公开(公告)号：US20140254590A1

公开(公告)日：2014-09-11

申请号：US13787453

申请日：2013-03-06

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Yibin Yang ,  Chiajen Tsai ,  Liqin Dong ,  Shyam Kapadia

IPC: H04L12/18

CPC classification number: H04L12/18 ,  H04L12/1886 ,  H04L45/16

Abstract: A method is provided in one example embodiment and includes determining a route target (“RT”) membership for a network element; determining at least one attribute for the RT membership; and advertising the RT membership with the at least one attribute to other network elements. The at least one attribute may include an RT membership type attribute for indicating whether the RT membership is due to a local virtual network connection, transit support, or both. Additionally or alternatively, the at least one attribute may include a distribution tree binding attribute for indicating a distribution tree for the RT membership.

Abstract translation: 在一个示例实施例中提供了一种方法，并且包括确定网络元件的路由目标（“RT”）成员资格; 确定RT成员资格的至少一个属性; 以及将具有至少一个属性的RT成员资格广告到其他网络元件。 所述至少一个属性可以包括用于指示RT成员资格是由于本地虚拟网络连接，中转支持还是两者的RT成员资格类型属性。 另外或替代地，所述至少一个属性可以包括用于指示RT成员资格的分发树的分发树绑定属性。

公开(公告)号：US20180048716A1

公开(公告)日：2018-02-15

申请号：US15433917

申请日：2017-02-15

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Muthumayan Madhayyan ,  Ganesh Sundaram ,  Chiajen Tsai ,  Larry T. Chang

IPC: H04L29/08 ,  H04L12/26 ,  H04L29/12

CPC classification number: H04L61/2015 ,  G06F9/455 ,  G06F9/45558 ,  G06F2009/45587 ,  G06F2009/45595 ,  H04L41/0806 ,  H04L61/2007 ,  H04L67/10 ,  H04L67/16

Abstract: Systems and methods for triggering service activation include starting a vCPE instance in response to a request for a service, instantiating a service container for the requested service and starting the service in the service container, installing a fast path entry for the service container in a local bridge table, detecting an idle timeout of the service and labeling the local bridge table entry for the corresponding service container as inactive, notifying a cloud services manager that the service container is inactive, and removing the service container.

公开(公告)号：US09503325B2

公开(公告)日：2016-11-22

申请号：US14080916

申请日：2013-11-15

Applicant: Cisco Technology, Inc.

Inventor： Vipin Jain ,  Suran Saminda de Silva ,  Chiajen Tsai ,  Debashis Patnala Rao ,  Yibin Yang ,  Palathingal Frank ,  Shyam Kapadia ,  Vijay Gopal Krishnan

IPC: H04L12/24 ,  H04L12/46

CPC classification number: H04L41/0816 ,  H04L12/467 ,  H04L12/4675

Abstract: A leaf switch of a switch fabric includes multiple ports to connect with respective ones of multiple servers. Virtual local area networks (VLANs) are configured on the leaf switch. Dynamic creation of virtual ports is enabled on the leaf switch for at least one of the VLANs on an as needed basis. The leaf switch receives from a particular server connected to a corresponding one of the ports a notification message that a virtual machine is hosted on the particular server. Responsive to the notification message, the leaf switch dynamically creates a virtual port that associates the corresponding one of the ports with the at least one of the VLANs.

Abstract translation: 交换结构的叶片交换机包括多个端口，用于与多个服务器中的相应服务器进行连接。 虚拟局域网（VLAN）在叶片交换机上配置。 根据需要，在叶片交换机上为至少一个VLAN启用动态创建虚拟端口。 叶片交换机从连接到对应的一个端口的特定服务器接收虚拟机托管在特定服务器上的通知消息。 响应于通知消息，叶片交换机动态地创建将对应的一个端口与至少一个VLAN相关联的虚拟端口。

公开(公告)号：US09203749B2

公开(公告)日：2015-12-01

申请号：US13904065

申请日：2013-05-29

Applicant: Cisco Technology, Inc.

