公开(公告)号：US08767722B2

公开(公告)日：2014-07-01

申请号：US13594993

申请日：2012-08-27

Applicant: Keshav Kamble ,  Amitabha Biswas ,  Dar-Ren Leu ,  Chandarani J. Mendon ,  Nilanjan Mukherjee ,  Vijoy Pandey

Inventor： Keshav Kamble ,  Amitabha Biswas ,  Dar-Ren Leu ,  Chandarani J. Mendon ,  Nilanjan Mukherjee ,  Vijoy Pandey

IPC: H04L12/50 ,  H04Q11/00

CPC classification number: H04L49/70 ,  H04L47/20 ,  H04L47/627 ,  H04L49/356

Abstract: A switching network includes an upper tier having a master switch and a lower tier including a plurality of lower tier entities. The master switch, which has a plurality of ports each coupled to a respective lower tier entity, implements on each of the ports a plurality of virtual ports each corresponding to a respective one of a plurality of remote physical interfaces (RPIs) at the lower tier entity coupled to that port. Data traffic communicated between the master switch and RPIs is queued within virtual ports that correspond to the RPIs with which the data traffic is communicated. The master switch applies data handling to the data traffic in accordance with a control policy based at least upon the virtual port in which the data traffic is queued, such that the master switch applies different policies to data traffic queued to two virtual ports on the same port of the master switch.

Abstract translation: 交换网络包括具有主交换机的上层和包括多个下层实体的较低层。 主交换机具有多个端口，每个端口各自耦合到相应的下层实体，在每个端口上实现多个虚拟端口，每个虚拟端口对应于下层的多个远程物理接口（RPI）中的相应一个 实体耦合到该端口。 在主交换机和RPI之间通信的数据业务在对应于数据业务与之通信的RPI的虚拟端口内排队。 主交换机至少基于数据流量排队的虚拟端口，根据控制策略对数据流量应用数据处理，使得主交换机将不同的策略应用于排队到同一个虚拟端口的数据业务 主交换机的端口

公开(公告)号：US08767529B2

公开(公告)日：2014-07-01

申请号：US13229891

申请日：2011-09-12

Applicant: Dayavanti G. Kamath ,  Keshav Kamble ,  Dar-Ren Leu ,  Vijoy Pandey ,  Nandakumar Peethambaram

Inventor： Dayavanti G. Kamath ,  Keshav Kamble ,  Dar-Ren Leu ,  Vijoy Pandey ,  Nandakumar Peethambaram

IPC: H04L1/00

CPC classification number: H04L12/4604 ,  H04L41/0668 ,  H04L49/354 ,  H04L49/557

Abstract: In a switching network, each of a plurality of lower tier entities is coupled to each of multiple master switches at an upper tier by a respective one of multiple links. At each of the multiple master switches, a plurality of virtual ports each corresponding to a respective one of a plurality of remote physical interfaces (RPIs) at the lower tier are implemented on each of a plurality of ports. Each of the plurality of lower tier entities implements a respective egress port mapping indicating which of its plurality of RPIs transmits egress data traffic through each of its multiple links to the multiple master switches. In response to failure of one of the multiple links coupling a particular lower tier entity to a particular master switch, the particular lower tier entity updates its egress port mapping to redirect egress data traffic to another of the multiple master switches without packet dropping.

公开(公告)号：US20130022050A1

公开(公告)日：2013-01-24

申请号：US13594970

申请日：2012-08-27

Applicant: DAR-REN LEU ,  DAYAVANTI G. KAMATH ,  KESHAV KAMBLE ,  JAYAKRISHNA KIDAMBI ,  DEEPAK KUMAR ,  VIJOY PANDEY

Inventor： DAR-REN LEU ,  DAYAVANTI G. KAMATH ,  KESHAV KAMBLE ,  JAYAKRISHNA KIDAMBI ,  DEEPAK KUMAR ,  VIJOY PANDEY

IPC: H04L12/56

CPC classification number: H04L49/356 ,  H04L49/70

Abstract: A switching network includes an upper tier including a master switch and a lower tier including a plurality of lower tier entities. The master switch includes a plurality of ports each coupled to a respective one of the plurality of lower tier entities. Each port includes a plurality of virtual ports each corresponding to a respective one of a plurality of remote physical interfaces (RPIs) at the lower tier entity coupled to that port. Each port also includes a receive interface that, responsive to data traffic from a particular lower tier entity, queues the data traffic to the virtual port that corresponds to the RPI on the particular lower tier entity that was the source of the data traffic. The master switch further includes a switch controller that switches data traffic from the virtual port to an egress port from which the data traffic is forwarded.

