A flow migration method and system based on network function virtualization scenarios

A network function virtualization and flow migration technology, which is applied in the field of flow migration methods and systems based on network function virtualization scenarios, can solve the problem of not responding in target network functions, inconsistent flow state functions, and inability to ensure that data packets reach the target. network and other problems, to achieve the effect of no packet loss and no out-of-order flow migration operation
CN105978952BActive Publication Date: 2019-04-30INST OF COMPUTING TECH CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
INST OF COMPUTING TECH CHINESE ACAD OF SCI
Publication Date
2019-04-30

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Abstract

The present invention proposes a flow migration method based on a network function virtualization scenario. The method includes deploying a source flow migration processing unit and a target flow processing unit at the source network function and the target network function respectively, and through the source flow migration processing unit Two labels are set in the header of the data packet with the network switching equipment, and the data packet is marked as four types, including normal class, in-fly class, last in-fly class, redirect class, and the described target flow migration processing unit uses based on The classifier of the label classifies the normal class, in-fly class, last in-fly class, and redirect class data packets; deploys a state machine in the flow migration processing unit to record the current migration state, and the source state machine is based on The migration state marks and forwards the data packets, and the target state machine places the four types of data packets respectively in the default cache, in-fly ring cache and redirect ring cache in the target flow processing unit according to the migration state and packet processing rules , and finally delivered to the target network function through the default cache.
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Description

technical field

[0001] The present invention relates to the field of network function virtualization and the field of software-defined network technology, and in particular to a flow migration method and system based on network function virtualization scenarios. Background technique

[0002] With the evolution of the network architecture and the continuous development of services, more and more dedicated devices are deployed in the network, such as security devices such as firewalls, intrusion detection, and access authentication, and performance-enhancing devices such as load balancing and TCP acceleration. Same level as routing and switching equipment. The massive deployment of these dedicated devices not only increases the cost of purchase and operation, but also increases the difficulty of management, operation and maintenance. Moreover, the development cycle is long, which cannot meet the requirements of rapid innovation and dynamic deployment of networks and applicatio...

Claims

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