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1. 发明授权

US08681661B2 Limiting MAC address learning on access network switches 有权
标题翻译：限制访问网络交换机的MAC地址学习
公开(公告)号：US08681661B2
公开(公告)日：2014-03-25
申请号：US13280416
申请日：2011-10-25
申请人： Janardhanan P. Narasimhan , Krishnamurthy Subramanian , Thayumanavan Sridhar
发明人： Janardhanan P. Narasimhan , Krishnamurthy Subramanian , Thayumanavan Sridhar
IPC分类号： H04L12/28 , H04L12/56 , G06F15/16
CPC分类号： H04L49/356 , H04L45/54 , H04L45/74 , H04L49/3009 , H04L61/103
摘要： A LAN includes a CORE switch linked to some number of TOR switches, 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/VLANs 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.
摘要翻译： LAN包括链接到一些TOR开关的CORE开关，并且每个TOR开关直接连接到一些主机设备。 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。

2. 发明申请

US20120236859A1 METHOD & APPARATUS FOR CONFIGURING A LINK AGGREGATION GROUP ON A STACKED SWITCH 有权
标题翻译：用于在堆叠开关上配置链路聚合组的方法和装置
公开(公告)号：US20120236859A1
公开(公告)日：2012-09-20
申请号：US13048281
申请日：2011-03-15
申请人： Krishnamurthy Subramanian , Janardhanan P. Narasimhan
发明人： Krishnamurthy Subramanian , Janardhanan P. Narasimhan
IPC分类号： H04L12/56
CPC分类号： H04L49/30 , H04L45/245 , H04L49/70 , Y02D50/30
摘要： Two network switches are configured in a stacked relationship to each other and include link aggregation sub-layer functionality. Switching tables are programmed on each switch with information used to forward packets ingressing to them over a redundant LAG that is identified in the switching table by a port that is a member of the redundant LAG.
摘要翻译：两个网络交换机以彼此堆叠的关系配置，并且包括链路聚合子层功能。切换表在每个交换机上进行编程，其信息用于通过冗余LAG转发数据包，通过冗余LAG的端口在交换表中标识的冗余LAG。

3. 发明授权

US08243729B2 Multiple chassis stacking using front end ports 有权
标题翻译：使用前端口多台机箱堆叠
公开(公告)号：US08243729B2
公开(公告)日：2012-08-14
申请号：US12828514
申请日：2010-07-01
申请人： Krishnamurthy Subramanian , Raja Jayakumar , Janardhanan P. Narasimhan
发明人： Krishnamurthy Subramanian , Raja Jayakumar , Janardhanan P. Narasimhan
IPC分类号： H04L12/28
CPC分类号： H04L49/45 , H04L45/583 , H04L49/55
摘要： A stacked chassis comprising multiple physical switch/router chassis operates without any special stacking hardware or stacking channels. Instead, a stacking LAG is installed between front-end switch ports on the stacked chassis. The chassis controllers negotiate a master, which controls operation of all chassis in the stack. A stacked-chassis-wide port numbering scheme is used to distribute information to all line cards in the system. Each line card processes the information to distill physical-chassis significant information for operation of that chassis in the stack.
摘要翻译：包括多个物理交换机/路由器机箱的堆叠机架在没有任何特殊堆叠硬件或堆叠信道的情况下运行。相反，堆叠LAG安装在堆叠机箱的前端交换机端口之间。机箱控制器协商主机，控制堆叠中所有机箱的操作。堆叠式机箱范围的端口编号方案用于将信息分发给系统中的所有线路卡。每个线卡处理信息以提取物理机箱重要信息，以便堆叠中的该机箱的操作。

4. 发明申请

US20120039335A1 MULTICAST PACKET FORWARDING USING MULTIPLE STACKED CHASSIS 有权
标题翻译： MULTICAST PACKET FORMARDING USING MULTIPLE STACKED CHASSIS
公开(公告)号：US20120039335A1
公开(公告)日：2012-02-16
申请号：US12856342
申请日：2010-08-13
申请人： Krishnamurthy Subramanian , Raja Jayakumar , Janardhanan P. Narasimhan
发明人： Krishnamurthy Subramanian , Raja Jayakumar , Janardhanan P. Narasimhan
IPC分类号： H04L12/56
CPC分类号： H04L12/18 , H04L12/4641
摘要： A stacked chassis comprising multiple physical switch/router chassis operates without any special stacking hardware or stacking channels. Instead, a stacking LAG is installed between front-end switch ports on the stacked chassis. The chassis controllers negotiate a master, which controls operation of all chassis in the stack. A stacked-chassis-wide port numbering scheme is used to distribute information to all line cards in the system. Each line card processes the information to distill physical-chassis significant information for operation of that chassis in the stack.
摘要翻译：包括多个物理交换机/路由器机箱的堆叠机架在没有任何特殊堆叠硬件或堆叠信道的情况下运行。相反，堆叠LAG安装在堆叠机箱的前端交换机端口之间。机箱控制器协商主机，控制堆叠中所有机箱的操作。堆叠式机箱范围的端口编号方案用于将信息分发给系统中的所有线路卡。每个线卡处理信息以提取物理机箱重要信息，以便堆叠中的该机箱的操作。