Inventor： Yibin Yang ,  Chiajen Tsai ,  Liqin Dong

IPC: H04L12/721 ,  H04L12/753

CPC classification number: H04L45/66 ,  H04L45/48

Abstract: An example method for calculating a constrained distribution tree in a TRILL network including a plurality of VL and FGL RBridges can include learning an FGL multi-destination frame filtering capability of at least one of the FGL RBridges in the TRILL network, constructing a sub-graph including the FGL RBridges and associated links and calculating at least one sub-tree based on the sub-graph. The method can also include constructing a graph including VL RBridges, the FGL RBridges and associated links by adding links between the VL RBridges and the FGL RBridges. The FGL RBridge to which the VL RBridge is linked can have sufficient FGL multi-destination frame filtering capability. Further, the method can include calculating a constrained distribution tree based on the graph by treating the sub-tree as a logical node.

Abstract translation: 用于计算包括多个VL和FGL RBridge的TRILL网络中的约束分布树的示例方法可以包括学习TRILL网络中的至少一个FGL RBridge的FGL多目的地帧过滤能力，构建子图 包括FGL RBridge和相关联的链接，并且基于子图计算至少一个子树。 该方法还可以包括通过在VL RBridge和FGL RBridge之间添加链接来构建包括VL RBridge，FGL RBridge和相关链接的图。 VL RBridge链接到的FGL RBridge可以具有足够的FGL多目标帧过滤功能。 此外，该方法可以包括通过将子树视为逻辑节点来基于该图来计算约束分布树。

公开(公告)号：US20150071286A1

公开(公告)日：2015-03-12

申请号：US14020791

申请日：2013-09-07

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Suran Saminda de Silva ,  Chiajen Tsai ,  Liqin Dong ,  Yibin Yang

IPC: H04L12/741

CPC classification number: H04L45/74 ,  H04L12/4641 ,  H04L45/54 ,  H04L45/586

Abstract: A method is provided in one example and includes receiving, at a receiving node, a packet that comprises information indicative of an internet protocol address and a segmentation identification, selecting a virtual routing and forwarding table corresponding with the segmentation identification, identifying a destination node based, at least in part, on the internet protocol address and the virtual routing and forwarding table, and transmitting the packet to the destination node.

Abstract translation: 在一个示例中提供了一种方法，并且包括在接收节点处接收包括指示因特网协议地址和分段标识的信息的分组，选择与分段标识相对应的虚拟路由和转发表，基于目的节点识别 ，至少部分地在互联网协议地址和虚拟路由和转发表上，并将该分组发送到目的地节点。

公开(公告)号：US20140355475A1

公开(公告)日：2014-12-04

申请号：US13904065

申请日：2013-05-29

Applicant: Cisco Technology, Inc.

Inventor： Yibin Yang ,  Chiajen Tsai ,  Liqin Dong

IPC: H04L12/721 ,  H04L12/751

CPC classification number: H04L45/66 ,  H04L45/48

Abstract: An example method for calculating a constrained distribution tree in a TRILL network including a plurality of VL and FGL RBridges can include learning an FGL multi-destination frame filtering capability of at least one of the FGL RBridges in the TRILL network, constructing a sub-graph including the FGL RBridges and associated links and calculating at least one sub-tree based on the sub-graph. The method can also include constructing a graph including VL RBridges, the FGL RBridges and associated links by adding links between the VL RBridges and the FGL RBridges. The FGL RBridge to which the VL RBridge is linked can have sufficient FGL multi-destination frame filtering capability. Further, the method can include calculating a constrained distribution tree based on the graph by treating the sub-tree as a logical node.

Abstract translation: 用于计算包括多个VL和FGL RBridge的TRILL网络中的约束分布树的示例方法可以包括学习TRILL网络中的至少一个FGL RBridge的FGL多目的地帧过滤能力，构建子图 包括FGL RBridge和相关联的链接，并且基于子图计算至少一个子树。 该方法还可以包括通过在VL RBridge和FGL RBridge之间添加链接来构建包括VL RBridge，FGL RBridge和相关链接的图。 VL RBridge链接到的FGL RBridge可以具有足够的FGL多目标帧过滤功能。 此外，该方法可以包括通过将子树视为逻辑节点来基于该图来计算约束分布树。

公开(公告)号：US20140348166A1

公开(公告)日：2014-11-27

申请号：US13898572

申请日：2013-05-21

Applicant: Cisco Technology, Inc.

