公开(公告)号：US09794167B2

公开(公告)日：2017-10-17

申请号：US14754850

申请日：2015-06-30

Applicant: Cisco Technology, Inc.

Inventor： Pascal Thubert ,  Patrice Bellagamba ,  Ijsbrand Wijnands

IPC: H04L12/705 ,  H04L12/735 ,  H04L12/707 ,  H04L12/24 ,  H04L12/751

CPC classification number: H04L45/18 ,  H04L41/0803 ,  H04L45/02 ,  H04L45/128 ,  H04L45/24

Abstract: In one embodiment, a method comprises creating, in a computing network, a loop-free routing topology comprising a plurality of routing arcs for reaching a destination network node, each routing arc comprising a first network node as a first end of the routing arc, a second network node as a second end of the routing arc, and at least a third network node configured for routing any network traffic along the routing arc toward the destination node via any one of the first or second ends of the routing arc, the loop-free routing topology providing first and second non-congruent paths; and forwarding bicasting data, comprising a data packet in a first direction from a network node and a bicasted copy of the data packet in a second direction from the network node, concurrently to the destination node respectively via the first and second non-congruent paths.

公开(公告)号：US09560018B2

公开(公告)日：2017-01-31

申请号：US14563688

申请日：2014-12-08

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Patrice Bellagamba ,  Michael H. Behringer ,  Santiago Vazquez Freitas

IPC: H04L29/06 ,  H04L29/08 ,  H04L29/12 ,  H04L12/715

CPC classification number: H04L63/0281 ,  H04L45/04 ,  H04L45/64 ,  H04L61/103 ,  H04L61/2084 ,  H04L67/10 ,  H04L67/141 ,  H04L67/2819

Abstract: A method is provided in one example embodiment and includes configuring a local network element as an autonomic registrar for a designated network domain; establishing an autonomic control plane (“ACP”) between the local network element and one or more remote network elements identified by local network element as a remote neighbor; designating a locally-defined subnet at the local network element to be extended to each of the one or more remote network elements; and executing an ACP command at the local network element, wherein the executing triggers a message to each of the one or more remote network elements, the message including information regarding the designated local subnet. The information included in the message is used by each of the remote network elements to auto-resolve its Locator/Identifier Separation Protocol (“LISP”) configuration, enabling the designated local subnet to be extended to each of the one or more remote network elements.

Abstract translation: 在一个示例实施例中提供了一种方法，并且包括将本地网络元件配置为用于指定网络域的自主注册器; 在本地网络元件和由本地网元识别为远程邻居的一个或多个远程网络元件之间建立自主控制平面（“ACP”）; 在所述本地网络元件处指定要扩展到所述一个或多个远程网络元件中的每一个的本地定义的子网; 以及在所述本地网络单元处执行ACP命令，其中所述执行向所述一个或多个远程网络元件中的每一个触发消息，所述消息包括关于所指定的本地子网的信息。 消息中包含的信息被每个远程网络元件使用以自动解析其定位器/标识符分离协议（“LISP”）配置，使指定的本地子网能够扩展到一个或多个远程网络元件 。

公开(公告)号：US09438531B2

公开(公告)日：2016-09-06

申请号：US15048396

申请日：2016-02-19

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Santiago Vazquez Freitas ,  Patrice Bellagamba

IPC: G06F15/167 ,  H04L12/911 ,  H04L29/08 ,  H04L29/12

CPC classification number: H04L47/70 ,  H04L61/103 ,  H04L61/2007 ,  H04L61/2084 ,  H04L67/2842

Abstract: The present disclosure describes methods and systems for enabling a migration of network elements from a first location to a second location remote from the first location without changing the Internet Protocol (IP) addresses, subnet mask, and/or default gateway of the network elements. The first location has a first Locator/Identifier Separation Protocol (LISP) router configured on a stick and the second location having a second LISP router configured on a stick. Both the first LISP router and the second LISP router are on the same subnet. Effectively, LISP provides a Layer 3 extension stretching a subnet across the first location and the second location (Stretched Subnet Mode (SSM)). By implementing LISP routers in this manner, system engineers can migrate network elements easily between two locations.

