公开(公告)号：US09215078B2

公开(公告)日：2015-12-15

申请号：US14025491

申请日：2013-09-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hancheng Ding ,  Wentao Li ,  Junjun Song ,  Yu Qin

IPC: H04L12/18 ,  H04L12/46

CPC classification number: H04L12/18 ,  H04L12/1886 ,  H04L12/4641

Abstract: The present invention provides a multicast method and a multicast device. The method includes: receiving a multicast request from a user, where the multicast request includes multicast channel information and a user VLAN tag; selecting a first target multicast VLAN from pre-configured multiple multicast VLANs; after replacing the user VLAN tag in the multicast request with the first target multicast VLAN tag, forwarding the multicast request to a multicast router; receiving multicast traffic sent by the multicast router through the first target multicast VLAN, and forwarding the multicast traffic to the user. In the present invention, a target multicast VLAN is selected according to multicast channel information, so that multicast requests for the same multicast channel can be added to the same multicast VLAN. In this way, only one copy of multicast traffic of the same channel exists on a local area network, thereby saving network bandwidth resources.

Abstract translation: 本发明提供了一种组播方法和组播设备。 该方法包括：从用户接收组播请求，其中组播请求包括组播信道信息和用户VLAN标签; 从预先配置的多个组播VLAN中选择第一个目标组播VLAN; 在用第一个目标组播VLAN标签替换组播请求中的用户VLAN标签后，将组播请求转发给组播路由器; 接收组播路由器通过第一个目标组播VLAN发送的组播流量，并将组播流量转发给用户。 在本发明中，根据组播信道信息选择目的组播VLAN，使同组播信道的组播请求可以添加到同一个组播VLAN。 这样一来，局域网上就只有同一个信道的组播流量只有一个拷贝，从而节省了网络带宽资源。