公开(公告)号：US20230171662A1

公开(公告)日：2023-06-01

申请号：US17536874

申请日：2021-11-29

Applicant: Cisco Technology, Inc.

Inventor： Victor M. Moreno ,  Sanjay K. Hooda ,  Errol Fenton Roberts

IPC: H04W36/18 ,  H04W36/00 ,  H04W36/32

CPC classification number: H04W36/18 ,  H04W36/0061 ,  H04W36/0058 ,  H04W36/00835 ,  H04W36/32

Abstract: A wireless telemetry process (WTP) may obtain telemetry data which includes signal strength information associated with a plurality of fabric wireless access points (APs) of a network fabric. The WTP may identify that a signal strength between a current AP and a wireless endpoint is below a threshold. In response, the WTP may select addresses of a set of handoff candidate APs for the wireless endpoint based on the signal strength information. The WTP may communicate, to a map server, a message to register, as entries in a replication list, a plurality of routing locators associated with the addresses of the set of handoff candidate APs for association with an address of the wireless endpoint. The map server may notify a router of the replication list, for replicating packets intended for the wireless endpoint to a plurality of routers that are connected to the set of handoff candidate APs.

公开(公告)号：US11496399B2

公开(公告)日：2022-11-08

申请号：US16172547

申请日：2018-10-26

Applicant: Cisco Technology, Inc.

Inventor： Reshad Rahman ,  Victor M. Moreno

IPC: H04L47/125 ,  H04L43/0829 ,  H04L45/02 ,  H04L45/48 ,  H04L45/745 ,  H04L47/26 ,  H04L49/25 ,  H04L43/0852 ,  H04L45/121 ,  H04L45/00 ,  H04W40/12 ,  G06N20/00 ,  G06N3/08

Abstract: Techniques for improved routing based on network traffic are provided. Telemetry data relating to a first network node of a plurality of network nodes in a locator ID separation protocol (LISP) fabric is received. A first portion of the telemetry data that relates to a first destination of a plurality of destinations is identified. Further, a first routing weight associated with a first interface of the first network node is revised based on the first portion of the telemetry data, where the first interface is associated with the first destination. The revised first routing weight is published to a second plurality of network nodes in the LISP fabric, wherein the second plurality of network nodes route packets to the first network node based in part on the revised first routing weight.

公开(公告)号：US20210135984A1

公开(公告)日：2021-05-06

申请号：US17098633

申请日：2020-11-16

Applicant: Cisco Technology, Inc.

Inventor： Prakash Chand Jain ,  Sanjay Kumar Hooda ,  Victor M. Moreno ,  Satish Kumar Kondalam

IPC: H04L12/725 ,  H04L12/713 ,  H04L12/927 ,  H04L12/715

Abstract: In one embodiment, a method is performed at a node in a multi-site enterprise fabric. The method includes obtaining map entries from a fabric control plane of the multi-site enterprise fabric, where the map entries are associated with identifiers of endpoints in external networks, site and virtual network identifiers of sites in the multi-site enterprise fabric, location identifiers of border nodes, and characteristics of the border nodes. The method further includes receiving a request from a source to connect to an external endpoint. After deriving an external endpoint identifier and source parameters, the method additionally includes establishing at least one connection between the source and the external endpoint via border node(s) that are selected from the map entries based at least in part on the source parameters, the external endpoint identifier, and characteristics of the border node(s) with their site and virtual network identifier(s) along the at least one connection.

公开(公告)号：US10715633B2

公开(公告)日：2020-07-14

申请号：US15867273

申请日：2018-01-10

Applicant: Cisco Technology, Inc.

Inventor： Laxmi Mukund ,  Victor M. Moreno

IPC: H04L29/08 ,  H04L29/12 ,  H04L12/26 ,  H04L29/06

Abstract: Techniques are disclosed for maintaining reachability of an application moving between a central cloud network and a fog network using duplicate endpoint identifiers. Network characteristics of a cloud environment are monitored. The cloud environment includes a central cloud network and a fog network. A server in the central cloud network hosts an application that serves a client device. The application is assigned an endpoint identifier that is mapped to a locator identifier associated with the central cloud network. It is determined that a condition for moving the application to the fog network is satisfied based on the monitored network characteristics. An instance of the application is installed on a server in the fog network. The endpoint identifier is assigned to the application instance and mapped to a locator identifier associated with the fog network.

