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A connection keep-alive method and device between SDN devices

A technology between devices and devices, applied in the field of communication, can solve the problems of disconnection between switches and control devices, and the inability to send or process keep-alive messages in time, so as to enhance the effect of keep-alive

Active Publication Date: 2017-11-14
NEW H3C TECH CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] In view of this, the present invention provides a connection keep-alive method and device between SDN devices to solve the problem that when there are too many PacketIn messages and Packet Out messages, the keep-alive messages cannot be obtained in time within the duration of the keep-alive timer. Send or process, so that the connection between the switch and the control device is disconnected

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  • A connection keep-alive method and device between SDN devices
  • A connection keep-alive method and device between SDN devices
  • A connection keep-alive method and device between SDN devices

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Embodiment Construction

[0017] Currently, the most popular SDN technology is the OpenFlow protocol, which will be described below using the OpenFlow protocol as an example. It should be noted that this application does not exclude other protocols that can implement SDN functions.

[0018] A kind of network environment that the embodiment of the present invention applies is such as figure 1 As shown, in the SDN network built by the OpenFlow protocol, it includes a control device, multiple OpenFlow switches (SW1, SW2, SW3) and hosts connected to different OpenFlow switches. Wherein, the OpenFlow switch may be an actual switch or a VSwitch (Virtual Switch, virtual switch). The OpenFlow protocol can be run between the control device and the OpenFlow switch through the control channel.

[0019] In an SDN network, an OpenFlow switch and a control device can communicate through an SDN control message, and the SDN control message can be a Packet In message or a Packet Out message. The message sent from the...

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Abstract

The present invention provides a connection keep-alive method and device between SDN devices. The method includes: when the number of SDN control messages transmitted between the peer device and the peer device reaches a first preset number, check The number of keep-alive messages sent to the peer device during the set number of SDN control messages; if the number of keep-alive messages is not greater than the second preset number, send the keep-alive message to the peer device. The present invention can effectively ensure that the keep-alive connection between SDN devices is normal when there are too many SDN control messages.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular to a method and device for keeping alive connections between SDN (Software Defined Network, software defined network) devices. Background technique [0002] The SDN network is a new type of network architecture, which can separate the control plane and the data plane of the network equipment, the control plane function is realized by the control device (Controller), and the data plane function is realized by several switches (Switch). [0003] After the switch in the SDN network establishes a connection with the control device, the two parties can regularly send keep-alive messages to each other by using the keep-alive timer to maintain the validity of the connection. However, in actual application scenarios, there will be a large number of Packet In (receiving data packets) messages and Packet Out (sending data packets) messages between the switch and the contr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/26
Inventor 张庆军
Owner NEW H3C TECH CO LTD
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