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A host learning method and device

The technology of a learning method and a learning device, which is applied in the field of host learning methods and devices, can solve problems such as wrong host information and learning

Active Publication Date: 2018-07-24
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a host learning method and device to solve the problem in the prior art that the control equipment will learn wrong host information

Method used

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  • A host learning method and device
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  • A host learning method and device

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Embodiment Construction

[0021] A network environment to which the embodiments of the present invention are applied is as follows: figure 1 As shown, the SDN network includes a control device, multiple switches (SW1, SW2, SW3) and hosts (Host1, Host2, Host3) that access different switches, and each SW includes multiple ports (Port), For example, SW1 includes SW1-Port1, SW1-Port2, SW1-Port3, and SW1-Port4. The connection between the control device and SW2 is disconnected due to a link failure, the connection between the control device and SW1 and SW3 is normal, and the connections between the switches are normal.

[0022] The current implementation of host learning in an SDN network is as follows: when the control device receives an ARP packet sent by a host connected to a switch, it uses the port of the source switch that sent the ARP packet and the information carried in the ARP packet (source IP address). address, source MAC address, etc.) for host learning. However, after the link between the con...

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PUM

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Abstract

The present invention provides a host learning method and device, the method comprising: receiving a port status message sent by a switch; determining whether the switch port transmitting the port status message is a port that is allowed to learn a host through the port status message; When receiving the protocol packet sent by the switch, if the port of the switch receiving the protocol packet is a port that is allowed to learn the host, learn the host information of the host that sends the protocol packet. The invention can ensure that the control device learns correct host information according to the port that allows learning of the host.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular, to a host learning method and device. Background technique [0002] SDN (Software Defined Network, Software Defined Network) is a new type of network architecture, which can separate the control plane from the data plane of network devices, the controller (Controller) realizes the control plane function, and several switches (Switch) Implement the data plane function. [0003] In an SDN network, the control device maintains the network topology. Under normal circumstances, a link connection is established between the control device and each switch, and a link connection is also established between the switches. The control device receives the ARP ( Address Resolution Protocol) message, it can identify the source switch port that sends the ARP message, so as to perform host learning according to the source switch port and the information carried in the ARP mess...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/741H04L45/74
Inventor 宋小恒
Owner NEW H3C TECH CO LTD