intermediate flow entry matched by the flow rate identifier. The egress node sends the packet with the traffic rate identifier removed according to the egress flow entry matched by the packet feature information of the service flow. Therefore, in the SDN network, according to the traffic rate of each forwarding path of the service flow, a flow entry is generated to select and forward the flow rate of the service flow.

Description

technical field [0001] The present application relates to the technical field of traffic forwarding, and in particular to a method and device for generating an entry in a software-defined network (SDN, Software Defined Network) and a method for forwarding packets. Background technique [0002] The process of packets traveling from the source site to the destination site through the network is essentially the process of packet pathfinding and forwarding. The forwarding nodes in the middle can be routers or switches. There can theoretically be multiple forwarding paths between the source site and the destination site in the non-directly connected network topology, but only one of these multiple forwarding paths can be selected as the forwarding path between the source site and the destination site for transmit message. [0003] Take the IP (internet protocol) network that implements three-layer forwarding as an example. There are different forwarding paths between two routers...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/701H04L45/125H04L45/42H04L45/74
CPCH04L45/38H04L45/645H04L45/745H04L45/80H04L45/125H04L45/42H04L45/54
Inventor 李晶林
Owner NEW H3C TECH CO LTD
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