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Item generating method and device for software-defined network and packet forwarding method

A software-defined network, table entry technology, applied in data exchange networks, electrical components, digital transmission systems, etc., to achieve the effect of improving link bandwidth utilization and traffic forwarding success rate

Active Publication Date: 2017-06-09
NEW H3C TECH CO LTD
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  • Description
  • Claims
  • Application Information

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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

Method used

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  • Item generating method and device for software-defined network and packet forwarding method
  • Item generating method and device for software-defined network and packet forwarding method
  • Item generating method and device for software-defined network and packet forwarding method

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Embodiment Construction

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

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

[0018] Step 101: Calculate multiple forwarding paths for the service flow according to the SDN network topology;

[0019] Step 102: Determine the maximum flow rate and flow rate identifier of each forwarding path;

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

[0021] Step 104: Generate an intermediate flow entry for each intermediate node according to the message characteristic information of the service flow,...

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Abstract

The invention provides forwarding item generating method and device for an SDN (Software-Defined Network) and a packet forwarding method. According to the invention, an SND controller generates entry and mid flow items according to packet feature information of service streams, different forwarding paths and the maximal flow rate of the service streams; generates exit flow items based on packet feature information of the service streams and forwarding exit ports. Entry nodes send packets carrying flow rate marks on selected paths according to entry flow items corresponding to the flow rate of the service streams and the packet feature information. Middle nodes on the paths continue to send the packets carrying the flow rate marks on the selected paths according to mid flow items matched with the packet feature information and the flow rate marks. Exit nodes sends packets with the flow rate marks removed according to the exit flow items matched with the packet feature information of the service streams. Therefore, flow items are generated according to flow rates of different forwarding paths of the service streams in the SDN and routing forwarding is performed at the flow rate of the service streams.

Description

Technical field [0001] This application relates to the technical field of traffic forwarding, and in particular to a method and device for generating entries in a software-defined network SDN (Software Defined Network, software-defined network) and a method for forwarding packets. Background technique [0002] The process of a message passing through the network from the source site to the destination site is essentially the process of message routing and forwarding. The forwarding nodes experienced in the middle can be routers and switches. There can theoretically be multiple forwarding paths between the source site and the destination site in a 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. Transmission message. [0003] Take the IP (internet protocol) network that performs Layer 3 forwarding as an example. There are different forwarding paths betwee...

Claims

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Application Information

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Patent Type & Authority Applications(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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