公开(公告)号：US20120287930A1

公开(公告)日：2012-11-15

申请号：US13068540

申请日：2011-05-13

申请人： Pirabhu Raman

发明人： Pirabhu Raman

IPC分类号： H04L12/56

CPC分类号： H04L45/02

摘要： In one embodiment, a method includes receiving a packet at a fabric extender, performing a look up in a flow table at the fabric extender for a flow associated with the packet, processing the packet at the fabric extender based on an entry in the flow table if an entry for the flow is found in the flow table, and forwarding the packet to an upstream network device configured to forward the packet if an entry for the flow is not found in the flow table. An apparatus is also disclosed.

摘要翻译： 在一个实施例中，一种方法包括在结构扩展器处接收分组，在结构扩展器的流表中执行与分组相关联的流的查找，基于流表中的条目在结构扩展器处理分组 如果在流表中找到流的条目，并且如果在流表中没有找到流的条目，则将分组转发到被配置为转发分组的上游网络设备。 还公开了一种装置。

公开(公告)号：US08467294B2

公开(公告)日：2013-06-18

申请号：US12931821

申请日：2011-02-11

申请人： Pirabhu Raman ,  Deepak Cherian ,  Hariharan Balasubramanian ,  Ramprasad Nagaraja Rao

发明人： Pirabhu Raman ,  Deepak Cherian ,  Hariharan Balasubramanian ,  Ramprasad Nagaraja Rao

IPC分类号： G01R31/08

CPC分类号： H04L47/125 ,  H04L47/30

摘要： In one embodiment, a method includes receiving a packet at an input port of a network device, the input port having a plurality of queues with at least one queue for each output port at the network device, identifying a port group for transmitting the packet from the network device, the port group having a plurality of members each associated with one of the output ports, and selecting one of the queues based on utilization of the members. An apparatus for load balancing is also disclosed.

摘要翻译： 在一个实施例中，一种方法包括在网络设备的输入端口处接收分组，所述输入端口具有多个队列，其具有用于网络设备处的每个输出端口的至少一个队列，标识用于从所述网络设备发送分组的端口组 所述网络设备，所述端口组具有多个成员，每个成员与所述输出端口之一相关联，并且基于所述成员的使用来选择所述队列之一。 还公开了一种用于负载平衡的装置。

公开(公告)号：US08249069B2

公开(公告)日：2012-08-21

申请号：US12798131

申请日：2010-03-30

申请人： Pirabhu Raman ,  Dinesh Dutt ,  Mahesh Maddury ,  Subbarao Arumilli ,  Vijay Rangarajan ,  Ray Kloth ,  Sanjay Sane

发明人： Pirabhu Raman ,  Dinesh Dutt ,  Mahesh Maddury ,  Subbarao Arumilli ,  Vijay Rangarajan ,  Ray Kloth ,  Sanjay Sane

IPC分类号： H04L12/28

CPC分类号： H04L49/201 ,  H04L45/60 ,  H04L49/354 ,  H04L49/70

摘要： In one embodiment, a method includes receiving a multi-destination packet at a switch in communication with a plurality of servers through a network device, identifying a port receiving the multi-destination packet at the switch or a forwarding topology for the multi-destination packet, selecting a bit value based on the identified port or forwarding topology, inserting the bit value into a field in a virtual network tag in the multi-destination packet, and forwarding the multi-destination packet with the virtual network tag to the network device. The network device is configured to forward the multi-destination packet to one or more of the servers based on the bit value in the multi-destination packet. An apparatus for forwarding multi-destination packets is also disclosed.

摘要翻译： 在一个实施例中，一种方法包括通过网络设备在与多个服务器通信的交换机处接收多目的地分组，识别在交换机处接收多目的地分组的端口或多目的地分组的转发拓扑 基于所识别的端口或转发拓扑来选择位值，将所述位值插入到所述多目的地分组中的虚拟网络标签中的字段中，并将具有所述虚拟网络标签的所述多目的地分组转发到所述网络设备。 网络设备被配置为基于多目的地分组中的比特值将多目的地分组转发到一个或多个服务器。 还公开了用于转发多目的地分组的装置。

