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1. 发明授权

US09413649B2 Virtual network device architecture 有权
标题翻译：虚拟网络设备架构
公开(公告)号：US09413649B2
公开(公告)日：2016-08-09
申请号：US12722568
申请日：2010-03-12
申请人： Krishnamurthy Subramanian , Rahul Kulkarni
发明人： Krishnamurthy Subramanian , Rahul Kulkarni
IPC分类号： G06F7/00 , H04L12/713
CPC分类号： H04L45/745 , H04L45/586 , H04L49/10 , H04L49/253 , H04L69/324 , H04L69/325
摘要： A network device such as a router or a switch is comprised of a control module and a plurality of physical line cards. The control module includes a control processor virtual machine, a plurality of route processing virtual machines and one or more instances of a line card virtual machine. The line card virtual machine operates to receive routing information base update information, to modify the routing information base according to the update information and to update each instance of a plurality of forwarding information bases included on each of the physical line cards.
摘要翻译：诸如路由器或交换机的网络设备由控制模块和多个物理线路卡组成。控制模块包括控制处理器虚拟机，多个路由处理虚拟机和线卡虚拟机的一个或多个实例。线卡虚拟机操作以接收路由信息库更新信息，根据更新信息修改路由信息库，并更新每个物理线路卡上包含的多个转发信息库的每个实例。

2. 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。

3. 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。

4. 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。

5. 发明授权

US08611251B2 Method and apparatus for the distribution of network traffic 有权
标题翻译：网络流量分配的方法和装置
公开(公告)号：US08611251B2
公开(公告)日：2013-12-17
申请号：US13023303
申请日：2011-02-08
申请人： Krishnamurthy Subramanian , Kalpesh Zinjuwadia
发明人： Krishnamurthy Subramanian , Kalpesh Zinjuwadia
IPC分类号： H04L12/28 , H04L12/56
CPC分类号： H04L45/02
摘要： A packet network device, such as a router or switch, includes functionality that operates to receive network traffic, process the traffic as needed and to forward the traffic to its destination. Additionally, each router includes a weighted equal cost multipath routing function that operates to identify equal cost paths over which to forward the network traffic, to calculate a path weighting that is dependent upon the path bandwidth and to forward the traffic ingressing to it over each of the equal cost paths according to the calculated path weighting.
摘要翻译：分组网络设备（例如路由器或交换机）包括操作以接收网络流量的功能，根据需要处理流量并将流量转发到其目的地。另外，每个路由器包括加权的相等成本的多路径路由功能，其操作以识别用于转发网络流量的相同的成本路径，以计算取决于路径带宽的路径加权，并且将流量进入到根据计算的路径加权等成本路径。

6. 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。

7. 发明授权

US08259726B2 Method and apparatus for forwarding table reduction 有权
标题翻译：用于转发表减少的方法和装置
公开(公告)号：US08259726B2
公开(公告)日：2012-09-04
申请号：US12789545
申请日：2010-05-28
申请人： Krishnamurthy Subramanian , Arun Viswanathan
发明人： Krishnamurthy Subramanian , Arun Viswanathan
IPC分类号： H04L12/28
CPC分类号： H04L45/54
摘要： A LAN includes a router that is connected to two or more racks of servers and each of the servers can support a plurality of virtual machines. The router is configured to forward data packets based on IP destination addresses or based on destination MAC addresses and builds and maintains forwarding tables in support of data packet forwarding in the layer 3 and the layer 2 network environment. In support of layer 2 forwarding, the router builds and maintains an aggregated MAC switching table that is comprise of a subset of the table entries typically needed to switch packets to their destination, and in support of layer 3 forwarding, the router or switch builds and maintains an aggregated ARP forwarding table that is comprised of a subset of the table entries typically needed to forward packets to their destination.
摘要翻译： LAN包括连接到两个或更多个服务器机架的路由器，并且每个服务器可以支持多个虚拟机。路由器被配置为基于IP目的地地址或基于目的地MAC地址转发数据包，并构建并维护支持第3层和第2层网络环境中的数据包转发的转发表。为了支持二层转发，路由器建立并维护一个聚合的MAC交换表，它包括通常需要的表条目的子集，用于将数据包切换到目的地，并且为了支持第3层转发，路由器或交换机建立和维护聚合ARP转发表，其包括通常需要将分组转发到其目的地的表条目的子集。

8. 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。

9. 发明申请

US20120275297A1 Multi-Chassis Link Aggregation on Network Devices 有权
标题翻译：网络设备上的多机箱链路聚合
公开(公告)号：US20120275297A1
公开(公告)日：2012-11-01
申请号：US13456459
申请日：2012-04-26
申请人： Krishnamurthy Subramanian
发明人： Krishnamurthy Subramanian
IPC分类号： H04L12/56 , H04L12/24 , H04L12/26 , 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：数据通信网络包括客户端设备和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。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。

10. 发明授权

US08218537B1 Dual signaling format switch fabric with multiplex capability 有权
标题翻译：具有复用能力的双信令格式交换结构
公开(公告)号：US08218537B1
公开(公告)日：2012-07-10
申请号：US12156339
申请日：2008-05-30
申请人： Ann Gui , Krishnamurthy Subramanian , Glenn Poole , Joel R. Goergen , Joanna Lin
发明人： Ann Gui , Krishnamurthy Subramanian , Glenn Poole , Joel R. Goergen , Joanna Lin
IPC分类号： H04L12/56 , H04J1/16
CPC分类号： H04L49/40 , H04L49/101
摘要： A serial channel switch circuit and modular packet switch using the serial channel switch circuits are disclosed. The serial channel switch circuit has a reconfigurable table for internal logical-to-physical channel switch translation. Depending on the slot in which a card containing such a serial channel switch circuit is inserted in the modular packet switch, its serial channel switch circuit may receive a different set of reconfigurable table values that are specific to that location. A global set of logical channel values can be applied to each card, which performs logical-to-physical channel mapping according to its location in the modular packet switch. Other embodiments are also described and claimed.
摘要翻译：公开了使用串行通道切换电路的串行通道切换电路和模块化分组交换机。串行通道切换电路具有用于内部逻辑到物理信道切换转换的可重配置表。根据其中包含这种串行通道切换电路的卡被插入到模块化分组交换机中的插槽，其串行通道切换电路可以接收特定于该位置的不同的一组可重新配置的表值。可以将每个逻辑信道值的全局集合应用于根据其在模块化分组交换机中的位置执行逻辑到物理信道映射的每个卡。还描述和要求保护其他实施例。

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