Abstract translation: 交换网络包括包括主交换机和包括多个下层实体的下层的上层。 主交换机包括多个端口，每个端口耦合到多个下层实体中的相应一个。 每个端口包括多个虚拟端口，每个虚拟端口对应于耦合到该端口的下层实体处的多个远程物理接口（RPI）中的相应一个。 每个端口还包括接收接口，响应于来自特定下层实体的数据流量，将数据流量排队到与作为数据流量源的特定低层实体上的RPI对应的虚拟端口。 主交换机还包括交换机控制器，该交换机控制器将数据业务从虚拟端口切换到从其转发数据业务的出口端口。

公开(公告)号：US20070140688A1

公开(公告)日：2007-06-21

申请号：US11314678

申请日：2005-12-21

Applicant: Jagdish Patel ,  Keshav Kamble ,  Gregory Foster

Inventor： Jagdish Patel ,  Keshav Kamble ,  Gregory Foster

IPC: H04B10/00

CPC classification number: H04B10/0791 ,  H04B10/077 ,  H04B10/07953 ,  H04B10/07955 ,  H04B2210/08 ,  H04L43/50

Abstract: The mode of operation in which a port is configured to operate may be selected so that the manner in which the port will interpret a loss of signal on a receive fiber may be specified. In an immediate mode, the port will interpret a loss of signal on a receive fiber as an indication of a fault on the transmit fiber (or interfaces associated with the transmit fiber) and will immediately shut its transmit interface down. In a multiple cycle detection mode, the port will not immediately interpret a loss of signal on a receive fiber as an indication of a fault on the transmit fiber, but rather will begin monitoring the receive fiber to look for a specified loss of signal pattern on the receive fiber. In this mode the port will interpret a repetitive loss of signal on the receive fiber as an indication of a fault on the transmit fiber. By providing a mode selector, the manner in which the ports are configured to operate may be adjusted individually, as a group, or globally.

Abstract translation: 可以选择端口被配置为操作的操作模式，使得可以指定端口将解释接收光纤上的信号丢失的方式。 在即时模式下，端口将解释接收光纤上的信号丢失，作为发送光纤（或与发送光纤相关的接口）发生故障的指示，并将立即关闭其发送接口。 在多周期检测模式下，端口不会立即将接收光纤上的信号损失解释为发送光纤上的故障指示，而是开始监视接收光纤以寻找指定的信号模式损耗 接收光纤。 在这种模式下，端口将解释接收光纤上重复的信号丢失，作为发送光纤故障的指示。 通过提供模式选择器，端口被配置为操作的方式可以单独地，作为一组或全局来调整。

公开(公告)号：US09065745B2

公开(公告)日：2015-06-23

申请号：US13267459

申请日：2011-10-06

Applicant: Nilanjan Mukherjee ,  Dayavanti G. Karnath ,  Keshav Kamble ,  Dar-Ren Leu ,  Vijoy Pandey

Inventor： Nilanjan Mukherjee ,  Dayavanti G. Karnath ,  Keshav Kamble ,  Dar-Ren Leu ,  Vijoy Pandey

IPC: H04L12/26 ,  H04L12/801 ,  H04L12/24 ,  H04L12/937 ,  H04L12/803 ,  H04L12/729

CPC classification number: H04L47/12 ,  H04L41/12 ,  H04L43/0882 ,  H04L43/12 ,  H04L45/125 ,  H04L47/122 ,  H04L49/254

Abstract: A switch for a switching network includes a plurality of ports for communicating data traffic and a switch controller that controls switching between the plurality of ports. The switch controller selects a forwarding path for the data traffic based on at least topological congestion information for the switching network. In a preferred embodiment, the topological congestion information includes sFlow topological congestion information and the switch controller includes an sFlow client that receives the sFlow topological congestion information from an sFlow controller in the switching network.

