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Forwarding parameter passing method and equipment

A technology of forwarding parameters and forwarding equipment, applied in the field of communication networks, can solve problems such as time-consuming, labor-intensive, cumbersome, affecting SDN/OpenFlow, and delaying.

Active Publication Date: 2016-04-06
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] NDM / TTP solves the problem that OpenFlow is compatible with the traditional forwarding model to a certain extent, but when some parameters required in the existing traditional forwarding logic and forwarding tables are forwarding parameters that are not defined in the OpenFlow protocol specification, it is usually necessary to extend OpenFlow in the prior art However, a long-term standard promotion is required, and whenever it is found that a new forwarding parameter that is not defined in the OpenFlow specification needs to be added, one or more corresponding standard promotions are required to extend these forwarding parameters to OpenFlow In the protocol specification, it is very time-consuming, laborious and cumbersome, which delays and affects the speed of SDN / OpenFlow technology promotion and development to a certain extent.

Method used

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  • Forwarding parameter passing method and equipment

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0041] The solution of the embodiment of the present invention involves both sides of the controller and the forwarding device. The method for transmitting forwarding parameters in the embodiment of the present invention will be explained below starting from the controller.

[0042] see figure 1 , showing a schematic flowchart of a method for transferring forwarding parameters by a controller according to an embodiment of the present invention, which is applied to a network separated from control and forwarding, the network comprising the controller and a forwarding device, and the controller controls the forwarding equipment. The specific method may include the following steps:

[0043] Step 101, the controller obtains an extended forwarding model description, the extended forwarding model description includes a first format encoding rule, and the first format encoding rule is used to indicate the type of the first forwarding parameter and the first The position of the forw...

Embodiment 2

[0073] Corresponding to the forwarding parameter transfer method of the above controller, the embodiment of the present invention also provides a forwarding parameter transfer method of a forwarding device, which is applied to a network with separated control and forwarding, and the network with separated control and forwarding includes the control and the forwarding device, and the forwarding device receives the control of the controller. The specific method can be found in image 3 The schematic flow chart shown may include the following steps:

[0074] Step 301. The forwarding device obtains an extended forwarding model description, the extended forwarding model description includes a first format encoding rule, and the first format encoding rule is used to indicate the type of the first forwarding parameter and the first The position of the forwarding parameter in the first field, where the first field is a field in an OpenFlow protocol flow entry.

[0075] Step 302, the...

Embodiment 3

[0092] Please refer to Figure 4 , an embodiment of the present invention provides a controller 400, the controller 400 controls the forwarding device, and is applied in a network separated from control and forwarding, including:

[0093] The obtaining unit 401 is configured to obtain an extended forwarding model description, the extended forwarding model description includes a first format encoding rule, and the first format encoding rule is used to indicate the type of the first forwarding parameter and the first forwarding parameter The position of the parameter in the first field, where the first field is a field in an OpenFlow protocol flow entry.

[0094] A sending unit 402, configured to fill the first forwarding parameter into the first field according to the first format encoding rule, and send the flow entry carrying the first field to the on the forwarding device, so that the forwarding device parses the first field in the flow entry according to the first format e...

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PUM

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Abstract

The embodiment of the invention discloses a forwarding parameter passing method, device and system. The forwarding parameter passing method comprises the steps that a controller acquires an extended forwarding model description, the extended forwarding model description includes first format coding rules which are used for indicating the type of first forwarding parameters and the position of the first forwarding parameters in first fields, and the first fields are fields in OpenFlow protocol flow table items; and the controller fills the first fields with the first forwarding parameters according to the first format coding rules and transmits the flow table items carrying the first fields to forwarding equipment through an OpenFlow protocol so that the forwarding equipment is enabled to analyze the first fields in the flow table items according to the first format coding rules to obtain the first forwarding parameters. The invention provides the simple and high-efficiency forwarding parameter passing method.

Description

technical field [0001] The present application relates to the field of communication networks, and in particular to a method, device and system for transferring forwarding parameters. Background technique [0002] The SDN (Software Defined Networking) architecture based on the idea of ​​separation of control and forwarding is a new network switching model that has played a good role in promoting the innovation and development of the network. Its key components include OpenFlow switches and controllers. The controller and the OpenFlow switch complete message interaction and information transmission through the control channel specified by the OpenFlow protocol. The controller realizes the management and control function through the whole network view, and generates a forwarding flow table for the OpenFlow switch; the OpenFlow switch forwards the data packet according to the flow table, and the flow table item is mainly composed of matching fields (matchfields) and operations ...

Claims

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Application Information

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IPC IPC(8): H04L12/701H04L29/06H04L45/74
CPCH04L45/64H04L41/0823H04L41/0886H04L45/38H04L45/74H04L67/63H04L41/342H04L69/22
Inventor 于光学陈诚马朋
Owner HUAWEI TECH CO LTD