公开(公告)号：US20170317919A1

公开(公告)日：2017-11-02

申请号：US15143202

申请日：2016-04-29

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Rex Emmanuel Fernando ,  Victor Manuel Moreno ,  Shyam Kapadia ,  Liqin Dong ,  Murali Venkateshaiah

IPC: H04L12/761 ,  H04L12/46 ,  H04L29/12

CPC classification number: H04L61/103 ,  H04L12/4633 ,  H04L41/0806 ,  H04L41/12 ,  H04L61/6022

Abstract: A system and a method are disclosed for enabling interoperability between data plane learning endpoints and control plane learning endpoints in an overlay network environment. An exemplary method for managing network traffic in the overlay network environment includes receiving network packets in an overlay network from data plane learning endpoints and control plane learning endpoints, wherein the overlay network extends Layer 2 network traffic over a Layer 3 network; operating in a data plane learning mode when a network packet is received from a data plane learning endpoint; and operating in a control plane learning mode when the network packet is received from a control plane learning endpoint. Where the overlay network includes more than one overlay segment, the method further includes operating as an anchor node for routing inter-overlay segment traffic to and from hosts that operate behind the data plane learning endpoints.

公开(公告)号：US20160277290A1

公开(公告)日：2016-09-22

申请号：US14659220

申请日：2015-03-16

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Muthurajah Sivabalan ,  Sami Boutros ,  Clarence Filsfils ,  Rex Emmanuel Fernando ,  Lakshmi Sharma ,  Santiago Vazquez Freitas ,  Bruce McDougall ,  Robert Keith Fielding

IPC: H04L12/723 ,  H04L29/12 ,  H04L12/911

CPC classification number: H04L45/50 ,  H04L47/825 ,  H04L61/2007

Abstract: A method is provided in one example embodiment and includes receiving a request to create a path through a network, wherein the path originates on a first network device and terminates on the second network device; identifying a first controller associated with the first network device, wherein the first controller proxies control plane functions for the first network device; identifying a second controller associated with the second network device, wherein the second controller proxies control plane functions for the second network device; and computing the path using the first controller as a source and the second controller as a destination. The first controller installs the computed path on the first network device and the second controller installs the computed path on the second network device.

Abstract translation: 在一个示例性实施例中提供了一种方法，并且包括接收通过网络创建路径的请求，其中所述路径起始于第一网络设备并终止于所述第二网络设备上; 识别与所述第一网络设备相关联的第一控制器，其中所述第一控制器代理所述第一网络设备的控制平面功能; 识别与所述第二网络设备相关联的第二控制器，其中所述第二控制器代理所述第二网络设备的控制平面功能; 以及使用第一控制器作为源并且将第二控制器作为目的地来计算路径。 第一个控制器在第一个网络设备上安装计算的路径，第二个控制器将计算的路径安装在第二个网络设备上。

公开(公告)号：US10454877B2

公开(公告)日：2019-10-22

申请号：US15143202

申请日：2016-04-29

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Rex Emmanuel Fernando ,  Victor Manuel Moreno ,  Shyam Kapadia ,  Liqin Dong ,  Murali Venkateshaiah

IPC: H04L29/12 ,  H04L12/46 ,  H04L12/24

Abstract: A system and a method are disclosed for enabling interoperability between data plane learning endpoints and control plane learning endpoints in an overlay network environment. An exemplary method for managing network traffic in the overlay network environment includes receiving network packets in an overlay network from data plane learning endpoints and control plane learning endpoints, wherein the overlay network extends Layer 2 network traffic over a Layer 3 network; operating in a data plane learning mode when a network packet is received from a data plane learning endpoint; and operating in a control plane learning mode when the network packet is received from a control plane learning endpoint. Where the overlay network includes more than one overlay segment, the method further includes operating as an anchor node for routing inter-overlay segment traffic to and from hosts that operate behind the data plane learning endpoints.