公开(公告)号：US08948003B2

公开(公告)日：2015-02-03

申请号：US13315443

申请日：2011-12-09

Applicant: Dayavanti G Kamath ,  Keshav Kamble ,  Dar-Ren Leu ,  Vijoy A Pandey

Inventor： Dayavanti G Kamath ,  Keshav Kamble ,  Dar-Ren Leu ,  Vijoy A Pandey

IPC: H04L12/24 ,  H04L12/721 ,  H04L12/709 ,  H04L12/703

CPC classification number: H04L41/0654 ,  H04L45/245 ,  H04L45/28 ,  H04L45/66 ,  Y02D50/30

Abstract: Each of first and second bridges of a data network having respective external links to an external node implement a network bridge component that forwards traffic inside the network and a virtual bridge component that forwards traffic outside of the network. A virtual bridge is formed including the virtual bridge components of the first and second bridges and an interswitch link (ISL) between the virtual bridge components of the first and second bridges. Data frames are redirected via the ISL in response to a link-down condition of one of the external links.

Abstract translation: 具有到外部节点的相应外部链路的数据网络的第一和第二桥接器实现转发网络内的业务的网桥组件，以及在网络外转发流量的虚拟桥组件。 形成虚拟桥，包括第一和第二桥的虚拟桥组件和第一和第二桥的虚拟桥组件之间的交叉连接（ISL）。 响应于其中一个外部链路的链路状态，数据帧通过ISL重定向。

公开(公告)号：US08717874B2

公开(公告)日：2014-05-06

申请号：US13595047

申请日：2012-08-27

Applicant: Nirapada Ghosh ,  Dayavanti G Kamath ,  Keshav Kamble ,  Dar-Ren Leu ,  Nilanjan Mukherjee ,  Vijoy Pandey

Inventor： Nirapada Ghosh ,  Dayavanti G Kamath ,  Keshav Kamble ,  Dar-Ren Leu ,  Nilanjan Mukherjee ,  Vijoy Pandey

IPC: G01R31/08

CPC classification number: H04L41/0816 ,  H04L41/082

Abstract: A switching network has a plurality of switches including at least a switch and a managing master switch. At the managing master switch, a first capability vector (CV) is received from the switch. The managing master switch determines whether the first CV is compatible with at least a second CV in a network membership data structure that records CVs of multiple switches in the switching network. In response to detecting an incompatibility, the managing master switch initiates an image update to an image of the switch. In response to a failure of the image update at the switch, the switch boots utilizing a mini-DC module that reestablishes communication between the switch with the managing master switch and retries the image update.

Abstract translation: 交换网络具有至少包括交换机和管理主交换机的多个交换机。 在管理主交换机上，从交换机接收到第一个能力向量（CV）。 管理主交换机确定第一个CV是否与记录交换网络中多个交换机的CV的网络成员资格数据结构中的至少第二个CV兼容。 响应于检测到不兼容性，管理主交换机启动对交换机的图像的图像更新。 为了响应交换机上的图像更新失败，开关使用小直流模块启动，该模块重新建立交换机与管理主交换机之间的通信，并重试映像更新。

公开(公告)号：US20130064067A1

公开(公告)日：2013-03-14

申请号：US13595405

申请日：2012-08-27

Applicant: DAYAVANTI G. KAMATH ,  KESHAV KAMBLE ,  DARREN LEU ,  VIJOY PANDEY ,  NANDAKUMAR PEETHAMBARAM

Inventor： DAYAVANTI G. KAMATH ,  KESHAV KAMBLE ,  DARREN LEU ,  VIJOY PANDEY ,  NANDAKUMAR PEETHAMBARAM

IPC: H04L12/24

CPC classification number: H04L12/4604 ,  H04L41/0668 ,  H04L49/354 ,  H04L49/557

