公开(公告)号：US09838298B2

公开(公告)日：2017-12-05

申请号：US14892483

申请日：2014-07-23

申请人： Hangzhou H3C Technologies Co., Ltd.

发明人： Minghui Wang ,  Qingwen Wang

IPC分类号： H04L12/733 ,  H04L12/46 ,  H04L12/721

CPC分类号： H04L45/122 ,  H04L12/4625 ,  H04L45/12

摘要： A CB device receives a first packet sent from another device through a stacking port. In response to determining, based on source port information carried in the first packet, that the first packet entered the stacking system from a PE device and the first packet is a non-unicast packet, the switch module performs mirroring processing to the first packet to obtain a mirrored packet, and transmits the first packet and the mirrored packet to a packet buffering module of the CB device. In response to determining that a second packet from the packet buffering module entered the stacking system from the PE device and the second packet is the non-unicast packet, the second packet is forbidden from being forwarded through a first-level stacking port of the CB device.