公开(公告)号：US08514743B2

公开(公告)日：2013-08-20

申请号：US12802951

申请日：2010-06-17

申请人： Pirabhu Raman ,  Sanjay Sane ,  Kalyan Ghosh ,  Yuan-Chi Ma ,  Man-Yee Hau

发明人： Pirabhu Raman ,  Sanjay Sane ,  Kalyan Ghosh ,  Yuan-Chi Ma ,  Man-Yee Hau

IPC分类号： H04L12/28

CPC分类号： G06F11/2007 ,  H04L49/65 ,  H04L49/70

摘要： In one embodiment, a method includes configuring a first network device for operation in a first logical group with a second network device, receiving information from other network devices configured for operation in a second logical group, the information uniquely identifying each of the other network devices within the second logical group, and assigning a priority to each link connecting the first network device to the second logical group network devices. A portion of the links are selected as active links based on the link priorities and the link priorities are assigned such that a balance of active links is maintained across the second logical group network devices. An apparatus for maintaining a balance of active links across the network devices is also disclosed.

摘要翻译： 在一个实施例中，一种方法包括配置用于与第二网络设备在第一逻辑组中操作的第一网络设备，从被配置为在第二逻辑组中操作的其他网络设备接收信息，所述信息唯一地标识每个其他网络设备 在所述第二逻辑组内，并且将连接所述第一网络设备的所述链路的优先级分配给所述第二逻辑组网络设备。 链路的一部分基于链路优先级被选择为活动链路，并且分配链路优先级，使得在第二逻辑组网络设备之间维持活动链路的平衡。 还公开了一种用于维持横跨网络设备的活动链路的平衡的装置。

公开(公告)号：US08401026B2

公开(公告)日：2013-03-19

申请号：US12467675

申请日：2009-05-18

申请人： Pirabhu Raman ,  Sanjay Sane ,  Kalyan Ghosh

发明人： Pirabhu Raman ,  Sanjay Sane ,  Kalyan Ghosh

IPC分类号： H04L12/28

CPC分类号： H04L45/00 ,  H04L45/24 ,  H04L45/58

摘要： Two or more network devices can automatically coordinate to aggregate ports into virtual port channels. Ports of the port channel can be automatically assigned priorities to achieve about an equal distribution of active links across the two or more network devices.

摘要翻译： 两个或多个网络设备可以自动协调将端口聚合成虚拟端口通道。 端口通道的端口可以自动分配优先级，以实现跨两个或多个网络设备的主动链路的相等分配。

公开(公告)号：US20120207175A1

公开(公告)日：2012-08-16

申请号：US12931821

申请日：2011-02-11

申请人： Pirabhu Raman ,  Deepak Cherian ,  Hariharan Balasubramanian ,  Ramprasad Nagaraja Rao

发明人： Pirabhu Raman ,  Deepak Cherian ,  Hariharan Balasubramanian ,  Ramprasad Nagaraja Rao

IPC分类号： H04L12/56

CPC分类号： H04L47/125 ,  H04L47/30

摘要： In one embodiment, a method includes receiving a packet at an input port of a network device, the input port having a plurality of queues with at least one queue for each output port at the network device, identifying a port group for transmitting the packet from the network device, the port group having a plurality of members each associated with one of the output ports, and selecting one of the queues based on utilization of the members. An apparatus for load balancing is also disclosed.

摘要翻译： 在一个实施例中，一种方法包括在网络设备的输入端口处接收分组，所述输入端口具有多个队列，其具有用于网络设备处的每个输出端口的至少一个队列，标识用于从所述网络设备发送分组的端口组 所述网络设备，所述端口组具有多个成员，每个成员与所述输出端口之一相关联，并且基于所述成员的使用来选择所述队列之一。 还公开了一种用于负载平衡的装置。

公开(公告)号：US20100290472A1

公开(公告)日：2010-11-18

申请号：US12467675

申请日：2009-05-18

申请人： Pirabhu Raman ,  Sanjay Sane ,  Kalyan Ghosh

发明人： Pirabhu Raman ,  Sanjay Sane ,  Kalyan Ghosh

IPC分类号： H04L12/56

CPC分类号： H04L45/00 ,  H04L45/24 ,  H04L45/58

摘要： Two or more network devices can automatically coordinate to aggregate ports into virtual port channels. Ports of the port channel can be automatically assigned priorities to achieve about an equal distribution of active links across the two or more network devices.

