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
CN107733803BActive Publication Date: 2020-04-17ZHUHAI UNITECH POWER TECH CO LTD
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
ZHUHAI UNITECH POWER TECH CO LTD
Publication Date
2020-04-17

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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.
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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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