公开(公告)号：US10250494B2

公开(公告)日：2019-04-02

申请号：US15337976

申请日：2016-10-28

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Muthurajah Sivabalan ,  Sami Boutros ,  Clarence Filsfils ,  Rex Emmanuel Fernando ,  Lakshmi Sharma ,  Santiago Vazquez Freitas ,  Bruce McDougall ,  Robert Keith Fielding

IPC: H04L12/28 ,  H04L12/723 ,  H04L12/911 ,  H04L29/12

Abstract: A method is provided in one example embodiment and includes receiving a request to create a path through a network, wherein the path originates on a first network device and terminates on the second network device; identifying a first controller associated with the first network device, wherein the first controller proxies control plane functions for the first network device; identifying a second controller associated with the second network device, wherein the second controller proxies control plane functions for the second network device; and computing the path using the first controller as a source and the second controller as a destination. The first controller installs the computed path on the first network device and the second controller installs the computed path on the second network device.

公开(公告)号：US20170048138A1

公开(公告)日：2017-02-16

申请号：US15337976

申请日：2016-10-28

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Muthurajah Sivabalan ,  Sami Boutros ,  Clarence Filsfils ,  Rex Emmanuel Fernando ,  Lakshmi Sharma ,  Santiago Vazquez Freitas ,  Bruce McDougall ,  Robert Keith Fielding

IPC: H04L12/723 ,  H04L29/12 ,  H04L12/911

CPC classification number: H04L45/50 ,  H04L47/825 ,  H04L61/2007

Abstract: A method is provided in one example embodiment and includes receiving a request to create a path through a network, wherein the path originates on a first network device and terminates on the second network device; identifying a first controller associated with the first network device, wherein the first controller proxies control plane functions for the first network device; identifying a second controller associated with the second network device, wherein the second controller proxies control plane functions for the second network device; and computing the path using the first controller as a source and the second controller as a destination. The first controller installs the computed path on the first network device and the second controller installs the computed path on the second network device.

Abstract translation: 在一个示例性实施例中提供了一种方法，并且包括接收通过网络创建路径的请求，其中所述路径起始于第一网络设备并终止于所述第二网络设备上; 识别与所述第一网络设备相关联的第一控制器，其中所述第一控制器代理所述第一网络设备的控制平面功能; 识别与所述第二网络设备相关联的第二控制器，其中所述第二控制器代理所述第二网络设备的控制平面功能; 以及使用第一控制器作为源并且将第二控制器作为目的地来计算路径。 第一个控制器在第一个网络设备上安装计算的路径，第二个控制器将计算的路径安装在第二个网络设备上。

公开(公告)号：US11870641B2

公开(公告)日：2024-01-09

申请号：US18164010

申请日：2023-02-03

Applicant: Cisco Technology, Inc.

Inventor： Oliver James Bull ,  Rex Emmanuel Fernando ,  Anand Oswal ,  Kausik Majumdar ,  Darren Russell Dukes ,  Sanjay Kumar Hooda

IPC: H04L43/08 ,  H04L41/0806 ,  H04L41/0893 ,  H04L47/24 ,  H04L47/22 ,  H04L47/20 ,  H04W84/04 ,  H04W88/16

CPC classification number: H04L41/0806 ,  H04L41/0893 ,  H04L43/08 ,  H04L47/20 ,  H04L47/22 ,  H04L47/24 ,  H04W84/042 ,  H04W88/16

Abstract: An enterprise controller of an enterprise network sends to a service gateway of a service provider network a request for network slice information about network slices provisioned on a data plane of the service provider network. Responsive to the sending, the enterprise controller receives from the service gateway the network slice information including identifiers of and properties associated with the network slices. Responsive to receiving a request for the network slice information from a network device at a border of a forwarding plane of the enterprise network, the enterprise controller sends the network slice information to the network device to cause the network device to perform configuring network traffic in the forwarding plane with identifiers of ones of the network slices that match the network traffic, and to perform forwarding the network traffic configured with the identifiers to the data plane of the service provider network.