Inventor： Yibin Yang ,  Chiajen Tsai ,  Liqin Dong ,  Shyam Kapadia

IPC: H04L12/721

CPC classification number: H04L45/124 ,  H04L12/4633 ,  H04L12/4641 ,  H04L45/12 ,  H04L45/66

Abstract: An example method for determining an optimal forwarding path across a network having VxLAN gateways configured to implement both FGL networking and VxLAN capabilities can include learning RBridge nicknames associated with the VxLAN gateways in the network. Additionally, the method can include determining a path cost over the FGL network between each of the VxLAN gateways and a source node and a path cost over the VxLAN between each of the VxLAN gateways and a destination node. Further, the method can include determining an encapsulation overhead metric associated with the VxLAN and selecting one of the VxLAN gateways as an optimal VxLAN gateway. The selection can be based on the computed path costs over the FGL network and the VxLAN and the encapsulation overhead metric.

Abstract translation: 用于确定具有配置为实现FGL组网和VxLAN能力的VxLAN网关的网络的最佳转发路径的示例性方法可以包括学习与网络中的VxLAN网关相关联的RBridge昵称。 另外，该方法可以包括确定每个VxLAN网关和源节点之间的FGL网络上的路径开销以及每个VxLAN网关与目的地节点之间的VxLAN上的路径开销。 此外，该方法可以包括确定与VxLAN相关联的封装开销度量并且选择VxLAN网关之一作为最佳VxLAN网关。 该选择可以基于计算出的在FGL网络和VxLAN上的路径开销以及封装开销度量。

公开(公告)号：US20140344426A1

公开(公告)日：2014-11-20

申请号：US14449923

申请日：2014-08-01

Applicant: Cisco Technology, Inc.

Inventor： Chiajen Tsai ,  Norman Finn ,  Yibin Yang ,  Nagabhushan K. Channabasappa ,  Debashis Patnala Rao

IPC: H04L12/24

CPC classification number: H04L41/0816 ,  H04L12/4687 ,  H04L12/4695 ,  H04L41/12 ,  H04L45/66

Abstract: In one embodiment, a method includes detecting a change in network topology and broadcasting a transient unconditional unpruning message to multiple nodes in the network. The message is configured to instruct each of the nodes receiving the message to start a phase timer in response to the broadcast message; unprune its operational ports; and, upon expiration of the phase timer, prune its ports in accordance with the results of a pruning protocol.

Abstract translation: 在一个实施例中，一种方法包括检测网络拓扑的变化并且向网络中的多个节点广播瞬时无条件的去运行消息。 消息被配置为响应于广播消息指示接收消息的每个节点开始相位定时器; 解除其运营端口; 并且在相位计时器到期后，根据修剪协议的结果修剪其端口。

公开(公告)号：US20140092780A1

公开(公告)日：2014-04-03

申请号：US13644100

申请日：2012-10-03

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Yibin Yang ,  Chiajen Tsai ,  Patnala Debashis Rao ,  Yuchen Zhou

IPC: H04L12/28

CPC classification number: H04L12/462 ,  H04L45/48 ,  H04L45/66

Abstract: Methods and apparatuses for rapid TRILL convergence are disclosed herein. The methods can be implemented in a network including a plurality of RBridges or in a cloud network environment including a plurality of cloud switch domains. An example method for rapid TRILL convergence can include: Executing a spanning tree protocol (STP) for network topology in a network; and executing a Hello protocol for control and forwarding at the RBridge. The Hello protocol can be configured to elect a designated RBridge and assign an appointed forwarder. The method can also include assigning a transient appointed forwarder during a period of time between convergence of the STP and convergence of the Hello protocol. The transient appointed forwarder can be configured to forward frames in the network during the period of time between convergence of the STP and convergence of the Hello protocol.

Abstract translation: 本文公开了用于快速TRILL收敛的方法和装置。 该方法可以在包括多个RBridge的网络中或在包括多个云交换机域的云网络环境中实现。 快速TRILL融合的示例方法可以包括：对网络中的网络拓扑执行生成树协议（STP）; 并在RBridge执行Hello协议进行控制和转发。 Hello协议可以配置为选择指定的RBridge并分配指定的转发器。 该方法还可以包括在STP的收敛和Hello协议的收敛之间的一段时间内分配临时指定的转发器。 临时指定的转发器可以配置为在STP收敛和Hello协议收敛之间的时间段内转发网络中的帧。