摘要翻译： 两个或多个网络设备可以自动协调将端口聚合成虚拟端口通道。 端口通道的端口可以自动分配优先级，以实现跨两个或多个网络设备的主动链路的相等分配。

公开(公告)号：US08855117B2

公开(公告)日：2014-10-07

申请号：US13569224

申请日：2012-08-08

申请人： Karthikeyan Sabhanatarajan ,  Pirabhu Raman

发明人： Karthikeyan Sabhanatarajan ,  Pirabhu Raman

IPC分类号： H04L12/28

CPC分类号： H04L12/1877 ,  H04L45/02 ,  H04L45/16

摘要： Techniques are provided to prevent switches in a data center fabric path environment with fabric path extension devices from media access control (MAC) address flooding and MAC address table overflow. In such an environment, endpoints associated with virtual port channels are connected to multiple switches which normally would perform MAC address flooding across all switch forwarding engines. The switches in the fabric path exchange MAC synchronization messages based on source/destination specific connectivity such that MAC broadcast messages that advertise source/destination MAC addresses for endpoints do not have to be repeatedly sent and their corresponding MAC lookup tables do not have to be updated or include unnecessary MAC table entries.

摘要翻译： 提供技术来防止来自媒体访问控制（MAC）地址泛滥和MAC地址表溢出的布局路径扩展设备的数据中心结构路径环境中的交换机。 在这种环境中，与虚拟端口通道相关联的端点连接到多个交换机，通常会在所有交换机转发引擎上执行MAC地址泛滥。 结构路径中的交换机基于源/目的地特定连接交换MAC同步消息，使得不需要重复发送用于端点的发送源/目的MAC地址的MAC广播消息，并且不必更新其对应的MAC查找表 或者包括不必要的MAC表项。

公开(公告)号：US20140044126A1

公开(公告)日：2014-02-13

申请号：US13569224

申请日：2012-08-08

申请人： Karthikeyan Sabhanatarajan ,  Pirabhu Raman

发明人： Karthikeyan Sabhanatarajan ,  Pirabhu Raman

IPC分类号： H04L12/66

CPC分类号： H04L12/1877 ,  H04L45/02 ,  H04L45/16

摘要： Techniques are provided to prevent switches in a data center fabric path environment with fabric path extension devices from media access control (MAC) address flooding and MAC address table overflow. In such an environment, endpoints associated with virtual port channels are connected to multiple switches which normally would perform MAC address flooding across all switch forwarding engines. The switches in the fabric path exchange MAC synchronization messages based on source/destination specific connectivity such that MAC broadcast messages that advertise source/destination MAC addresses for endpoints do not have to be repeatedly sent and their corresponding MAC lookup tables do not have to be updated or include unnecessary MAC table entries.

摘要翻译： 提供技术来防止来自媒体访问控制（MAC）地址泛滥和MAC地址表溢出的布局路径扩展设备的数据中心结构路径环境中的交换机。 在这种环境中，与虚拟端口通道相关联的端点连接到多个交换机，通常会在所有交换机转发引擎上执行MAC地址泛滥。 结构路径中的交换机基于源/目的地特定连接交换MAC同步消息，从而不必重复发送用于端点发布源/目的MAC地址的MAC广播消息，并且不必更新其对应的MAC查找表 或者包括不必要的MAC表项。

公开(公告)号：US08204061B1

公开(公告)日：2012-06-19

申请号：US12460719

申请日：2009-07-23

申请人： Sanjay Sane ,  Smita Rai ,  Pirabhu Raman ,  Umesh Mahajan

发明人： Sanjay Sane ,  Smita Rai ,  Pirabhu Raman ,  Umesh Mahajan

IPC分类号： H04L12/28 ,  H04L12/56 ,  G06F15/173

CPC分类号： H04L12/462 ,  H04L49/356 ,  H04L49/552 ,  H04L49/557 ,  H04L49/70

摘要： In one embodiment, an apparatus includes one or more ports for connection to one or more links in communication with a network device, a multi-chassis trunk (MCT) port for connection to an MCT in communication with a switch, and an MCEC manager for creating an MCEC comprising the one or more links in communication with the network device and one or more links connecting the switch to the network device, and transmitting messages to the switch to synchronize state for the MCEC. The apparatus further includes a control plane and a data plane configured for operation independent from a control plane and a data plane at the switch. A method is also disclosed.

摘要翻译： 在一个实施例中，装置包括用于连接到与网络设备通信的一个或多个链路的一个或多个端口，用于连接到与交换机通信的MCT的多机箱中继线（MCT）端口，以及用于与交换机通信的MCEC管理器 创建包括与网络设备通信的一个或多个链路和将交换机连接到网络设备的一个或多个链路以及向交换机发送消息以同步MCEC的状态的MCEC。 该装置还包括控制平面和数据平面，该数据平面被配置用于与开关处的控制平面和数据平面无关的操作。 还公开了一种方法。