Control network determination method and device

A technology for controlling the network and determining the method, applied in the network field, can solve the problems of the control plane being unable to grasp the network status, network performance degradation, request forwarding rules, etc., to achieve the effect of rationalizing the optimal control network and improving communication reliability

Active Publication Date: 2014-12-10
BEIJING ZHIGU RUI TUO TECH
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Problems solved by technology

In this case, the lost forwarding nodes can still forward data packets according to the existing forwarding rules, but these forwarding nodes cannot request forwarding rules for new flows from the controller, resulting in packet loss
In addition, because some SDN control applications (such

Method used

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  • Control network determination method and device
  • Control network determination method and device
  • Control network determination method and device

Examples

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Embodiment Construction

[0022] The specific implementation manner of the present application will be described in further detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0023] figure 1 It is a schematic flowchart of an embodiment of a method for determining a control network provided in this application. Such as figure 1 As shown, this embodiment includes:

[0024] 110. Determine, at least according to a physical link state between a first controller and multiple forwarding nodes corresponding to the first controller, multiple second A candidate control network.

[0025] For example, an apparatus for determining a control network, as an execution body of this embodiment, executes steps 110-140. Optionally, the device for determining the control network is set in the first controller in the form of software and / or hardware.

[0026]...

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Abstract

An embodiment of the invention provides a control network determination method and device. The method includes: determining multiple first candidate control networks used for a first controller and multiple forwarding nodes at least according to states of physical links between the first controller and the forwarding nodes corresponding to the first controller; for each forwarding node in each first candidate control network, responding to that control flow of the forwarding node can be transmitted to a second controller via a local rerouting mode or reverse path forwarding mode when fault happens between the forwarding node and a previous single-hop node of the forwarding node in the first candidate control network, and determining the forwarding node as a protectable forwarding node in the first candidate control network; at least according to the number of the protectable forwarding nodes in each first candidate control network, determining an optimal control network from the first candidate control networks.

Description

technical field [0001] The embodiments of the present application relate to the field of network technologies, and in particular, to a method and device for determining a control network. Background technique [0002] Software-Defined Networking (SDN for short) is a network architecture in which control and forwarding are separated. In SDN, the forwarding plane is composed of extremely simple forwarding nodes (switches), whose forwarding behavior is completely controlled by a logically centralized controller (controller). When the network fails, the communication between the controller and the forwarding nodes may be interrupted. In this case, the lost forwarding nodes can still forward data packets according to existing forwarding rules, but these forwarding nodes cannot request forwarding rules for new flows from the controller, thus causing packet loss. In addition, because some SDN control applications (such as load balancing, traffic engineering, etc.) need to know th...

Claims

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Application Information

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IPC IPC(8): H04L12/703H04L12/24H04L29/08H04L45/28
Inventor 胡延楠王文东龚向阳阙喜戎于魁飞
Owner BEIJING ZHIGU RUI TUO TECH
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