公开(公告)号：US20180191615A1

公开(公告)日：2018-07-05

申请号：US15910804

申请日：2018-03-02

Applicant: CISCO TECHNOLOGY, INC.

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

IPC: H04L12/741 ,  H04L12/713 ,  H04L12/46

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

Abstract: Packet transmission techniques are disclosed herein. An exemplary method includes receiving a packet that identifies an internet protocol (IP) address assigned to more than one destination node; selecting a virtual routing and forwarding table based, at least in part, on a segmentation identification in the packet; identifying a designated destination node in the packet based, at least in part, on the selected virtual routing and forwarding table; and transmitting the packet to the designated destination node.

公开(公告)号：US09203738B2

公开(公告)日：2015-12-01

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：US20140101336A1

公开(公告)日：2014-04-10

申请号：US13647909

申请日：2012-10-09

Applicant: Cisco Technology, Inc.

Inventor： Yibin Yang ,  Chiajen Tsai ,  Liqin Dong

IPC: G06F15/173

CPC classification number: H04L45/02 ,  H04L45/04

Abstract: A method is provided in one example embodiment and includes determining whether a first network element with which a second network element is attempting to establish an adjacency is a client type element. If the first network element is determined to be a client type element, the method further includes determining whether the first and second network elements are in the same network area. If the first network element is a client type element and the first and second network elements are determined to be in the same network area, the adjacency is established. Subsequent to the establishing, a determination is made whether the first network element includes an inter-area forwarder (IAF).

Abstract translation: 在一个示例实施例中提供了一种方法，并且包括确定第二网络元件正在尝试建立邻接的第一网络元件是否是客户端类型元件。 如果第一网络元素被确定为客户端类型元素，则该方法还包括确定第一和第二网络元件是否在相同的网络区域中。 如果第一网络元素是客户端类型元素，并且第一和第二网络元素被确定为在相同的网络区域中，则建立邻接关系。 在建立之后，确定第一网络元件是否包括区域间转发器（IAF）。

公开(公告)号：US10476839B2

公开(公告)日：2019-11-12

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: G06F15/173 ,  H04L29/12 ,  H04L12/24 ,  H04L29/08 ,  G06F9/455

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：US20160204986A1

公开(公告)日：2016-07-14

申请号：US15074906

申请日：2016-03-18

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Chiajen Tsai ,  Yibin Yang ,  Patnala Debashis Rao ,  Manish Chandra Agrawal ,  Rick Chang

IPC: H04L12/24 ,  H04H20/53 ,  G06F9/455 ,  H04L12/46

CPC classification number: H04L41/0823 ,  G06F9/45558 ,  G06F2009/45595 ,  H04H20/53 ,  H04L12/4641 ,  H04L12/467 ,  H04L12/4675

Abstract: An example method for facilitating multiple mobility domains with VLAN translation in a multi-tenant network environment is provided and includes detecting attachment of a first virtual machine on a first port and a second virtual machine on a second port of a network element, the first port and the second port being configured with a first mobility domain and a second mobility domain, respectively, and the first and second virtual machines being configured on a same original VLAN, determining whether the original VLAN falls within a pre-configured VLAN range, translating the original VLAN to a first VLAN on the first port corresponding to the first mobility domain and to a second VLAN on the second port corresponding to the second mobility domain, and segregating traffic on the original VLAN into the first VLAN and the second VLAN according to the respective mobility domains for per-port VLAN significance.

公开(公告)号：US20160112314A1

公开(公告)日：2016-04-21

申请号：US14977681

申请日：2015-12-22

Applicant: CISCO TECHNOLOGY, INC.

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

IPC: H04L12/741 ,  H04L12/46

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

Abstract: Packet transmission techniques are disclosed herein. An exemplary method includes receiving a packet that identifies an internet protocol (IP) address assigned to more than one destination node; selecting a virtual routing and forwarding table based, at least in part, on a segmentation identification in the packet; identifying a designated destination node in the packet based, at least in part, on the selected virtual routing and forwarding table; and transmitting the packet to the designated destination node.

Abstract translation: 本文公开了分组传输技术。 一种示例性方法包括接收标识分配给多于一个目的地节点的因特网协议（IP）地址的分组; 至少部分地基于分组中的分段识别来选择虚拟路由和转发表; 至少部分地基于所选择的虚拟路由和转发表来识别分组中的指定目的地节点; 并将该分组发送到指定的目的地节点。

公开(公告)号：US20160080247A1

公开(公告)日：2016-03-17

申请号：US14947134

申请日：2015-11-20

Applicant: Cisco Technology, Inc.

