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Service chain data packet correlation method and correlation device

A data packet and service chain technology, applied in the field of communication, can solve the problems of increasing the difficulty of management and maintenance, and the deployment of value-added service equipment cannot meet the needs of customers, etc.

Active Publication Date: 2016-04-06
锐智信息科技(滨州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The value-added service equipment of the traditional data center network is generally deployed at the aggregation layer or the core layer. Its location and configuration are fixed, and it is impossible to provide dynamic value-added service superposition, migration and programming according to the different needs of customers for value-added services.
If value-added services need to be added, deleted and / or changed, value-added service equipment needs to be re-deployed, and the network topology needs to be changed, which increases the difficulty of management and maintenance
Especially in the era of cloud computing, the deployment of value-added service equipment obviously cannot meet the needs of customers

Method used

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  • Service chain data packet correlation method and correlation device
  • Service chain data packet correlation method and correlation device
  • Service chain data packet correlation method and correlation device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0097] refer to figure 1 Shown is a schematic diagram of the principle of the embodiment of the present invention. Software-defined network (English: SoftwareDefinedNetwork, abbreviation: SDN) controller 1 uses tunnel technology to connect value-added service equipment 2 and value-added service equipment 3 in series to form a service chain, and both ends of the service chain are connected to the same drainage point 4, wherein, Neither the value-added service device 2 nor the value-added service device 3 is a NAT device. figure 1 In , the solid line indicates the normal forwarding of the data packet without passing through the service chain, the dotted line indicates the forwarding of the data packet through the tunnel, and the diversion point 4 can be regarded as a switch or gateway device supporting the service chain function. The uplink data packet sent by user 5 first enters the diversion point 4 through the normal forwarding process, and is sent by the diversion point 4 t...

Embodiment 2

[0138] The embodiment of the present invention provides a method for associating data packets on the service chain that supports NAT equipment serial connection, refer to Figure 4 As shown, it is a schematic diagram of the principle of the embodiment of the present invention. The SDN controller 1 uses the tunnel technology to connect the value-added service device 2 and the value-added service device 3 in series to form a service chain, and the two ends of the service chain are connected to the same diversion point 4, wherein , the value-added service device 2 is a NAT device. Figure 4 In , the solid line indicates the normal forwarding of the data packet without passing through the service chain, the dotted line indicates the forwarding of the data packet through the tunnel, and the diversion point 4 can be regarded as a switch or gateway device supporting the service chain function. The uplink data packet sent by user 5 first enters the diversion point 4 through the normal...

Embodiment 3

[0167] An embodiment of the present invention provides a device for associating data packets on a service chain. Each value-added service device is connected in series through a tunnel to form a service chain. Both ends of the service chain are connected to the same drainage point. The device is located at the drainage point for Realize above-mentioned each method embodiment, the structure diagram of this device is as follows Figure 6 shown, including:

[0168] The first receiving unit 601 is configured to receive a first uplink data packet belonging to a first service flow sent by a first device; the first service flow is a service flow that needs to be processed by a service chain.

[0169] The storage unit 602 is configured to store the first service flow identifier carried in the first uplink data packet; the first service flow identifier is used to identify the first service flow.

[0170] The first adding unit 603 is configured to add an address chain of the service ch...

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Abstract

The invention discloses a service chain data packet correlation method and a correlation device, which realizes correlation between uplink and downlink data packets on the service chain. A drainage point receives a first uplink data packet which needs to be processed by the service chain, the service flow identifier is stored, the address chain of the service chain is added to the load, and a second uplink data packet is formed; according to the address chain, the second uplink data packet is sent to a first value-added service device in the uplink direction of the service chain; a third uplink data packet returned by the last value-added service device in the uplink direction of the service chain is received; the address chain in the load of the third uplink data packet is deleted, and a fourth uplink data packet is formed; the fourth uplink data packet is sent to a second device; a first downlink data packet sent by the second device is received; and when the first downlink data packet is determined to belong to a reverse service flow for the first service flow according to the first service flow identifier and the second service flow identifier in the first downlink data packet, the first downlink data packet is correlated to the first service flow.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and device for associating data packets on a service chain. Background technique [0002] The value-added service equipment of the traditional data center network is generally deployed at the aggregation layer or the core layer. Its location and configuration are fixed, and it is impossible to provide dynamic value-added service superposition, migration and programming according to the different needs of customers for value-added services. If value-added services need to be added, deleted and / or changed, value-added service devices need to be re-deployed, and network topology needs to be changed at the same time, which increases the difficulty of management and maintenance. Especially in the era of cloud computing, this deployment method of value-added service equipment obviously cannot meet the needs of customers. [0003] Compared with the traditional data cent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08H04L29/12
Inventor 吴涛尹成河钟国城康培建
Owner 锐智信息科技(滨州)有限公司