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