公开(公告)号：US11374980B1

公开(公告)日：2022-06-28

申请号：US16746167

申请日：2020-01-17

Applicant: Cisco Technology, Inc.

Inventor： Syam Sundar V Appala ,  Rex Emmanuel Fernando ,  Sanjay Kumar Hooda

IPC: H04L9/40 ,  H04L41/0893 ,  H04L41/12

Abstract: A plurality of policies to be enforced in a network environment via a plurality of devices are determined. A topology of the plurality of devices within the network environment is also determined. For each policy of the plurality of policies, a device of the plurality of devices is selected as the location at which to enforce the policy of the plurality of policies. Selecting the device for each policy of the plurality of policies includes correlating the policy of the plurality of policies with another of the plurality of policies and correlating the policy of the plurality of policies with the topology.

公开(公告)号：US20210288877A1

公开(公告)日：2021-09-16

申请号：US17336424

申请日：2021-06-02

Applicant: Cisco Technology, Inc.

Inventor： Oliver James Bull ,  Rex Emmanuel Fernando ,  Anand Oswal ,  Kausik Majumdar ,  Darren Russell Dukes ,  Sanjay Kumar Hooda

IPC: H04L12/24 ,  H04L12/26 ,  H04L12/851 ,  H04L12/815 ,  H04L12/813

Abstract: An enterprise controller of an enterprise network sends to a service gateway of a service provider network a request for network slice information about network slices provisioned on a data plane of the service provider network. Responsive to the sending, the enterprise controller receives from the service gateway the network slice information including identifiers of and properties associated with the network slices. Responsive to receiving a request for the network slice information from a network device at a border of a forwarding plane of the enterprise network, the enterprise controller sends the network slice information to the network device to cause the network device to perform configuring network traffic in the forwarding plane with identifiers of ones of the network slices that match the network traffic, and to perform forwarding the network traffic configured with the identifiers to the data plane of the service provider network.

公开(公告)号：US10826775B1

公开(公告)日：2020-11-03

申请号：US16446338

申请日：2019-06-19

Applicant: Cisco Technology, Inc.

Inventor： Victor Moreno ,  Anand Oswal ,  Rex Emmanuel Fernando ,  Syam Sundar Appala ,  Sanjay Kumar Hooda

IPC: H04L12/24 ,  H04L12/715 ,  H04L29/06 ,  G06F9/455 ,  H04L12/721

Abstract: Systems, methods, and computer-readable media for providing cross-domain policy enforcement. In some examples, transit VRFs for a destination network domain and a source network domain are created. Route advertisements for nodes coupled to source VRFs in the source network domain are created that include identifications of the source VRFs. The route advertisements can be transmitted from a source transit VRF in the source network domain to a destination transit VRF in the destination network domain. The route advertisements can then be filtered at the destination transit VRF based on a cross-domain policy using the identifications of the source VRFs to export routes to destination VRFs in the destination network domain according to the cross-domain policy.

公开(公告)号：US20180367459A1

公开(公告)日：2018-12-20

申请号：US15626150

申请日：2017-06-18

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Ravishankar Chandrasekaran ,  Rex Emmanuel Fernando ,  Sanjay Kumar Hooda ,  Jesus Arango

IPC: H04L12/813 ,  H04L12/46

Abstract: One embodiment of a method includes receiving at a first network node traffic from a second network node; and sending by the first network node to a third network node information identifying the second network node via a Local Area Network (“LAN”) connection between the first and third network nodes. Subsequent to receipt of the information identifying the second network node, the third network node updates a locator table maintained by the third network node to include an entry including the information identifying the second network node received by the third network node from the first network node. Upon receipt by the third network node of a notification that the first network node has failed, the third network node sends an update only to network nodes that have an entry in the locator table indicating that the first network node has failed.