Mechanism for increasing hierarchically-distributed SDN (Software Defined Network) control plane routing efficiency

A control plane, distributed technology, applied in digital transmission systems, electrical components, transmission systems, etc., can solve problems such as performance bottlenecks of distributed control planes at the SDN level

Active Publication Date: 2016-08-10
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0006] [Purpose of the invention]: Aiming at the performance bottleneck problem of the existing SDN-level distributed control plane in large-scale network applications, a mechanism for improving its routing calculation efficiency is proposed

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  • Mechanism for increasing hierarchically-distributed SDN (Software Defined Network) control plane routing efficiency
  • Mechanism for increasing hierarchically-distributed SDN (Software Defined Network) control plane routing efficiency
  • Mechanism for increasing hierarchically-distributed SDN (Software Defined Network) control plane routing efficiency

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Embodiment Construction

[0042] The mechanism of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0043] The present invention is aimed at the scalability problem of the hierarchical distributed SDN control plane in the large-scale OpenFlow network environment. The present invention proposes a mechanism for improving the routing efficiency of the hierarchical distributed SDN control plane. Divide and conquer with routing requests, reduce the search space of routing algorithms through topology aggregation and blocking island paradigm, and propose a detailed distributed routing algorithm. The routing in the network is divided into three levels, which reduces the average time complexity of the routing algorithm, and is especially suitable for applications such as data centers and campus networks. The goal of the present invention is to reduce the time delay of the control plane by dividing and conquering the network resources and business fl...

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Abstract

The invention discloses a mechanism for increasing hierarchically-distributed SDN (Software Defined Network) control plane routing efficiency, and aims to solve the problem of extensibility in SDN controller deployment under a large-scale OpenFlow network environment. A routing request in a network is partitioned into three levels according to a source IP address and a destination IP address of a data packet; a CSR algorithm is adopted for a routing request in a local area network; and a global routing request is processed as completely-distributed control routing. According to the mechanism, a BI (Blocking Island) graph is built according to a BI theory, and a global network is subjected to topology aggregation in order to reduce search space of a routing algorithm.

Description

technical field [0001] The invention discloses a mechanism for improving the routing efficiency of the hierarchical distributed software-defined network (SDN) control plane, which is used to solve how the controller configures network resources and processes routing requests in a large-scale network environment, thereby improving the control plane Scalability issues. The invention belongs to the field of network data transmission. Background technique [0002] With the increasing scale and complexity of the Internet and the continuous expansion of the scope of applications, many emerging network services have put forward more stringent requirements for the services that the network can provide. For example: the transmission of huge amounts of data in the data center puts forward higher requirements on network bandwidth; online real-time interactive applications require network delays to be controlled within a few milliseconds; Internet telephony is very sensitive to packet ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/721H04L12/729H04L45/125
CPCH04L45/124H04L45/125
Inventor 陈兵朱向阳
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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