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A primary-standby VNF switching technology based on packet temporary storage

An active/standby, data packet technology, applied in the field of network function virtualization, to achieve the effect of user data preservation

Active Publication Date: 2021-02-02
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • A primary-standby VNF switching technology based on packet temporary storage
  • A primary-standby VNF switching technology based on packet temporary storage
  • A primary-standby VNF switching technology based on packet temporary 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 and packet temporary storage. The invention adds a storage module to the protected VNF instance, the storage module is connected to the predecessor of the original node and the protection node, and the storage module is responsible for the temporary storage of packets. When the original node fails, the storage module sends a copy of the corresponding data packet stored in its data packet cache queue to the protection node. When the cache queue is emptied, the system control layer will modify the network routing configuration so that subsequent user data is directed to the protection node , and then restore the operation of the network, and the network service can proceed normally. The invention realizes the recovery of the lost data packets when the VNF instance fails and ensures that the order is not disordered, so that the user data in the network can be preserved and the network service can be provided normally.

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 Patents(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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