Multicast forwarding method and device

A multicast forwarding table and multicast technology, applied in the field of communication, can solve problems such as multicast traffic flooding, and achieve the effect of avoiding flooding and accurate forwarding.
CN105530188AActive Publication Date: 2016-04-27HANGZHOU DPTECH TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HANGZHOU DPTECH TECH
Publication Date
2016-04-27

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Abstract

The invention provides a multicast flow forwarding method and device. The method is applied to a two-layer switching device located at a multicast source end, and the method comprises the following steps: receiving unknown multicast flow sent by a forwarding chip; obtaining an exit port corresponding to a multicast group media access control layer MAC address of the unknown multicast flow; and establishing a two-layer multicast forwarding entry according to a corresponding relation of the multicast group MAC address and the exit port; issuing the two-layer multicast forwarding entry to the forwarding chip, so that the forwarding chip carries out two-layer forwarding on the unknown multicast flow according to the two-layer multicast forwarding entry. Therefore, by adopting the multicast flow forwarding method and device provided by the invention, the two-layer switching device located at the multicast source end obtains the multicast group MAC address and the exit port corresponding to the multicast flow, and the two-layer multicast forwarding entry is established according to the corresponding relation of the multicast group MAC address and the exit port and is issued to the forwarding chip, so that the multicast flow can be accurately forwarded to avoid flooding of the multicast flow in VLAN.
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Description

technical field

[0001] The present invention relates to the technical field of communication, in particular to a multicast flow forwarding method and device. Background technique

[0002] With the development of the Internet, the application of multicast technology in daily life is becoming more and more extensive. In the existing networking, the Layer 2 switching device at the multicast receiving end can generally learn the router port and member port of the Layer 2 switching device through IGMP-SNOOPING (Internet Group Management Protocol Snooping, Internet Group Management Snooping) technology, and according to the multicast traffic The mapping relationship between MAC (MediaAccessControl, media access control layer) address and member port creates a layer 2 multicast forwarding table item, and then sends the layer 2 multicast forwarding table item to the switch chip, so that the switch chip Forwarding entries forward multicast traffic.

[0003] However, in practical ap...

Claims

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