5. 发明授权

US08649379B2 Method and apparatus for configuring a link aggregation group on a stacked switch 有权
标题翻译：在堆叠交换机上配置链路聚合组的方法和装置
公开(公告)号：US08649379B2
公开(公告)日：2014-02-11
申请号：US13048281
申请日：2011-03-15
申请人： Krishnamurthy Subramanian , Janardhanan P. Narasimhan
发明人： Krishnamurthy Subramanian , Janardhanan P. Narasimhan
IPC分类号： H04L12/28
CPC分类号： H04L49/30 , H04L45/245 , H04L49/70 , Y02D50/30
摘要： Two network switches are configured in a stacked relationship to each other and include link aggregation sub-layer functionality. Switching tables are programmed on each switch with information used to forward packets ingressing to them over a redundant LAG that is identified in the switching table by a port that is a member of the redundant LAG.
摘要翻译：两个网络交换机以彼此堆叠的关系配置，并且包括链路聚合子层功能。切换表在每个交换机上进行编程，其信息用于通过冗余LAG转发数据包，通过冗余LAG的端口在交换表中标识的冗余LAG。

6. 发明授权

US08442045B2 Multicast packet forwarding using multiple stacked chassis 有权
标题翻译：使用多层堆叠机架的组播数据包转发
公开(公告)号：US08442045B2
公开(公告)日：2013-05-14
申请号：US12856342
申请日：2010-08-13
申请人： Krishnamurthy Subramanian , Raja Jayakumar , Janardhanan P. Narasimhan
发明人： Krishnamurthy Subramanian , Raja Jayakumar , Janardhanan P. Narasimhan
IPC分类号： H04L12/56
CPC分类号： H04L12/18 , H04L12/4641
摘要： A stacked chassis comprising multiple physical switch/router chassis operates without any special stacking hardware or stacking channels. Instead, a stacking LAG is installed between front-end switch ports on the stacked chassis. The chassis controllers negotiate a master, which controls operation of all chassis in the stack. A stacked-chassis-wide port numbering scheme is used to distribute information to all line cards in the system. Each line card processes the information to distill physical-chassis significant information for operation of that chassis in the stack.
摘要翻译：包括多个物理交换机/路由器机箱的堆叠机架在没有任何特殊堆叠硬件或堆叠信道的情况下运行。相反，堆叠LAG安装在堆叠机箱的前端交换机端口之间。机箱控制器协商主机，控制堆叠中所有机箱的操作。堆叠式机箱范围的端口编号方案用于将信息分发给系统中的所有线路卡。每个线卡处理信息以提取物理机箱重要信息，以便堆叠中的该机箱的操作。

7. 发明申请

US20130039218A1 LIMITING MAC ADDRESS LEARNING ON ACCESS NETWORK SWITCHES 有权
标题翻译：限制访问网络交换机的MAC地址学习
公开(公告)号：US20130039218A1
公开(公告)日：2013-02-14
申请号：US13280416
申请日：2011-10-25
申请人： JANARHANAN P. NARASIMHAN , Krishnamurthy Subramanian , Thayumanavan Sridhar
发明人： JANARHANAN P. NARASIMHAN , Krishnamurthy Subramanian , Thayumanavan Sridhar
IPC分类号： H04L12/28
CPC分类号： H04L49/356 , H04L45/54 , H04L45/74 , H04L49/3009 , H04L61/103
摘要： A LAN includes a CORE switch linked to some number of TOR switches, 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/VLANs 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.
摘要翻译： LAN包括链接到一些TOR开关的CORE开关，并且每个TOR开关直接连接到一些主机设备。 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。

