公开(公告)号：US20190110214A1

公开(公告)日：2019-04-11

申请号：US15728559

申请日：2017-10-10

Applicant: Cisco Technology, Inc.

Inventor： Naiming Shen ,  Jun Zhuang ,  Laxmikantha Reddy Ponnuru ,  Veeranjaneyulu Pendyala

IPC: H04W24/04 ,  H04L12/931 ,  H04L12/24 ,  H04L29/12 ,  H04W76/02

CPC classification number: H04W24/04 ,  H04L12/462 ,  H04L12/4633 ,  H04L41/0686 ,  H04L45/50 ,  H04L45/66 ,  H04L49/65 ,  H04L61/103 ,  H04L61/6022 ,  H04W40/24 ,  H04W76/12 ,  H04W76/32

Abstract: Disclosed is a method that includes receiving, at a layer 2 switch, a first message to establish a fast re-switch tunnel between the layer 2 switch and a standby wireless controller and receiving, at the layer 2 switch, a second message to trigger use of the fast re-switch tunnel. The switch receives data and forwards the data to the standby wireless controller through the fast re-switch tunnel. Once MAC tables are updated for the standby wireless controller, the fast re-switch tunnel can be torn down.

公开(公告)号：US20180041360A1

公开(公告)日：2018-02-08

申请号：US15226734

申请日：2016-08-02

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Naiming Shen ,  Stig I. Venaas ,  Ashutosh Gupta

IPC: H04L12/44 ,  H04L12/743 ,  H04L12/18

Abstract: Aspects of the embodiments are directed to systems, methods, and network elements executing instructions stored thereon. Aspects are directed to, for each spine node connected to a leaf node network element, identifying a spine router identifier, identifying a multicast group address, computing a plurality of hash values based on a hash function using the spine router identifier and the multicast group address, identifying a root spine node based on a highest hash value from the plurality of hash values; and transmitting an IS-IS message to root spine node indicating election of spine node as the root spine node.

公开(公告)号：US20180013584A1

公开(公告)日：2018-01-11

申请号：US15696568

申请日：2017-09-06

Applicant: Cisco Technology, Inc.

Inventor： Naiming Shen ,  Jun Zhuang ,  Enke Chen

IPC: H04L12/46 ,  H04L12/701 ,  H04L29/12

CPC classification number: H04L12/4633 ,  H04L12/4675 ,  H04L45/00 ,  H04L61/2514 ,  H04L61/2592 ,  H04L61/6068

Abstract: A method is provided in one example embodiment and includes configuring on a network element a first tunnel from the network element to a first network, wherein the configuring comprises mapping a nexthop address of the local network element to a transport address of the tunnel on the network to create a first nexthop-to-transport mapping for the network element; and advertising the first nexthop-to-transport mapping along with routing information for the network element to remote network elements.

公开(公告)号：US20170264713A1

公开(公告)日：2017-09-14

申请号：US15606267

申请日：2017-05-26

Applicant: Cisco Technology, Inc.

Inventor： Naiming Shen ,  Keyur P. Patel ,  Carlos M. Pignataro ,  James N. Guichard

IPC: H04L29/08 ,  H04L12/721 ,  H04L12/24

CPC classification number: H04L67/327 ,  H04L41/0806 ,  H04L41/5054 ,  H04L41/5058 ,  H04L45/306 ,  H04L45/44

Abstract: A system comprising a plurality of service nodes, a controller and a network device in communication with the controller. Each of the plurality of service nodes is configured to support one or more service functions to establish a service function chain that includes a plurality of service functions to be performed by routing traffic among the plurality of service nodes. The controller is configured to generate provisioning information for the service function chain. The provisioning information includes at least one condition upon which a service function reclassification or branching operation is to be performed by at least one service node. The network device is in communication with the controller, and is configured to distribute the provisioning information for the service function chain to the plurality of service nodes using a distributed routing protocol.

公开(公告)号：US20180302289A1

公开(公告)日：2018-10-18

申请号：US15487978

申请日：2017-04-14

Applicant: Cisco Technology, Inc.

