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Multicast packet filtering method, device and multicast packet receiving device

A technology for multicasting packets and filtering parameters, which is applied in the field of network communication and can solve problems such as low filtering precision

Active Publication Date: 2020-04-17
ZHUHAI UNITECH POWER TECH CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] Based on this, it is necessary to provide a multicast message filtering method, device and multicast message receiving equipment for the problem that the traditional multicast filtering algorithm has low filtering accuracy and easily brings certain risks to the operation of the device

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  • Multicast packet filtering method, device and multicast packet receiving device
  • Multicast packet filtering method, device and multicast packet receiving device
  • Multicast packet filtering method, device and multicast packet receiving device

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Embodiment Construction

[0064] In order to make the technical solution of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0065] First of all, it should be noted that multicast (Multicast) transmission refers to the realization of a point-to-multipoint network connection between a sender and each receiver. The multicast packets are some protocol packets transmitted in a multicast transmission mode.

[0066] The multicast address refers to the destination MAC address of the multicast packet. MAC (Medium / Media Access Control, Media Access Control) address, also called hardware address, is used to represent the identifier of each site on the Internet, expressed in hexadecimal, with a total of six bytes (48 bits).

[0067] Wherein, it should be noted that, in a specific embodiment of the method for filtering multicast packets of the present invention, prior to filtering and delivering...

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Abstract

The invention discloses a multicast message filtering method, device and multicast message receiving equipment, wherein the method includes: receiving the current multicast message; extracting the corresponding segment number; according to the extracted number, the corresponding first filter parameter is determined from the filter parameters of the corresponding level set in advance, and the current multicast message is filtered step by step according to the determined first filter parameter. It filters the current multicast message according to the pre-set filter parameters of each level, can receive and deliver the multicast message strictly according to the subscribed multicast message, and completely shields the non-subscribed message, thus effectively The filtering precision of the multicast message is improved, and finally the problem that the traditional multicast filtering algorithm has low filtering precision and easily brings certain risks to the operation of the device is solved.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a multicast message filtering method, device and multicast message receiving equipment. Background technique [0002] With the development of smart substations and the increasing application of Ethernet technology in the industrial field, network data communication has gradually become the main way of industrial data interaction. Wherein, since the multicast filtering algorithm of the traditional MAC hardware usually adopts the operation method of uniformly comparing and judging the destination MAC in the message, when the number of received multicast messages increases, its multicast filtering ability gradually decreases, which is very It is easy to cause some unnecessary packets to be received. For receiving devices of multicast messages (such as GOOSE messages or SMV messages) in substations, it is often necessary to receive messages from many different multicas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/761H04L29/06H04L45/16
CPCH04L45/16H04L63/0236
Inventor 杨冬茜陈雷钟振新杨锐岑积利
Owner ZHUHAI UNITECH POWER TECH CO LTD
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