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Active/standby VNF switching technology based on temporary packet storage

A technology, master-backup technology, applied in the field of avoiding data packet loss, to achieve the effect of user data preservation

Active Publication Date: 2018-11-06
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above problems, in order to solve the problem of recovering the lost data packets and ensuring that they are not out of order when the VNF instance fails, the present invention provides a primary-standby VNF switching technology based on packet temporary storage

Method used

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  • Active/standby VNF switching technology based on temporary packet storage
  • Active/standby VNF switching technology based on temporary packet storage
  • Active/standby VNF switching technology based on temporary packet storage

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Embodiment Construction

[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings and the above solutions.

[0025] Figure 5 The given example network topology shows that there are multiple SDN switches supporting the Openflow protocol, each SDN switch is mounted with an x86 server, and the VNF instance responsible for providing network services is hosted on the x86 server in the virtual machine. The control plane is not shown in the figure. It mainly includes two parts: the SDN network controller and the VNF manager. The former is responsible for controlling the SDN switch and issuing flow tables, and the latter is responsible for managing, orchestrating and monitoring the VNF instances.

[0026] The user data in this embodiment is encapsulated in the form of VXLAN-gpe+NSH, and the format is as follows Figure 4 shown. image 3 The detailed structure of NSH is given, in which the two fields of SPI (Servive Path Identifier) ​​and SI (Serv...

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Abstract

The invention belongs to the field of network function virtualization NFV, and specifically relates to an active / standby VNF switching technology based on temporary packet storage. According to the active / standby VNF switching technology based on temporary packet storage provided by the invention, a protected VNF instance is additionally provided with a storage module, the storage module is connected to a predecessor and a protection node of an original node, and the storage module is responsible for the temporary packet storage. When the original node fails, the storage module sends a corresponding data packet copy stored in a data packet cache queue to the protection node, after the cache queue is emptied, a system control layer modifies the network routing configuration, so that subsequent user data are directed to the protection node, and then the operation of the network is restored, and the network service can be carried out normally. By adoption of the active / standby VNF switching technology based on temporary packet storage provided by the invention, when the VNF instance fails, the lost data packet is recovered and guaranteed not to be out of order, so that the user data in the network can be preserved, and the network service can be normally provided.

Description

technical field [0001] The invention belongs to the field of network function virtualization (NFV), and specifically relates to a primary-standby VNF switching technology based on packet temporary storage, and relates to a technology for avoiding data packet loss during primary-standby virtual network function (VNF) switching. Background technique [0002] Network function virtualization technology enables virtual network function instances to be deployed on general-purpose computing platforms. However, since general-purpose computing platforms do not have carrier-class reliability, the reliability of these virtual network function instances is relatively low, which cannot reach the level of traditional network hardware equipment. reliability provided. [0003] Therefore, in the NFV environment, multiple VNF instances with the same function are generally formed into active and standby modes to improve the reliability of network services. When the primary instance fails, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L29/08H04L12/861G06F9/455
CPCH04L41/0668H04L41/0813H04L49/90G06F9/45504H04L67/568
Inventor 林蓉平叶力文罗钐
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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