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在冗余组网架构下,将组播业务数据流备份在备份链路上。当链路故障时,冗余链路进行切换,组播业务数据流能够立即发送给用户。不影响组播业务的提供。
In the redundant networking architecture, the multicast service data flow is backed up on the backup link. When the link is faulty, the redundant link is switched and the multicast service data stream can be sent to the user immediately. Does not affect the provision of multicast services.