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Cross-VLAN layer 2 multicast data transmission method of Ethernet switch

A data transmission method and virtual local area network technology, applied in the field of computer networks, can solve problems such as inability to forward and copy data packets across VLANs

Inactive Publication Date: 2005-11-23
BEIJING HUAWEI DIGITAL TECH
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

[0005] The invention overcomes the deficiency that the existing Ethernet switch Layer 2 multicast cannot forward and copy data messages across VLANs, and provides a Layer 2 multicast data transmission method of the Ethernet switch, so that the Layer 2 multicast of the Ethernet switch can be transmitted across VLANs Function of multicast datagram

Method used

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  • Cross-VLAN layer 2 multicast data transmission method of Ethernet switch
  • Cross-VLAN layer 2 multicast data transmission method of Ethernet switch
  • Cross-VLAN layer 2 multicast data transmission method of Ethernet switch

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Embodiment Construction

[0019] MDV-Multicast Distributing VLAN is a VLAN dedicated to carrying the multicast data stream of the multicast source on the Ethernet switch. The switch can controllably copy the multicast data stream in this VLAN to multiple other on-demand VLANs. Such as figure 2 As shown, MDV receives source IP multicast data streams of multiple multicast groups from the core / aggregation layer, and the switch copies the multicast data messages to the downstream user-on-demand VLAN. figure 2 G1, G2, and G3 represent multicast data streams with multiple multicast groups.

[0020] The MDV protocol calculation entity is a partially extended IGMP Snooping protocol, which can monitor the interaction of IGMP messages between the multicast members distributed in any VLAN of the switch and the router, and learn the link information of the multicast members who need to receive the multicast data stream. As well as the group address of the multicast data stream of the upstream router, the link inform...

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Abstract

This invention provides one data transmission method over VLAN group broadcasting by Ethernet exchanger two layer of multicast, which comprises the following steps: a, establishing one special multicast data flow VLAN to support multicast source on the exchanger; b, operating IGMP Snooping agreement on the exchanger to monitor the interacting of IGMP messages between each member and router ad learning the needed linkage information of each member, wherein, when the exchanger receives the multicast data flow, it establishes new multicast data transfer list and then transfers the multicast message over VLAN to copy to all clicked VLAN and its each user terminal to user.

Description

Technical field [0001] The invention belongs to the technical field of computer networks, and in particular relates to a method for realizing a layer 2 multicast data transmission across VLANs of an Ethernet switch in a network. Background technique [0002] After several years of construction, broadband IP networks have begun to take shape, with high-bandwidth network infrastructure and a considerable number of users. Traditional data network services such as FTP, HTTP, and Email have been unable to meet users' demand for information services. Providing users with new network services and services and increasing broadband network operating income have become the core tasks of current operators. Multicast services such as distance learning, news releases, and Internet TV will become the focus of a new round of operational competition. Community IPTV has become a new network service that operators give priority to and quickly develop; Ethernet has strong multicast capabilities, hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L45/16H04L45/74
Inventor 童剑耿立波
Owner BEIJING HUAWEI DIGITAL TECH
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