Abstract: In a switching network, each of a plurality of lower tier entities is coupled to each of multiple master switches at an upper tier by a respective one of multiple links. At each of the multiple master switches, a plurality of virtual ports each corresponding to a respective one of a plurality of remote physical interfaces (RPIs) at the lower tier are implemented on each of a plurality of ports. Each of the plurality of lower tier entities implements a respective egress port mapping indicating which of its plurality of RPIs transmits egress data traffic through each of its multiple links to the multiple master switches. In response to failure of one of the multiple links coupling a particular lower tier entity to a particular master switch, the particular lower tier entity updates its egress port mapping to redirect egress data traffic to another of the multiple master switches without packet dropping.

公开(公告)号：US20120320739A1

公开(公告)日：2012-12-20

申请号：US13315443

申请日：2011-12-09

Applicant: Dayavanti G. Kamath ,  Keshav Kamble ,  Dar-Ren Leu ,  Vijoy A. Pandey

Inventor： Dayavanti G. Kamath ,  Keshav Kamble ,  Dar-Ren Leu ,  Vijoy A. Pandey

IPC: H04L12/26

CPC classification number: H04L41/0654 ,  H04L45/245 ,  H04L45/28 ,  H04L45/66 ,  Y02D50/30

Abstract: Each of first and second bridges of a data network having respective external links to an external node implement a network bridge component that forwards traffic inside the network and a virtual bridge component that forwards traffic outside of the network. A virtual bridge is formed including the virtual bridge components of the first and second bridges and an interswitch link (ISL) between the virtual bridge components of the first and second bridges. Data frames are redirected via the ISL in response to a link-down condition of one of the external links.

Abstract translation: 具有到外部节点的相应外部链路的数据网络的第一和第二桥接器实现转发网络内的业务的网桥组件，以及在网络外转发流量的虚拟桥组件。 形成虚拟桥，包括第一和第二桥的虚拟桥组件和第一和第二桥的虚拟桥组件之间的交叉连接（ISL）。 响应于其中一个外部链路的链路状态，数据帧通过ISL重定向。

公开(公告)号：US20120287786A1

公开(公告)日：2012-11-15

申请号：US13107893

申请日：2011-05-14

Applicant: Keshav Kamble ,  Dayavanti G. Kamath ,  Jayakrishna Kidambi ,  Dar-ren Leu ,  Chandarani J. Mendon ,  Vijoy Pandey

Inventor： Keshav Kamble ,  Dayavanti G. Kamath ,  Jayakrishna Kidambi ,  Dar-ren Leu ,  Chandarani J. Mendon ,  Vijoy Pandey

IPC: H04L12/26

CPC classification number: H04L49/70 ,  H04L49/201 ,  H04L49/205

Abstract: A switching network includes an upper tier and a lower tier including a plurality of lower tier entities. A master switch in the upper tier, which has a plurality of ports each coupled to a respective lower tier entity, implements on each of the ports a plurality of virtual ports each corresponding to a respective one of a plurality of remote physical interfaces (RPIs) at the lower tier entity coupled to that port. Data traffic communicated between the master switch and RPIs is queued within virtual ports that correspond to the RPIs on lower tier entities with which the data traffic is communicated. The master switch enforces priority-based flow control (PFC) on data traffic of a given virtual port by transmitting, to a lower tier entity on which a corresponding RPI resides, a PFC data frame specifying priorities for at least two different classes of data traffic communicated by the particular RPI.

Abstract translation: 交换网络包括包括多个下层实体的上层和下层。 上层的主交换机具有多个端口，每个端口各自耦合到相应的下层实体，在每个端口上实现多个虚拟端口，每个虚拟端口对应于多个远程物理接口（RPI）中的相应的一个， 在与该端口相连的较低层实体上。 在主交换机和RPI之间通信的数据业务在虚拟端口内排队，对应于数据业务与之通信的较低层实体上的RPI。 主交换机通过向对应的RPI所驻留的较低层实体发送指定至少两个不同类别的数据业务的优先级的PFC数据帧来对给定虚拟端口的数据流量执行基于优先级的流控制（PFC） 由特定RPI传达。