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Communication system, control device, communication node, and communication method

A technology of a communication node and a control device, which is applied in the field of communication systems and can solve problems such as increased load of flow entry setting

Active Publication Date: 2013-10-09
NEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, when the techniques described in Non-Patent Documents 1 and 2 are applied to a large-scale network, there is a concern that the flow entry setting load will increase.

Method used

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  • Communication system, control device, communication node, and communication method
  • Communication system, control device, communication node, and communication method
  • Communication system, control device, communication node, and communication method

Examples

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Embodiment approach ）

[0099] A communication system according to an embodiment will be described with reference to the drawings. figure 2 It is a figure which shows the structure of the communication system of this embodiment, and the virtual network provided by this embodiment.

[0100] refer to figure 2 , N1 to N19 represent communication nodes, and C1 to C7 represent control devices for controlling the communication nodes. Each control device sets a processing rule specifying a processing method of a packet belonging to a certain flow to a communication node controlled by itself. Each communication node holds the processing rules set by the control device in a table. Each communication node searches the table for a processing rule corresponding to the received packet, and executes processing of the received packet (forwarding of the packet, etc.) according to the corresponding processing rule. When there is no processing rule corresponding to the received packet in the table, the communicat...

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Abstract

A communication system includes: a plurality of communication nodes; and a control apparatus that controls packet processing of the plurality of communication nodes. The control apparatus further includes: a virtualization unit that configures a virtual node(s) from a plurality of communication nodes among the plurality of communication nodes; a control unit that sets a processing rule for a packet in at least one communication node of the plurality of communication nodes included in the virtual node(s), so that the at least one communication node executes packet processing corresponding to an operation of the virtual node(s); and a path calculation unit that calculates a forwarding path of a packet, based on a virtual network topology including the virtual node(s). The plurality of communication nodes process a packet corresponding to the forwarding path, in accordance with the processing rule.

Description

technical field [0001] [Records about related applications] [0002] This invention is an application based on the priority claim of Japanese Patent Application No. 2011-024045 (filed on February 7, 2011), and all the descriptions of the same application are incorporated in this application by reference. [0003] The present invention relates to a communication system, a control device, a communication node, and a communication method, and more particularly, to a communication system that virtualizes nodes on a network to forward packets, a control device that controls communication in the communication system, a communication node, and a communication method. Background technique [0004] Non-Patent Documents 1 and 2 describe OpenFlow technology. OpenFlow captures communication as an end-to-end flow (Flow), and performs path control, failure recovery, load distribution, and optimization in flow units. The OpenFlow switch functioning as a forwarding node includes a secure ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/721H04L12/751H04L12/803H04L45/42H04L45/02
CPCH04L47/10H04L45/02H04L49/70H04L45/38H04L41/122H04L41/12
Inventor 芦田优太小出俊夫
Owner NEC CORP
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