Area control equipment, domain control equipment and control system for SDN (Software Defined Networking)

A technology for regional control and device control, applied in the Internet field, which can solve problems such as long transmission delay, decreased control plane processing capability, and inability to solve control plane scalability problems.

Inactive Publication Date: 2016-02-24
TSINGHUA UNIV
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Problems solved by technology

[0008] Hierarchical centralized architecture Since the top layer is a centralized controller, when the geographical location of the switch is far from the controller, the transmission delay is too long, which will lead to the accumulation of message processing on the control plane, resulting in a sharp decline in the processing capacity of the control plane, which in turn causes the message processing storm
At the same time, the hierarchical centralized architecture cannot solve the problem tha

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  • Area control equipment, domain control equipment and control system for SDN (Software Defined Networking)
  • Area control equipment, domain control equipment and control system for SDN (Software Defined Networking)
  • Area control equipment, domain control equipment and control system for SDN (Software Defined Networking)

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Embodiment Construction

[0056] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0057] Embodiments of the present invention provide an SDN control plane system suitable for large-scale networks with low delay and strong scalability in the case of large-scale networks. A hierarchical structure is used to organize the multi-controllers of SDN, but the top-level controllers are still distributed.

[0058] Such as figure 1 As shown, the hierarchical SDN multi-controller system can be divided from bottom to top: the underlying network device layer (Layer0), the regional control device layer (Layer1) directly connected to the network device, and the domain control device layer (Layer2 ). In this embodiment, by layering and abstracting information such as network message processing and network views, the growth of computing time of the control pla...

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Abstract

The invention discloses area control equipment, domain control equipment and a control system for SDN (Software Defined Networking). The area control equipment is used for collecting equipment state and network topology information of a data plane, and comprises an area host management module, a link discovery module, an area topology management module and an area routing computation module. The domain control equipment is used for collecting a network state and information mastered by a lower-layer controller and acquiring network information mastered by other domain controllers in a distributed way, and comprises a domain host management module, a domain topology management module and a domain routing computation module. Super-linear growth of SDN controller plane computation complexity is lowered to linear growth through construction of an abstract hierarchical view, thereby solving the expandability problem of a control plane in a control domain when the SDN is applied to a large-scale network.

Description

technical field [0001] The present invention relates to the technical field of the Internet, and in particular, relates to an area control device, a domain control device and a control system for an SDN network. Background technique [0002] Software Defined Networking (Software Defined Networking, SDN) is a new type of network architecture. Its design concept is to separate the control plane of the network from the data forwarding plane, so as to realize programmable control through the software platform in the centralized controller. The underlying hardware enables flexible on-demand deployment of network resources. In an SDN network, network devices are only responsible for simple data forwarding, and general-purpose hardware can be used, while the original operating system responsible for control will be refined into an independent network operating system, which is responsible for adapting different service characteristics, and the network operating system and Communic...

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Application Information

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IPC IPC(8): H04L12/24
CPCH04L41/042H04L41/044H04L41/12
Inventor 毕军付永红陈泽高凯
Owner TSINGHUA UNIV
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