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Method and system for crossing virtual local network group broadcasting under assigned source group broadcasting protocol extraneous group broadcasting mode

A protocol-independent multicast and virtual local area network technology, applied in the field of cross virtual local area network multicast, which can solve the problem that users cannot accurately receive multicast data packets.

Active Publication Date: 2007-01-03
NEW H3C TECH CO LTD
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Problems solved by technology

[0007] As can be seen from the above, in the PIM SSM mode, when a multicast group includes multiple multicast sources, the method of cross-VLAN multicast will make requests for multicast data packets to different multicast sources of the multicast group users cannot accurately receive the requested multicast data packets

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  • Method and system for crossing virtual local network group broadcasting under assigned source group broadcasting protocol extraneous group broadcasting mode
  • Method and system for crossing virtual local network group broadcasting under assigned source group broadcasting protocol extraneous group broadcasting mode
  • Method and system for crossing virtual local network group broadcasting under assigned source group broadcasting protocol extraneous group broadcasting mode

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[0048] In the present invention, when a user requests a multicast data packet from a different multicast source of the same multicast group, the Layer 2 switch adds a multicast packet to the request message according to the multicast source information in the multicast data packet request message. The sign of the virtual local area network VLAN, and the request information is sent to the three-layer device; the three-layer device establishes the corresponding relationship between the three according to the multicast group information, the multicast source information and the multicast VLAN mark in the request message . After the three-layer device receives the multicast data message, it will add the corresponding multicast VLAN mark for the multicast data message according to the multicast group information and the multicast source information in the multicast data message, and the The multicast data message is sent to the two-layer switch; the two-layer switch can send the mu...

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Abstract

A multicasting method of cross-VLAN under extraneous multicast mode in assigned source multicast protocol includes adding multicast VLAN flag for request information by the second layer switch according to multicast source information in multicast data request message and sending said information to the third layer switch, adding relevant multicast VLAN flag for said message by the third layer switch according to received information in said message and sending said message to the second layer switch then sending said message to relevant user by the second layer switch according to multicast VLAN flag carried in said message. The system for realizing said method is also disclosed.

Description

technical field [0001] The invention relates to the technology of multicasting across virtual local area networks in a network communication system, in particular to a method and system for multicasting across virtual local area networks in a designated source multicast protocol-independent multicast mode. Background technique [0002] Multicast is a point-to-multipoint communication method in which a source host sends information to certain receiving hosts. The multicast source sends a multicast data message, the destination IP address of the multicast data message is the address of a multicast group, and only users who join the multicast group can receive the multicast message. Users who join the same multicast group can be in different virtual local area networks (VLAN, Virtual Local AreaNetwork). Save system bandwidth resources. [0003] figure 1 It is a schematic diagram of the cross-VLAN multicast method. exist figure 1 , the Layer 2 switch includes 3 downlink por...

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Application Information

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IPC IPC(8): H04L12/16H04L12/46H04L12/56H04L29/06H04L12/721
Inventor 周迪王杨张利岗
Owner NEW H3C TECH CO LTD
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