公开(公告)号：US09509602B2

公开(公告)日：2016-11-29

申请号：US14181483

申请日：2014-02-14

Applicant: FORCE10 NETWORKS, INC

Inventor： Janardhanan P. Narasimhan ,  Krishnamurthy Subramanian ,  Thayumanavan Sridhar

IPC: H04L12/28 ,  H04L12/741 ,  H04L12/931 ,  H04L12/947

CPC classification number: H04L45/74 ,  H04L49/25 ,  H04L49/351 ,  H04L49/70

Abstract: A LAN includes a CORE switch, some number of TOR switches, each linked to the CORE switch, and each of the TOR switches are linked directly to some number of host devices. Each of the switches in the LAN operate to process and transmit data frames they receive from neighboring LAN devices. Each TOR switch in the LAN builds and maintains a layer-2 forwarding table that is comprised of MAC address information learned from frames they receive from neighboring LAN devices. Selected ports/VLAN s on some or all of the TOR devices are designated to be CORE/switch facing ports (CFP) or host facing ports (HFP). Each of the CFPs are configured to only learn the MAC address in unicast frames it receives and each of the HFPs can be configured to learn the MAC address of both unicast and multicast data frames provided the destination MAC address included in the unicast frame is known.

Abstract translation: LAN包括CORE交换机，一些TOR交换机，每个都连接到CORE交换机，每个TOR交换机直接链接到一些主机设备。 LAN中的每个交换机操作以处理和发送从相邻LAN设备接收的数据帧。 LAN中的每个TOR开关构建并维护一个二层转发表，其包括从从相邻LAN设备接收的帧中学习的MAC地址信息。 某些或所有TOR设备上的所选端口/ VLAN被指定为CORE /交换机端口（CFP）或主机端口（HFP）。 每个CFP被配置为仅在所接收的单播帧中学习MAC地址，并且如果已知单播帧中包括的目的地MAC地址，则可以将每个HFP配置为学习单播和多播数据帧的MAC地址。