公开(公告)号：US20160173405A1

公开(公告)日：2016-06-16

申请号：US15048396

申请日：2016-02-19

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Santiago Vazquez Freitas ,  Patrice Bellagamba

IPC: H04L12/911 ,  H04L29/12 ,  H04L29/08

CPC classification number: H04L47/70 ,  H04L61/103 ,  H04L61/2007 ,  H04L61/2084 ,  H04L67/2842

Abstract: The present disclosure describes methods and systems for enabling a migration of network elements from a first location to a second location remote from the first location without changing the Internet Protocol (IP) addresses, subnet mask, and/or default gateway of the network elements. The first location has a first Locator/Identifier Separation Protocol (LISP) router configured on a stick and the second location having a second LISP router configured on a stick. Both the first LISP router and the second LISP router are on the same subnet. Effectively, LISP provides a Layer 3 extension stretching a subnet across the first location and the second location (Stretched Subnet Mode (SSM)). By implementing LISP routers in this manner, system engineers can migrate network elements easily between two locations.

Abstract translation: 本公开描述了用于使网络元件从第一位置迁移到远离第一位置的第二位置的方法和系统，而不改变网络元件的因特网协议（IP）地址，子网掩码和/或默认网关。 第一个位置具有在棒上配置的第一个定位器/标识符分离协议（LISP）路由器，而第二个位置具有在棒上配置的第二个LISP路由器。 第一个LISP路由器和第二个LISP路由器都在同一个子网上。 有效地，LISP提供了在第一位置和第二位置（拉伸子网模式（SSM））上延伸子网的第3层扩展。 通过以这种方式实现LISP路由器，系统工程师可以在两个位置之间轻松迁移网元。

公开(公告)号：US10110483B2

公开(公告)日：2018-10-23

申请号：US15073931

申请日：2016-03-18

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Michael H. Behringer ,  Patrice Bellagamba

IPC: G06F15/173 ,  H04L12/715 ,  H04L12/46

Abstract: In one embodiment, a method includes receiving at a virtual controller operating at a network device, global parameters for a plurality of virtual machines located in a first network site and in communication with a second network site through a switch, converting at the virtual controller, the global parameters into global overlay network parameters, and transmitting the global overlay network parameters to the switch for use in automatically creating a global network overlay. The global overlay network parameters define an end-to-end network extending from the virtual machines in the first network site to a plurality of virtual machines in the second network site. An apparatus and logic are also disclosed herein.

公开(公告)号：US09813340B2

公开(公告)日：2017-11-07

申请号：US14754922

申请日：2015-06-30

Applicant: Cisco Technology, Inc.

Inventor： Pascal Thubert ,  Dirk Anteunis ,  Patrice Bellagamba ,  David Delano Ward

IPC: H04W28/08 ,  H04L12/751 ,  H04L12/743 ,  H04L12/801 ,  H04L12/803

CPC classification number: H04L47/11 ,  H04L47/125

Abstract: In one embodiment, a method comprises detecting a traffic condition by a network device in a loop-free routing topology comprising routing arcs for reaching a destination device, each routing arc comprising a first edge, a second edge, and at least a third network device configured for routing any network traffic along the routing arc toward the destination device and exiting via any one of the first or second edges of the routing arc, the traffic condition proximate to the first edge of at least one of the routing arcs in which the network device is positioned; and the network device initiating load balancing based on sending a management frame over a data plane of the at least one routing arc toward the corresponding second edge, the management frame requesting a change in load balancing for at least one of an identified traffic class based on the detected traffic condition.

公开(公告)号：US09479355B2

公开(公告)日：2016-10-25

申请号：US14255855

申请日：2014-04-17

Applicant: Cisco Technology, Inc.

Inventor： Patrice Bellagamba

IPC: H04L12/46 ,  H04L12/701 ,  H04L12/705 ,  H04L12/707 ,  H04L12/703 ,  H04L12/753 ,  H04L12/723 ,  H04L12/721 ,  H04L12/24 ,  H04L29/14 ,  H04Q3/00 ,  H04L1/22 ,  H04Q11/00

CPC classification number: H04L12/46 ,  H04L1/22 ,  H04L12/462 ,  H04L41/0654 ,  H04L45/00 ,  H04L45/18 ,  H04L45/22 ,  H04L45/28 ,  H04L45/48 ,  H04L45/50 ,  H04L45/68 ,  H04L69/40 ,  H04Q3/0079 ,  H04Q2011/0081 ,  H04Q2213/167

Abstract: In one embodiment, a system includes a first network, a second network, and a core network connecting the first network to the second network. The first network includes a first set of two or more network devices, wherein the first network has a first spanning tree associated therewith. Similarly, the second network includes a second set of two or more network devices, wherein the second network has a second spanning tree associated therewith, wherein the second spanning tree is separate from the first spanning tree.

