公开(公告)号：US20160127192A1

公开(公告)日：2016-05-05

申请号：US14533975

申请日：2014-11-05

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Stewart Frederick Bryant ,  Giles Douglas Yorke Heron ,  Christian Cassar

IPC: H04L12/24 ,  H04L12/801 ,  H04L12/26

CPC classification number: H04L41/12 ,  H04L12/42 ,  H04L43/50 ,  H04L45/021 ,  H04L45/026 ,  H04L45/123 ,  H04L45/18 ,  H04L45/28

Abstract: In one embodiment, a method includes identifying a change in network topology at a network device, transmitting a test packet from the network device to determine if an adjacent network device located in a backup path has converged following the network topology change, and updating a forwarding information base at the network device in response to the network topology change if a response to the test packet indicates that the adjacent network device has converged. An apparatus and logic are also disclosed herein.

Abstract translation: 在一个实施例中，一种方法包括识别网络设备上的网络拓扑的变化，从网络设备发送测试分组，以确定位于备份路径中的相邻网络设备是否在网络拓扑变化之后已经收敛，并且更新转发 如果对测试分组的响应指示相邻网络设备已经收敛，则在网络设备处的信息库响应于网络拓扑变化。 本文还公开了一种装置和逻辑。

公开(公告)号：US20150029849A1

公开(公告)日：2015-01-29

申请号：US13950452

申请日：2013-07-25

Applicant: Cisco Technology, Inc.

Inventor： Dan Frost ,  Stewart Frederick Bryant

IPC: H04L12/803 ,  H04L12/723

CPC classification number: H04L47/125 ,  H04L45/50

Abstract: In one embodiment, a receiver device determines that it accepts flow entropy, and accordingly determines a set of entropy labels the receiver device is accepting. After transmitting the set of entropy labels from the receiver device to one or more sender devices, the receiver device may then receive packets from the one or more sender devices with selected particular entropy labels from the set of entropy labels. In another embodiment, a sender device receives from a receiver device a set of entropy labels the receiver device is accepting. As such, when determining a packet to forward to the receiver device with flow entropy, the sender device may select a particular entropy label from the set of entropy labels for that receiver device, and transmits the packet device to the receiver device with the selected particular entropy label.

Abstract translation: 在一个实施例中，接收机设备确定其接受流熵，并因此确定接收机设备接受的一组熵标签。 在从接收机设备将一组熵标签发送到一个或多个发送器设备之后，接收机设备然后可以从该组熵标签中接收来自一个或多个发送器设备的分组，其中具有选定的特定熵标签。 在另一个实施例中，发送器设备从接收机设备接收接收机设备接受的一组熵标签。 因此，当使用流熵确定要向接收机设备转发的分组时，发送器设备可以从该接收机设备的熵标签组中选择特定的熵标签，并且将该分组设备发送到具有所选择的特定 熵标签。

公开(公告)号：US10439880B2

公开(公告)日：2019-10-08

申请号：US14533975

申请日：2014-11-05

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Stewart Frederick Bryant ,  Giles Douglas Yorke Heron ,  Christian Cassar

IPC: G06F15/173 ,  H04L12/24 ,  H04L12/26 ,  H04L12/42 ,  H04L12/755 ,  H04L12/751 ,  H04L12/721 ,  H04L12/705 ,  H04L12/703

Abstract: In one embodiment, a method includes identifying a change in network topology at a network device, transmitting a test packet from the network device to determine if an adjacent network device located in a backup path has converged following the network topology change, and updating a forwarding information base at the network device in response to the network topology change if a response to the test packet indicates that the adjacent network device has converged. An apparatus and logic are also disclosed herein.

公开(公告)号：US09967191B2

公开(公告)日：2018-05-08

申请号：US13950452

申请日：2013-07-25

Applicant: Cisco Technology, Inc.

Inventor： Dan Frost ,  Stewart Frederick Bryant

IPC: G01R31/08 ,  H04L12/803 ,  H04L12/723

CPC classification number: H04L47/125 ,  H04L45/50

Abstract: In one embodiment, a receiver device determines that it accepts flow entropy, and accordingly determines a set of entropy labels the receiver device is accepting. After transmitting the set of entropy labels from the receiver device to one or more sender devices, the receiver device may then receive packets from the one or more sender devices with selected particular entropy labels from the set of entropy labels. In another embodiment, a sender device receives from a receiver device a set of entropy labels the receiver device is accepting. As such, when determining a packet to forward to the receiver device with flow entropy, the sender device may select a particular entropy label from the set of entropy labels for that receiver device, and transmits the packet device to the receiver device with the selected particular entropy label.

公开(公告)号：US09467367B2

公开(公告)日：2016-10-11

申请号：US13835190

申请日：2013-03-15

Applicant: Cisco Technology, Inc.

Inventor： Stewart Frederick Bryant ,  Daniel C. Frost ,  Neil Jarvis ,  George L. Swallow

IPC: H04L12/723

CPC classification number: H04L45/50

Abstract: In an embodiment, a method comprises: receiving a data communications packet comprising one or more labels in a label stack; determining whether a table identifier is present in the label stack. In response to determining that the table identifier is present in the label stack: based, at least in part, on the table identifier, a label table is determined; a next hop for the data communications packet is determined by performing a next-hop lookup in the label table using at least one of the one or more labels; and the data communications packet is forwarded to the next hop. In an embodiment, the method is performed by one or more computing devices.

Abstract translation: 在一个实施例中，一种方法包括：在标签堆栈中接收包括一个或多个标签的数据通信包; 确定标签堆栈中是否存在表标识符。 响应于确定表标识符存在于标签堆栈中：至少部分地基于表标识符，确定标签表; 通过使用一个或多个标签中的至少一个来执行标签表中的下一跳查找来确定数据通信分组的下一跳; 并将数据通信包转发到下一跳。 在一个实施例中，该方法由一个或多个计算设备执行。

公开(公告)号：US20140269714A1

公开(公告)日：2014-09-18

申请号：US13835190

申请日：2013-03-15

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Stewart Frederick Bryant ,  Daniel C. Frost ,  Neil Jarvis ,  George L. Swallow

IPC: H04L12/723

CPC classification number: H04L45/50

Abstract: In an embodiment, a method comprises: receiving a data communications packet comprising one or more labels in a label stack; determining whether a table identifier is present in the label stack. In response to determining that the table identifier is present in the label stack: based, at least in part, on the table identifier, a label table is determined; a next hop for the data communications packet is determined by performing a next-hop lookup in the label table using at least one of the one or more labels; and the data communications packet is forwarded to the next hop. In an embodiment, the method is performed by one or more computing devices.

Abstract translation: 在一个实施例中，一种方法包括：在标签堆栈中接收包括一个或多个标签的数据通信包; 确定标签堆栈中是否存在表标识符。 响应于确定表标识符存在于标签堆栈中：至少部分地基于表标识符，确定标签表; 通过使用一个或多个标签中的至少一个来执行标签表中的下一跳查找来确定数据通信分组的下一跳; 并将数据通信包转发到下一跳。 在一个实施例中，该方法由一个或多个计算设备执行。