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

IPC: H04L12/721 ,  H04L12/46

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 gateways configured to implement a plurality of logical networking protocols can include determining a path cost over a first logical network between each of the gateways and a source node and a path cost over the a second logical network between each of the gateways and a destination node. Additionally, the method can include determining an encapsulation cost difference between switching packets over the first and second logical networks. The method can also include determining an encapsulation overhead metric associated with one of the first or second logical networks, and weighting one of the first or second path cost by the encapsulation overhead metric. Further, the method can include selecting one of the gateways as an optimal gateway. The selection can be based on the computed path costs.

Abstract translation: 用于确定跨越具有被配置为实现多个逻辑网络协议的网关的网络的最佳转发路径的示例性方法可以包括：确定在每个网关与源节点之间的第一逻辑网络上的路径开销，以及在 每个网关和目的地节点之间的第二逻辑网络。 另外，该方法可以包括确定通过第一和第二逻辑网络切换分组之间的封装成本差异。 该方法还可以包括确定与第一或第二逻辑网络之一相关联的封装开销度量，以及通过封装开销度量来加权第一或第二路径开销中的一个。 此外，该方法可以包括选择网关之一作为最佳网关。 选择可以基于计算出的路径成本。

公开(公告)号：US09264351B2

公开(公告)日：2016-02-16

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: H04L12/28 ,  H04L12/713 ,  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：US20160020921A1

公开(公告)日：2016-01-21

申请号：US14334413

申请日：2014-07-17

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Chiajen Tsai ,  Yibin Yang ,  Patnala Debashis Rao ,  Manish Chandra Agrawal ,  Rick Chang

IPC: H04L12/46

CPC classification number: H04L41/0823 ,  G06F9/45558 ,  G06F2009/45595 ,  H04H20/53 ,  H04L12/4641 ,  H04L12/467 ,  H04L12/4675

Abstract: An example method for facilitating multiple mobility domains with VLAN translation in a multi-tenant network environment is provided and includes detecting attachment of a first virtual machine on a first port and a second virtual machine on a second port of a network element, the first port and the second port being configured with a first mobility domain and a second mobility domain, respectively, and the first and second virtual machines being configured on a same original VLAN, determining whether the original VLAN falls within a pre-configured VLAN range, translating the original VLAN to a first VLAN on the first port corresponding to the first mobility domain and to a second VLAN on the second port corresponding to the second mobility domain, and segregating traffic on the original VLAN into the first VLAN and the second VLAN according to the respective mobility domains for per-port VLAN significance.

Abstract translation: 提供了一种用于在多租户网络环境中促进具有VLAN转换的多个移动性域的示例性方法，并且包括检测第一虚拟机在网元的第二端口上的第一端口和第二虚拟机上的附件，第一端口 并且第二端口分别被配置有第一移动性域和第二移动性域，并且第一和第二虚拟机被配置在相同的原始VLAN上，确定原始VLAN是否落在预配置的VLAN范围内，翻译 原始VLAN到对应于第一移动性域的第一端口上的第一VLAN和对应于第二移动性域的第二端口上的第二VLAN，并且根据原始VLAN将原始VLAN上的流量分为第一VLAN和第二VLAN 各端口VLAN的移动性域。

公开(公告)号：US20140258485A1

公开(公告)日：2014-09-11

申请号：US13788602

申请日：2013-03-07

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Yibin Yang ,  Liqin Dong ,  Chiajen Tsai

IPC: H04L12/24

CPC classification number: H04L41/12 ,  H04L45/02 ,  H04L45/04 ,  H04L45/16 ,  H04L45/28 ,  H04L45/48

Abstract: A method is provided in one example embodiment and includes establishing at least one fixed topology distribution tree in a network, where the fixed topology distribution tree comprises one root node and a plurality of leaf nodes connected to the root node; maintaining at the root node an indication of multicast group interests advertised by the leaf nodes; and pruning traffic at the root node based on the advertised multicast group interests of the leaf nodes. In one embodiment, the root node is a spine switch and each of the leaf nodes is a leaf switch and each of the leaf nodes is connected to the root node by a single hop.

Abstract translation: 在一个示例实施例中提供了一种方法，并且包括在网络中建立至少一个固定拓扑分布树，其中固定拓扑分布树包括连接到根节点的一个根节点和多个叶节点; 在根节点维护叶节点广播的组播组兴趣的指示; 并根据叶节点的广播组播组利益修剪根节点的流量。 在一个实施例中，根节点是脊交换机，并且每个叶节点是叶交换机，并且每个叶节点通过单跳连接到根节点。