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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: 2007-09-12
BEIJING HUAWEI DIGITAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

[0020] MDV-Multicast Distributing VLAN is a VLAN dedicated to carrying the multicast data flow of the multicast source on the Ethernet switch. The switch can controllably copy the multicast data flow in this VLAN to other multiple on-demand VLANs. As shown in Figure 2, MDV receives source IP multicast data streams of multiple multicast groups from the core / aggregation layer, and the switch copies the multicast data packets to the downlink user-demand VLAN, G1, G2, and G3 in Figure 2 represent Multicast traffic with multiple multicast groups.

[0021] The protocol computing entity of MDV is a part of the extended IGMP Snooping protocol, which can monitor the interaction of IGMP messages between multicast members and routers distributed in any VLAN of the switch, and learn the link information of multicast members who need to receive multicast data streams As well as the group address of the multicast data flow of the uplink router, the link information of the multicast member i...

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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 two-layer multicast data transmission of an Ethernet switch across VLANs in the network. Background technique [0002] After several years of construction, the broadband IP network has 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 difficult to meet users' needs 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 release, and Internet TV will become the focus of a new round of operational competition, and community IPTV will become a new network service that operators prioritize and quickly develop; Ethernet has strong multicast capabil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L12/46H04L29/06H04L12/741H04L12/761
Inventor 童剑耿立波
Owner BEIJING HUAWEI DIGITAL TECH
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