Address resolution protocol (ARP) message processing method and device

An ARP message and processing method technology, applied in electrical components, transmission systems, etc., can solve problems such as poor network security, and achieve the effects of improving security, avoiding bandwidth resources, and improving proxy efficiency.

Active Publication Date: 2015-08-19
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This application provides a method and device for processing ARP messages, which are used to solve the problem of poor network security caused by the processing mechanism of ARP messages in the existing SDN network

Method used

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  • Address resolution protocol (ARP) message processing method and device
  • Address resolution protocol (ARP) message processing method and device
  • Address resolution protocol (ARP) message processing method and device

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Embodiment Construction

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. example. 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 scope of protection of the embodiments of the present invention.

[0032] Such as figure 2 As shown, it is a schematic flow chart of an ARP message processing method proposed in Embodiment 1. This method is applied to an SDN network including a virtual machine, a forwarding device, and a controller. The method will be implemented on the forwarding device side below. Detailed description.

[0033] The method specifically includes the following steps:

[0034] Step S201, the ...

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PUM

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Abstract

With utilization of the technical scheme of the present invention, forward devices in a software defined network (SDN) report log-on messages sent by virtual machines in the SDN and received by first ports of the forward devices to a controller in the SDN; a first filtering flow table aiming at the first ports and issued by the controller is received, the first filtering flow table comprising IP addresses and MAC addresses of the virtual machines in the log-on messages; and ARP messages, consistent with the IP addresses and the MAC addresses in the first filtering flow table, of the ARP messages received by the first ports are reported to the controller. Therefore, the ARP messages are filtered, illegal ARP messages (attack or fraud ARP messages) are filtered out, the network safety is raised, and the problem that a large amount of illegal ARP messages occupy a lot of bandwidth resources and thus cause a high CPU occupancy rate of the controller is also avoided, thereby raising the ARP message forwarding efficiency of the controller, and reducing hardware resource consumption.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a method and equipment for processing Address Resolution Protocol (ARP) messages. Background technique [0002] Such as figure 1 As shown, it is a schematic diagram of a networking structure of an existing SDN (Software Defined Network, software-defined network). In the existing SDN network, all ARP messages are not broadcast and forwarded, but are answered by the controller (Controller). That is, each forwarding device (such as a virtual switch (Virtual Switch)) in the SDN network reports the received ARP packets to the controller uniformly, and the controller uniformly responds to each ARP packet. [0003] Specifically, the port of the virtual machine in the SDN network needs to register with the controller, and the registration information includes information such as the IP address (ie, Internet Protocol address) and MAC address (ie, Media Access Control address) of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/12H04L29/06
CPCH04L61/103H04L63/0227
Inventor 高庆光张圣彦
Owner NEW H3C TECH CO LTD
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