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Software-defined optical network controller deployment method based on multipath survivability protection

A software-defined and controller-based technology, which is applied to multiplexing system selection devices, electrical components, selection devices, etc., can solve the problem of failure to effectively reduce the control plane without considering that network nodes are controlled by multiple controllers. Control redundancy and other issues to achieve the effect of easy link length and low failure probability

Pending Publication Date: 2021-09-03
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

However, this method does not take into account the situation that network nodes are controlled by multiple controllers, and fails to effectively reduce the control redundancy of the control plane, and there is still room for further optimization.

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  • Software-defined optical network controller deployment method based on multipath survivability protection
  • Software-defined optical network controller deployment method based on multipath survivability protection
  • Software-defined optical network controller deployment method based on multipath survivability protection

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Embodiment Construction

[0037] The technical solutions in the embodiments of the present invention will be described clearly and in detail below with reference to the drawings in the embodiments of the present invention. The described embodiments are only some of the embodiments of the invention.

[0038] The technical scheme that the present invention solves the problems of the technologies described above is:

[0039] Such as figure 1 Shown is a controller deployment model diagram based on multipath survivability protection applied in the present invention, and different types of lines represent control links of different controllers. figure 1 The SDN switch in the middle is jointly controlled by one or more controllers. As long as the SDN switch does not lose contact with all connected controllers, the survivability of the control plane can be guaranteed. The deployment position of the management and control center is determined by the communication time between the controllers. Delay minimum co...

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Abstract

The invention discloses a software-defined optical network controller deployment method based on multipath survivability protection, belongs to the technical field of networks, and is applied to deployment of a two-layer SDN (Software Defined Network) controller. On the premise that the survivability requirement of a user for a control plane is guaranteed, the situation of multi-controller multi-path collaborative management and control of exchange nodes is provided, the number of controllers is further reduced, and the control cost is further reduced. According to the method, a controller deployment scheme in which a switch and a controller have a unique link is firstly solved, the scheme contains redundant controllers, and the number of the controllers needs to be further reduced. According to the method, a posterior idea is adopted, that is, whether the fault probability of each switch is lower than the fault probability required by a user is verified according to a deployment result. The number of the controllers is gradually reduced, and the survival probability of the switch is ensured all the time until the deployment number of the controllers reaches the minimum. And finally, selecting the controller with the lowest communication time delay as a management and control center to complete the deployment work of the whole control plane.

Description

technical field [0001] The present invention belongs to the multipath survivability design part of the control plane in the software-defined optical network, and specifically relates to the deployment method of the two-layer SDN controller that integrates regional management and control and centralized management and control in the control plane. Background technique [0002] With the rapid growth of IP services, people's demand for network bandwidth is becoming higher and higher, and the requirement for dynamic allocation of network bandwidth is also becoming more and more urgent. Therefore, the optical network plays an increasingly important role in modern information technology with its powerful transmission capability. [0003] Software Defined Optical Networks (SDON) is a specific application of Software Defined Networks (SDN) at the control level of intelligent optical networks. It divides the optical network into a data plane and a control plane. Among them, the data...

Claims

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Application Information

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IPC IPC(8): H04Q11/00
CPCH04Q11/0062H04Q11/0005H04Q2011/009H04Q2011/0079Y02D30/50
Inventor 曾帅林安唐文强
Owner CHONGQING UNIV OF POSTS & TELECOMM
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