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Data communication method, control equipment and nodes

A technology for controlling nodes and devices, which is applied in the field of data communication, and can solve problems such as the inability to continue forwarding packets, packet loss, and the delivery of flow entries, etc.

Active Publication Date: 2015-06-17
HUAWEI CLOUD COMPUTING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing technology has the following problems: due to the unsatisfactory network status, the arrival time for the control device to send flow entries to each Open Flow switch on the packet transmission path is also different. If the packet passes through the packet transmission path If the switch arrives at an Open Flow switch and the switch has not received the flow entry for the time being or cannot deliver the flow entry to the switch due to network abnormalities, then the packet cannot continue to be forwarded after arriving at the switch, resulting in packet loss

Method used

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  • Data communication method, control equipment and nodes
  • Data communication method, control equipment and nodes
  • Data communication method, control equipment and nodes

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Embodiment Construction

[0084] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0085] Embodiments of the present invention provide a data communication method, such as figure 1 As shown, the method includes:

[0086] 101. The control device acquires a packet transmission path.

[0087] 102. The control device executes the operation of sending corresponding flow entries to each node on the message transmission path at the same time; and instructs the first node on the message transmission path not to execute the received flow entry, and in...

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Abstract

The embodiment of the invention provides a data communication method, control equipment and nodes, and relates to the communication field. While message transmission is finished, the message packet loss possibility is reduced, and the success rate of message transmission is improved. According to the concrete scheme, a message transmission path is obtained, operation of issuing corresponding flow table items to the nodes on the path at the same time is carried out, whether operation of issuing the corresponding flow table items to the nodes on the path at the same time is successful or not is judged, if operation fails, the step of obtaining the message transmission path, the step of issuing the flow table items to the nodes at the same time and the step of judging whether issuing is successful or not are carried out again until all the nodes successfully receive the corresponding flow table items, and if operation succeeds, flow table item triggering information is issued to a head node, the head node is indicated to carry out the received flow table item, and therefore all the nodes transmit messages according to the received corresponding flow table items. The data communication method, the control equipment and the nodes are used for data communication.

Description

technical field [0001] The present invention relates to the communication field, in particular to a data communication method, control device and node. Background technique [0002] Currently, a software-defined network (Software Defined Network, SDN) technology is widely concerned, and Open Flow (Open Flow) is one of the open protocol standards. This technology mainly includes two parts: Open Flow switch and control equipment. The Open Flow switch forwards data according to the flow table (Flow Table), and the control device controls the generation, maintenance and configuration of the flow table. The Open Flow switch is responsible for data forwarding and mainly consists of three parts: Flow Table, Secure Channel and Open Flow Protocol. The security channel is an interface connecting the Open Flow switch and the control device. The control device configures and manages the Open Flow switch according to the format specified in the Open Flow protocol through this interface...

Claims

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Application Information

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IPC IPC(8): H04L12/701
Inventor 娄帅
Owner HUAWEI CLOUD COMPUTING TECH CO LTD
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