8. 发明授权

US08958340B2 System and methods for open fabric management 有权
标题翻译：打开织物管理的系统和方法
公开(公告)号：US08958340B2
公开(公告)日：2015-02-17
申请号：US13524917
申请日：2012-06-15
申请人： Wanqun Bao , Krishnamurthy Subramanian
发明人： Wanqun Bao , Krishnamurthy Subramanian
IPC分类号： H04L12/28 , H04L12/26
CPC分类号： H04L41/046 , H04L41/0806 , H04L41/0893 , H04L49/70
摘要： A system for operating a plurality of information handling systems forming a network including a plurality of switches is provided. The switches include physical and virtual switches each having ports coupling information handling systems to one another. The system including a management unit configured to provide commands to the switches and to collect a status information for each of the switches; and an agent unit coupled to each of the switches, the agent configured to receive the commands from the management unit, provide the commands to the switch associated thereto, monitor status of the switch associated thereto, and provide the status information to the management unit. A method for operating a network and a computer program to perform the method for using a system as above is also provided. A network managing device configured to couple to a service provider in a network as above is also provided.
摘要翻译：提供了一种用于操作形成包括多个开关的网络的多个信息处理系统的系统。交换机包括各自具有将信息处理系统彼此耦合的端口的物理和虚拟交换机。该系统包括：管理单元，被配置为向交换机提供命令并收集每个交换机的状态信息; 以及耦合到每个交换机的代理单元，所述代理被配置为从所述管理单元接收所述命令，向与其相关联的交换机提供命令，监视与其相关联的交换机的状态，并将所述状态信息提供给所述管理单元。还提供了一种用于操作网络的方法和用于执行如上使用系统的方法的计算机程序。还提供了如上所述配置为耦合到网络中的服务提供商的网络管理设备。

9. 发明授权

US08885493B2 Use of test packets by packet switches in computer networks 有权
标题翻译：在计算机网络中通过分组交换机使用测试包
公开(公告)号：US08885493B2
公开(公告)日：2014-11-11
申请号：US13662338
申请日：2012-10-26
申请人： Shivakumar Sundaram , Krishnamurthy Subramanian , Pathangi Narasimhan Janardhanan , Balaji Venkat Venkataswami
发明人： Shivakumar Sundaram , Krishnamurthy Subramanian , Pathangi Narasimhan Janardhanan , Balaji Venkat Venkataswami
IPC分类号： H04J1/16
CPC分类号： H04L43/50 , H04L41/145 , H04L43/10
摘要： A packet switch receives a management packet sent for discovery on a data flow's path through a network. The switch creates a test packet (310T) which looks like a packet belonging to the data flow of interest. The test packet is processed by the switch like the data flow of interest except that the test packet is not necessarily transmitted. The processing results may include the egress ports for the test packet, and if the ports are part of a LAG or ECMP group, the results provide the group and the group members associated with the egress ports. Firewall actions and other information can be included. The switch may forward the results to the originator of the management packet. The switch may insert the results into the management packet and forward the management packet on the ports determined as egress ports for the test packet. Other features are also provided.
摘要翻译：分组交换机通过网络接收在数据流的路径上发送用于发现的管理分组。交换机创建一个看起来像属于感兴趣的数据流的分组的测试分组（310T）。测试分组由感兴趣的数据流由交换机处理，除了测试分组不一定被发送。处理结果可以包括用于测试分组的出口端口，并且如果端口是LAG或ECMP组的一部分，则结果提供与出口端口相关联的组和组成员。可以包括防火墙操作和其他信息。交换机可将结果转发给管理包的发起者。交换机可以将结果插入到管理包中，并将测试包的出口端口确定的端口转发给管理包。还提供其他功能。

10. 发明授权

US08761005B2 Multi-chassis link aggregation on network devices 有权
标题翻译：网络设备上多机箱链路聚合
公开(公告)号：US08761005B2
公开(公告)日：2014-06-24
申请号：US13456459
申请日：2012-04-26
申请人： Krishnamurthy Subramanian
发明人： Krishnamurthy Subramanian
IPC分类号： G01R31/08 , H04L12/28
CPC分类号： H04L45/245 , Y02D50/30
摘要： A data communication network includes a client device and multiple aggregation devices coupled to each other and the client via links within a link aggregation group (“LAG”) across the aggregation devices. The aggregation devices appear to the client as a single device coupled thereto, and operate in conjunction with each other by assigning at least one different identifier to each of the plurality of separate aggregation devices and storing information including the identifiers to association tables located on each of the aggregation devices. The multiple aggregation devices can be separate switches, and the LAG can include multiple ports across the switches, with a different identifier being assigned to each of the ports in the LAG. A virtual link trunk interface can couple aggregation devices, which can reconfigure communication paths thereacross with respect to the client device using the identifiers in the stored association tables when a LAG link fails.
摘要翻译：数据通信网络包括通过聚合设备的链路聚合组（“LAG”）内的链路彼此耦合的客户端设备和多个聚合设备以及客户端。聚合设备作为与其耦合的单个设备出现，并且通过向多个单独的聚合设备中的每一个分配至少一个不同的标识符并将包括标识符的信息存储在位于每个聚合设备。多个聚合设备可以是单独的交换机，并且LAG可以包括跨交换机的多个端口，其中不同的标识符被分配给LAG中的每个端口。虚拟链路中继接口可以耦合聚合设备，当LAG链路发生故障时，可以使用存储的关联表中的标识符来重新配置相对于客户端设备的通信路径。

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