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Message forwarding method and device

A technology of message forwarding and message encapsulation, applied in the field of network communication, can solve problems such as low efficiency, waste of resources, and large ACL consumption

Active Publication Date: 2014-12-24
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the existing technology, the flow table is realized through the access control list (ACL), and the controller needs to issue the flow table for each switch, which means that a large amount of ACL is consumed, so the implementation is wasteful of resources and relatively efficient Low

Method used

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Embodiment Construction

[0013] In order to make the object, technical solution and advantages of the present invention clearer, the solutions of the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0014] In the embodiment of the present invention, switching devices at different positions in the data message transmission direction are divided into three different types of devices, which are respectively ingress switching devices, intermediate switching devices and egress switching devices. Wherein, there may be multiple intermediate switching devices, and the processing methods of the three types of different devices in the present invention are not the same. The central idea of ​​the present invention is: the control device assigns a unified global label to the switching device according to the forwarding equivalence class (FEC), carries the global label in the Openflow flow table and sends it to the ingress switching device, and ...

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Abstract

The invention discloses a message forwarding method. The message forwarding method is applied to an Openflow network with a control device Openflow Controller and exchange devices. The method comprises the steps that the control device assigns uniform global tags according to the forwarding equivalence class (FEC) and issues the global tags to the exchange devices, and thus the exchange devices carry out FEC matching on messages without global tags, packages the global tags on the messages and then forwards the messages out; the messages with global tags are forwarded out through global tag forwarding table items. The invention further discloses the control device and the exchange devices. By the adoption of the message forwarding method, the control device and the exchange devices, the range of specifications supported by the exchange devices can be broadened.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a message forwarding method and device. Background technique [0002] The Openflow switch separates the packet forwarding and forwarding strategy on the traditional switch, and uses a dedicated controller (controller) to connect to the switch through a network cable. In this way, the packet forwarding function (implemented by the hardware chip) and the packet forwarding strategy (various software protocols) originally on the same switch device are separated to different hardware devices. And one controller can also control multiple Openflow switches, thus realizing a unified forwarding control terminal and controlling the network more effectively. The basic Openflow network includes: the network controller of the control plane and the Openflow switch of the forwarding plane. The method of forwarding data packets in the Openflow network is to use the flow table to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/947H04L45/50
CPCH04L47/2408H04L45/50H04L49/25
Inventor 郜忠华
Owner NEW H3C TECH CO LTD
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