Multicast pruning method, protocol independent multicast (PIM) router and group management snooping exchanger
A group management and router technology, applied in the direction of data exchange network, digital transmission system, electrical components, etc.
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[0092] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0093] In the present invention, it is assumed that the group management protocol versions used by the entire network are the same, that is, or uniformly use IGMPv2, or uniformly use IGMPv3, or uniformly use Multicast Listener Discovery Protocol Version 1 (MLDv1, Multicast Listener Discovery Protocol Version1) or uniformly Use MLDv2.
[0094] If the group management protocol adopted by the embodiment of the present invention is IGMPv2 or MLDv1, then different multicast streams are distinguished by multicast group information; if the group management protocol adopted by the embodiment of the present invention is IGMPv3 or MLDv2, then different multicast streams are distinguished by Distinguish between multicast source information and multicast group information.
[0095] The present invention adds three new messages: group management ...
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