Multicast packet forwarding method and device

A technology of multicast message and forwarding method, which is applied in branch offices providing special service devices, data exchange details, digital transmission systems, etc., can solve the problem of not being able to realize Layer 2 multicast forwarding and Layer 3 multicast forwarding at the same time, etc. To achieve the effect of simplifying the multicast forwarding process, reducing complexity and avoiding broadcast

Inactive Publication Date: 2009-07-08
BEIJING XINWANG RUIJIE NETWORK TECH CO LTD
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  • Abstract
  • Description
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Problems solved by technology

[0010] Embodiments of the present invention provide a method and device for forwarding multicast messages, which realize simultaneous layer-2 forwarding and layer-3 forwarding of multicast messages, making the...

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  • Multicast packet forwarding method and device
  • Multicast packet forwarding method and device
  • Multicast packet forwarding method and device

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Embodiment Construction

[0031] The main realization principles, specific implementation modes and corresponding beneficial effects that can be achieved of the technical solutions of the embodiments of the present invention will be described in detail below in conjunction with each accompanying drawing.

[0032] Such as figure 2 As shown, the main implementation principle flow of Embodiment 1 of the present invention is as follows:

[0033] Step 10, set the multicast forwarding table.

[0034] The multicast forwarding table is composed of several multicast forwarding table items. The basic idea of ​​the multicast forwarding table items is to summarize the three-layer distribution information and the two-layer distribution information according to certain rules, and integrate them into one table. Therefore, each multicast forwarding table entry carries the required multicast source address, multicast group address, upstream VLAN ID, and downstream VLAN ID for layer-3 forwarding, and simultaneously ca...

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Abstract

The invention discloses a multicast message forwarding method and a device. The method comprises the following steps: setting a multicast forwarding table consisting of a plurality of multicast forwarding items, wherein, each multicast forwarding item includes a multicast source address, a multicast group address, an upstream VLAN identifier, a downstream VLAN identifier and downstream port information; matching with the multicast forwarding table when receiving the multicast message, and forwarding the multicast message according to the matched multicast forwarding items if the matching is failed; otherwise, discarding the multicast message. The embodiment of the invention can achieve two-level multicast forwarding and three-level multicast forwarding simultaneously in a single stage system, thereby improving the application range and the network deployment flexibility of route exchange equipment.

Description

technical field [0001] The invention relates to the technical field of computer network communication, in particular to a multicast message forwarding method and device. Background technique [0002] Multicast is a point-to-multipoint communication technology. It delivers multicast packets sent by multicast sources to multiple multicast receivers by duplicating and distributing data packets on routing and switching nodes. Therefore, the basic elements of the multicast forwarding entry are: multicast flow characteristics + egress set. When forwarding, it first judges whether the multicast packet conforms to a specific "multicast flow feature", and if so, sends the multicast packet to each exit in the "exit set". [0003] According to the hierarchical concept defined by the network layering model in the OSI model, an interface (Interface) has a three-layer concept, which refers to a logical interface with three-layer behavior capabilities, and can also be called a three-layer...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L12/18H04L45/16
Inventor 倪宏
Owner BEIJING XINWANG RUIJIE NETWORK TECH CO LTD
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