Inventor： Naiming Shen ,  Zach Cherian ,  Nag Avadhanam ,  Swapna Yelamanchi

IPC: H04L12/24 ,  H04L29/08 ,  H04L12/721 ,  H04L29/12

CPC classification number: H04L41/12 ,  H04L45/26 ,  H04L61/2015

Abstract: An apparatus controls discovery of nodes for a network fabric and accommodates communication among the nodes. The apparatus may be a controller operating as a first node on a network and having a processor connected to memory. The controller is communicatively connected to a second node that has a native network protocol. The memory stores computer readable software instructions that, when implemented by the processor, cause the controller to send a discovery data packet to the second node in the second node's native network protocol. The discovery data packet advertises controller status information to the second node for use in establishing a communications link between the controller and the second node in the network fabric.

公开(公告)号：US09825777B2

公开(公告)日：2017-11-21

申请号：US14747831

申请日：2015-06-23

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Naiming Shen ,  Jun Zhuang ,  Enke Chen

IPC: H04L12/28 ,  H04L12/46 ,  H04L12/701 ,  H04L29/12

CPC classification number: H04L12/4633 ,  H04L12/4675 ,  H04L45/00 ,  H04L61/2514 ,  H04L61/2592 ,  H04L61/6068

Abstract: A method is provided in one example embodiment and includes configuring on a network element a first tunnel from the network element to a first network, wherein the configuring comprises mapping a nexthop address of the local network element to a transport address of the tunnel on the network to create a first nexthop-to-transport mapping for the network element; and advertising the first nexthop-to-transport mapping along with routing information for the network element to remote network elements.

公开(公告)号：US09723106B2

公开(公告)日：2017-08-01

申请号：US14838963

申请日：2015-08-28

Applicant: Cisco Technology, Inc.

Inventor： Naiming Shen ,  Keyur P. Patel ,  Carlos M. Pignataro ,  James N. Guichard

IPC: H04L12/28 ,  H04L29/08 ,  H04L12/24 ,  H04L12/721

CPC classification number: H04L67/327 ,  H04L41/0806 ,  H04L41/5054 ,  H04L41/5058 ,  H04L45/306 ,  H04L45/44

Abstract: A system comprising a plurality of service nodes, a controller and a network device in communication with the controller. Each of the plurality of service nodes is configured to support one or more service functions to establish a service function chain that includes a plurality of service functions to be performed by routing traffic among the plurality of service nodes. The controller is configured to generate provisioning information for the service function chain. The provisioning information includes at least one condition upon which a service function reclassification or branching operation is to be performed by at least one service node. The network device is in communication with the controller, and is configured to distribute the provisioning information for the service function chain to the plurality of service nodes using a distributed routing protocol.

公开(公告)号：US20160380864A1

公开(公告)日：2016-12-29

申请号：US14751503

申请日：2015-06-26

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Naiming Shen ,  Jun Zhuang ,  Enke Chen ,  Michael Lee Sullenberger

IPC: H04L12/26

CPC classification number: H04L43/10 ,  H04L63/0227 ,  H04L67/22

Abstract: In one embodiment, a method includes generating at a network device, a trace packet comprising an IP (Internet Protocol) to Source Group Tag (SGT) binding, transmitting the trace packet from the network device to an SGT capable device, wherein at least one non-SGT capable device is interposed in a path between the network device and the SGT capable device, and receiving at the network device, a reply packet from the SGT capable device in response to the trace packet, the reply packet indicating that the IP to SGT binding was installed at the SGT capable device. An apparatus and logic are also disclosed herein.

Abstract translation: 在一个实施例中，一种方法包括在网络设备处生成包括到源组标签（SGT）绑定的IP（因特网协议）的跟踪分组，将跟踪分组从网络设备发送到具有SGT能力的设备，其中至少一个 非SGT能力的设备被插入在网络设备和具有SGT能力的设备之间的路径中，并且在网络设备处接收来自具有SGT能力的设备的响应于跟踪分组的应答分组，该应答分组指示该IP SGT绑定安装在SGT设备上。 本文还公开了一种装置和逻辑。