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Method of ethernet supporting source specific multicast forwarding and apparatus thereof

A multicast forwarding table and Ethernet technology, which is applied in the field of network communication, can solve problems such as difficulty in meeting technical requirements and increasing equipment complexity, and achieve the effect of reducing equipment costs, upgrade costs, and investment costs

Inactive Publication Date: 2006-11-15
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007]2. Since the forwarding mechanism and the protocol stack of the Ethernet switching equipment have been greatly changed, it is difficult for the existing equipment to meet the technical requirements. Significantly improve the existing hardware equipment and increase the complexity of the equipment;
[0008]3. For the original Ethernet switching equipment that realizes multicast forwarding, this technology cannot be realized only through software upgrades

Method used

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  • Method of ethernet supporting source specific multicast forwarding and apparatus thereof
  • Method of ethernet supporting source specific multicast forwarding and apparatus thereof
  • Method of ethernet supporting source specific multicast forwarding and apparatus thereof

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Embodiment Construction

[0045]Core idea of ​​the present invention is: make the information of SSM multicast source SIP be contained in the virtual local area network VLAN of Ethernet, this VLAN that contains SSM multicast source SIP information is called SS-VLAN (Source-special VLAN, source-specific VLAN) The Ethernet switching device configures the multicast forwarding port list based on the SS-VLAN and DMAC address. When the router performs Ethernet encapsulation of the SSM-related IP message, it encapsulates the SS-VLAN as the The switching device can perform SSM forwarding based on SS-VLAN+DMAC.

[0046] Ways to make SS-VLAN contain SSM multicast source SIP information include:

[0047] Establish the corresponding relationship between SIP and SS-VLAN;

[0048] The way to establish this correspondence includes:

[0049] A method of configuring a mapping table from SIP to SS-VLAN, or a method of using a HASH (hash) function between SIP and SS-VLAN, or other methods.

[0050] Introduce a kind of...

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Abstract

The invention discloses an Ethernet-supported source specific multicast (SSM) transmitting method, and its kernel: as making Ethernet package on SSM IP message, adopting SS-VLAN (source specific-virtual local-area network) containing SSM source IP address (SIP) information as VLAN tag, and based on the Ethernet package, making SSM transmission. And it also discloses a router and an Ethernet switch. And it can reduce device and upgrading costs of the whole network and furthest be compatible with the existing devices and reduce investment cost of an operator.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a method and equipment for Ethernet supporting source-specific multicast forwarding. Background technique [0002] In SSM (Source-Specific Multicast, source-specific multicast), the host adopts IGMP (Internet Group Management Protocol, Internet Group Management Protocol) v3 (version 3) to join the multicast group. The multicast group to join also indicates which S (Source) to join, that is, the multicast group sent by the SIP (multicast source, identified by the IP address of the source) source, and the same multicast group sent by other SIP Not accepted by this host. After adopting SSM, the router needs to control the forwarding based on (S, G) (G, namely GIP, multicast group, identified by the group IP address of the IP multicast message), and only the multicast based on specific S and G The message is sent to the host. [0003] For Ethernet switching devices, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56
CPCH04L12/185H04L12/4641H04L45/16
Inventor 李桥吴海军
Owner HUAWEI TECH CO LTD