Forwarding path selection method and device

A forwarding path and purpose technology, applied in the field of communication, can solve problems such as low data transmission efficiency and long data transmission time, and achieve the effects of improving link forwarding efficiency, reducing data transmission time, and improving data transmission efficiency

Active Publication Date: 2016-05-18
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Obviously, when the transmission delay of the physical link used as the forwarding path is very large, when data transmission is performed between the source network device and the destination network device, the data transmission efficiency is low and the data transmission time is long

Method used

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  • Forwarding path selection method and device
  • Forwarding path selection method and device
  • Forwarding path selection method and device

Examples

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Embodiment Construction

[0036] Aiming at the problems existing in the prior art, an embodiment of the present invention proposes a method for selecting a forwarding path, which can be applied to an SDN including a controller, a source network device, and a destination network device. Wherein, the source network device and the destination network device have a connection relationship, and the connection relationship may be connected through a direct link and / or connected through a non-direct link. The source network device and the destination network device are relative. For multiple network devices in SDN, if the controller sends an Openflow message to a network device (such as network device 1), another network device that has a connection relationship with the network device 1 (such as network device 2) returns an Openflow message to the controller, then network device 1 is a source network device, and network device 2 is a destination network device; correspondingly, if the controller sends an Open...

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Abstract

The invention provides a forwarding path selection method and a forwarding path selection device. The forwarding path selection method comprises the steps that: a controller sends a first message packaged with a first detection message to source network equipment, wherein a message type of the first detection message is a delay detection type; the controller receives a second message packaged with a second detection message from target network equipment, wherein the second detection message comprise a first sending time stamp of the first detection message determined by the source network equipment, and a first receiving time stamp of the first detection message determined by the target network equipment; and the controller utilizes the first sending time stamp and the first receiving time stamp, determines transmission delay time of a physical link between a source port and a target port, and selects a forwarding path between the source network equipment and the target network equipment by utilizing the transmission delay time. By adopting the forwarding path selection method and the forwarding path selection device, data transmission time can be shortened, and data transmission efficiency can be increased.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and device for selecting a forwarding path. Background technique [0002] SDN (Software Defined Network, Software Defined Network) is a new network innovation architecture. Its core idea is to separate the control plane of network equipment from the forwarding plane, so as to realize the flexible control of network traffic and provide a good solution for core network and application innovation. platform. [0003] In order to obtain the network topology of the SDN, the controller sends an Openflow message encapsulated with a detection packet to the source network device (such as an Openflow switch), and the detection packet includes the identifier of the source network device and the identifier of the source port. The source network device parses the detection packet from the Openflow message, and sends the detection packet through the source port. After ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/727H04L45/121
Inventor 宋小恒
Owner NEW H3C TECH CO LTD
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