Support protocol-independent software-defined network virtualization management platform

Abstract

The invention discloses a support protocol irrelative software defined networking virtualization management platform. According to the platform, the fact that different tenants can establish and manage a plurality of virtual networks on the same physical resource is supported. Each virtual network can customize a topology flexibly. Each virtual network can use a customized protocol according to a demand, so the programmable capability of SDN (Software Defined Networking) is exerted fully. Traffic is isolated between the virtual networks in a mode of adding labels. Through introduction of branch flow tables and a virtual network flow table, the flow tables are planned, so a data packet processing rate is greatly improved.

Description

technical field [0001] The invention relates to the technical field of software-defined network virtualization management, in particular to a protocol-independent software-defined network virtualization management platform. Background technique [0002] Network virtualization (network virtualization) refers to creating multiple virtual networks on a shared physical network resource, and can independently deploy and manage multiple virtual networks at the same time. Among them, each virtual network can customize the virtual network topology and run custom protocols. By using network virtualization, the utilization of the underlying physical resources can be improved. In addition, the introduction of network virtualization makes it possible to make the network structure dynamic and diversified, which is considered to be the best solution to solve the problem of existing network rigidity and build the next generation Internet. [0003] Since network virtualization has many ad...

AI Technical Summary

Problems solved by technology

[0009] 1) Cannot handle the situation where the flow space overlaps

Flowvisor divides the virtual network according to the flow space generated by the user policy. In fact, it divides a complete protocol header field space to different users. Since the flow space of each virtual network is defined by the user, there is a potential possibility to make The flow spaces of different virtual networks overlap, which Flowvisor cannot properly handle

[0010] 2) Flowvisor has no concept of virtual devices

Since the same physical device may be shared by multiple virtual networks, when one of the virtual networks modifies the relevant properties of the device, it may affect other virtual networks

[0011] 3) Does not support virtual topology

[0012] 4) Does not support address virtualization

Therefore, when the number of hosts connected to the virtual network increases, in order to enable communication between any hosts, the number of flow entries in the switch will increase significantly

[0017] 3) Low matching efficiency

OVX is implemented based on OpenFlow1.0 and adopts a single-table structure. All the flow entries of the virtual network are concentrated in one table. In addition, there is an explosion problem in the flow entries of each virtual network. Therefore, the matching efficiency is low.

[0018] On the other hand, although OpenFlow implements the idea of ​​SDN programmable network, it has the following problems: 1) With the expansion of software-defined network application scenarios and the development of network technology itself, OpenFlow needs to support more and more protocols and The passive evolution of the data processing method causes the matching fields to become more and more bloated

2) It only supports existing protocols, and it is difficult to support new protocols. If services based on new protocols are to be implemented, equipment manufacturers need to modify the equipment to support new protocols, resulting in a long service deployment cycle

3) Even for commonly used standard protocols, such as TCP protocol, OpenFlow cannot match and process any field in its header

[0020] However, there is no relatively complete POF-based SDN network virtualization management platform; in view of this, it is necessary to conduct in-depth research on this

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