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Channel detection parameter negotiation method, device and apparatus

A channel detection and equipment technology, applied in the field of communication, can solve problems such as inconsistent time points, inconsistent time point detection, OpenFlow switches and OpenFlow controller application processing exceptions, etc.

Inactive Publication Date: 2019-01-15
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since there is no uniform detection standard for the ECHO keep-alive mechanism, in actual application deployment, it is easy to have inconsistent ECHO detection times at both ends of the OpenFlow switch and OpenFlow controller, resulting in inconsistent time points at which the two ends detect channel interruption, which in turn causes OpenFlow Abnormal processing of related applications on switches and OpenFlow controllers
At present, no effective solution has been proposed for the problem of inconsistency in the time point detection of channel interruption by the OpenFlow switch and the OpenFlow controller in the software-defined network.

Method used

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  • Channel detection parameter negotiation method, device and apparatus

Examples

Experimental program
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Effect test

example 1

[0081] Figure 6 It is the sequence diagram of the successful detection time negotiation of instance 1, such as Figure 6 As shown, in this example, the channel detection time negotiation process between the OpenFlow switch and the OpenFlow controller includes the following three steps:

[0082]Step 1: The OpenFlow switch is the active initiator of the channel connection. After the OpenFlow channel is established, it sends a channel detection time negotiation request message to the OpenFlow controller. The request message is implemented by extending the experiment message. The extended experiment message format is as follows.

[0083]

[0084] The extended subtype exp_type in the header field is defined as follows:

[0085]

[0086] When an OpenFlow switch sends a detection time negotiation request message, set exp_type to OFPET_NEGOTIATION_REQUEST, and count and interval are set to 3 and 60 seconds by default, and appropriate parameters can be set through configuratio...

example 2

[0092] The detection time negotiation failure between the OpenFlow switch and the OpenFlow controller occurs in the following three situations.

[0093] Case 1: A case in which the parameters in the detection time request message exceed the capability range of the local support.

[0094] Figure 7 It is the sequence diagram of detection time negotiation failure situation 1 of instance 2, such as Figure 7 As shown, in this example, the channel detection time negotiation process between the OpenFlow switch and the OpenFlow controller includes the following three steps:

[0095] Step 1: The OpenFlow switch is the active initiator of the channel connection. After the OpenFlow channel is established, it sends a channel detection time negotiation request message to the OpenFlow controller. The request message is implemented by extending the experiment message. The extended experiment message format is structofp_experiment_negotiation.

[0096] When the OpenFlow switch sends a de...

example 3

[0126] Figure 10 It is the sequence diagram of detection time modification and successful negotiation of Example 3, as shown in Figure 10 As shown, in this example, the real-time modification and negotiation process of the channel detection time parameters of the OpenFlow switch and the OpenFlow controller includes the following three steps:

[0127] Step 1: The OpenFlow switch and the OpenFlow controller have successfully negotiated the channel detection time. In this example, the local parameters of the OpenFlow switch are configured as 2 and 30 seconds, and the OpenFlow controller is configured as 3 and 40 seconds. The successfully negotiated parameter count is 3, interval for 40 seconds. Now modify the count of the OpenFlow switch to 4 and the interval to 60 seconds through configuration. The OpenFlow switch immediately sends a new detection time negotiation request message, carrying a count of 4 and an interval of 60; before receiving a response message from the OpenF...

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Abstract

The invention discloses a channel detection parameter negotiation method and device, an apparatus. The method includes that a first OpenFlow device receives a detection time negotiation request message from a second OpenFlow device, wherein the detection time negotiation request message carries the configuration parameter of an ECHO keep-alive message configured by the second OpenFlow device, andthe configuration parameter includes a transmitting time interval and the number of transmitting times; the first OpenFlow device determines a shared configuration parameter negotiated with the secondOpenFlow device according to the local configuration capability information and the configuration parameter of the second OpenFlow device, wherein the configuration capability information includes the value range of the transmitting time interval and the value range of the number of transmitting times; and the first OpenFlow device adds the shared configuration parameter to a detection time negotiation response message, and transmits the detection time negotiation response message to the second OpenFlow device.

Description

technical field [0001] The invention relates to the communication field, in particular to a negotiation method, device and equipment for channel detection parameters. Background technique [0002] As an example of a software-defined network, the OpenFlow (Open Flow) network adopts an architecture in which the control plane and the forwarding plane are separated. figure 1 It is a schematic diagram of the OpenFlow network component architecture. Such as figure 1 As shown, the control plane of the OpenFlow network is realized by the OpenFlow controller (SDN controller), the forwarding plane of the OpenFlow network is realized by the OpenFlow switch (SDN network element), and the OpenFlow protocol is run between the OpenFlow controller and the OpenFlow switch; the OpenFlow control The switch uses the OpenFlow protocol to issue a flow table (Flow Table) and a group table (Group Table) to the OpenFlow switch, thereby achieving the purpose of controlling data forwarding and reali...

Claims

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Application Information

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IPC IPC(8): H04L12/26
CPCH04L43/0811H04L43/50
Inventor 赵艳杰
Owner ZTE CORP
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