Abstract translation: 在一个实施例中，系统包括第一网络，第二网络和将第一网络连接到第二网络的核心网络。 第一网络包括第一组两个或多个网络设备，其中第一网络具有与其相关联的第一生成树。 类似地，第二网络包括第二组两个或多个网络设备，其中第二网络具有与之相关联的第二生成树，其中第二生成树与第一生成树分离。

公开(公告)号：US09276871B1

公开(公告)日：2016-03-01

申请号：US14220922

申请日：2014-03-20

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Santiago Vazquez Freitas ,  Patrice Bellagamba

IPC: G06F15/167 ,  H04L12/911 ,  H04L29/12

CPC classification number: H04L47/70 ,  H04L61/103 ,  H04L61/2007 ,  H04L61/2084 ,  H04L67/2842

Abstract: The present disclosure describes methods and systems for enabling a migration of network elements from a first location to a second location remote from the first location without changing the Internet Protocol (IP) addresses, subnet mask, and/or default gateway of the network elements. The first location has a first Locator/Identifier Separation Protocol (LISP) router configured on a stick and the second location having a second LISP router configured on a stick. Both the first LISP router and the second LISP router are on the same subnet. Effectively, LISP provides a Layer 3 extension stretching a subnet across the first location and the second location (Stretched Subnet Mode (SSM)). By implementing LISP routers in this manner, system engineers can migrate network elements easily between two locations.

Abstract translation: 本公开描述了用于使网络元件从第一位置迁移到远离第一位置的第二位置的方法和系统，而不改变网络元件的因特网协议（IP）地址，子网掩码和/或默认网关。 第一个位置具有在棒上配置的第一个定位器/标识符分离协议（LISP）路由器，而第二个位置具有在棒上配置的第二个LISP路由器。 第一个LISP路由器和第二个LISP路由器都在同一个子网上。 有效地，LISP提供了在第一位置和第二位置（拉伸子网模式（SSM））上延伸子网的第3层扩展。 通过以这种方式实现LISP路由器，系统工程师可以在两个位置之间轻松迁移网元。

公开(公告)号：US09264243B2

公开(公告)日：2016-02-16

申请号：US13771041

申请日：2013-02-19

Applicant: Cisco Technology, Inc.

Inventor： Pascal Thubert ,  Patrice Bellagamba ,  Ijsbrand Wijnands

IPC: H04L12/721 ,  H04L12/705 ,  H04L12/707 ,  H04L12/703 ,  H04L12/751 ,  H04L12/761 ,  H04L12/18

CPC classification number: H04L12/18 ,  H04L45/16 ,  H04L45/18 ,  H04L45/22 ,  H04L45/28 ,  H04L45/32

Abstract: In one embodiment, a method comprises creating, in a computing network, a loop-free routing topology comprising a plurality of routing arcs for reaching multicast listeners from a multicast source, each routing arc comprising a first network device as a first end of the routing arc, a second network device as a second end of the routing arc, and at least a third network device configured for receiving from each of the first and second network devices a copy of a multicast packet originated from the multicast source; and causing the multicast packet to be propagated throughout the loop-free routing topology based on the first and second ends of each routing arc forwarding the corresponding copy into the corresponding routing arc.

Abstract translation: 在一个实施例中，一种方法包括在计算网络中创建无环路由拓扑，其包括用于从组播源到达多播收听者的多个路由选择弧，每个路由弧包括作为路由的第一端的第一网络设备 弧，作为路由弧的第二端的第二网络设备，以及配置用于从所述第一和第二网络设备中的每一个接收来自所述多播源的多播分组的副本的至少第三网络设备; 并且基于每个路由的第一和第二端使所述多播分组在所述无环路由拓扑中传播，将相应的副本转发到相应的路由选择弧。