Method for preventing group paging source side flow diffusion of three exchange environment and its device

Abstract

This invention discloses a method for preventing diffusion of side-flows of multicast source in a three-layer exchange environment, which first of all configures a management module for multicast source entry interfaces and sets up a management list for registering the original address of the multicast data messages and physical port number for receiving said message, in which, after a multicast transmission layer sends the message to the management module, it looks for the related recordings in the list based on the original address in the message, if it does not find it, it sets up a new recording, if it finds out it, the recorded physical port number should be the same with that of the message received currently, then the management module sends the message to the multicast protocol layer to be processed and receives the multicast route items, then searches for related recordings based on the original address in the item and fills the physical port number found out in the recording in the position of the entry interface physical port of the route item.

Description

technical field [0001] The invention relates to a method and a device for preventing multicast stream diffusion between a multicast source and a switching device directly connected to the IP multicast in an exchange environment. Background technique [0002] IP multicast technology effectively solves the problem of single-point transmission and multi-point reception, and realizes efficient point-to-multipoint data transmission in the IP network, which can greatly save network bandwidth and reduce network load. As a communication method parallel to unicast and broadcast, the significance of multicast is not limited to this. More importantly, the multicast feature of the network can be used to provide some new value-added services conveniently, including Internet information service fields such as online live broadcast, Internet TV, distance education, telemedicine, Internet radio, and real-time video conferencing. Due to the above-mentioned characteristics of IP multicast, i...

AI Technical Summary

Problems solved by technology

For receivers on different physical ports in the same Vlan as the source, two different processing methods will be produced at this time: one is to forward all physical ports of this Vlan, which will cause multicast flow to spread; Forwarding, at this time it will cause a disconnection

[0008] In order to prevent the occurrence of the above situation, currently only one Layer 2 link can exist in the Vlan between the source and the directly connected switching device, thus limiting the application of multicast

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