公开(公告)号：US10469381B2

公开(公告)日：2019-11-05

申请号：US15220441

申请日：2016-07-27

Applicant: Cisco Technology, Inc.

Inventor： Victor M. Moreno ,  Sanjay Kumar Hooda

IPC: H04L12/741 ,  H04L12/749 ,  H04L12/813

Abstract: A first network device may receive a frame from a first client device that may be destined for a second client device. Then a request may be sent to a network control plane of a network by the first network device in response to receiving the frame. The request may be for information on reachability for the second client device and may comprise an identifier of the second client device and first metadata corresponding to the first client device. The first network device may receive, from the network control plane, in response to sending the request, a policy rule-set for a flow corresponding to the frame and for a location of the second client device. The network control plane may use the identifier of the second client device and the first metadata as keys to lookup the location of the second client device and the policy rule-set.

公开(公告)号：US20190312809A1

公开(公告)日：2019-10-10

申请号：US15949398

申请日：2018-04-10

Applicant: Cisco Technology, Inc.

Inventor： Sanjay K. Hooda ,  Victor M. Moreno ,  Satish Kumar Kondalam

IPC: H04L12/741 ,  H04L12/933 ,  H04L12/715

Abstract: In one embodiment, a method generally includes a first edge (E) node in a network receiving an encapsulated data packet, wherein the encapsulated data packet comprises an outer header and a data packet, wherein the outer header comprises a first router locator (RLOC) corresponding to the first E node, wherein the data packet comprises an internet protocol (IP) header, and wherein the IP header comprises a destination endpoint identification (EID) corresponding to a host H. The first E node determines whether the host H is attached to the first E node. And in response to the first E node determining the host is attached to the first E node, the first E node forwards the data packet to the host H. The first E node receives a message from another node after the host H detaches from the first E node and reattaches to another E node, wherein the message comprises the destination EID.

公开(公告)号：US20180367337A1

公开(公告)日：2018-12-20

申请号：US16010444

申请日：2018-06-16

Applicant: Cisco Technology, Inc.

Inventor： Prakash Chand JAIN ,  Sanjay Kumar HOODA ,  Victor M. Moreno ,  Satish Kumar KONDALAM

IPC: H04L12/46 ,  H04L12/741

Abstract: In one embodiment, a method is performed at a first node. The method may include receiving, at a first node, a request from a source host associated with a network to communicate with a destination host. The first node may determine whether the destination host is associated with the network. If the destination host is not associated with the network, the first node may determine an instance identifier (IID) and a proxy egress tunnel router (PETR) locator address used to communicate with the destination host. The first node may send an indicator to an ingress tunnel router (ITR) to encapsulate a packet with the IID and the PETR locator address before sending the packet from the source host to the destination host.

公开(公告)号：US09858163B2

公开(公告)日：2018-01-02

申请号：US14721135

申请日：2015-05-26

Applicant: Cisco Technology, Inc.

Inventor： Dhananjaya Rao ,  Victor M. Moreno ,  Hasmit Grover ,  Gaurav Badoni

IPC: G06F15/16 ,  G06F11/20 ,  H04L12/911 ,  H04L12/46 ,  H04L12/751 ,  H04L29/08

CPC classification number: G06F11/2033 ,  G06F2201/86 ,  H04L12/4641 ,  H04L45/02 ,  H04L47/746 ,  H04L67/141

Abstract: Devices, methods and instructions encoded on computer readable medium for implementation of a dual-adjacency between edge devices of a network site. A first edge device comprises one or more local interfaces configured for communication, via a local network, with one or more network devices co-located in a first network site. The first edge device also comprises one or more overlay interfaces configured for communication, via a core network, with one or more network devices located in one or more other network sites connected to the core network. The first edge device comprises a processor configured to establish, via at least one of the local interfaces, a site communication channel with a second edge device co-located in the first network site. The processor is further configured to establish an overlay communication channel, via at least one of the overlay interfaces, with the second edge device.

公开(公告)号：US20140101321A1

公开(公告)日：2014-04-10

申请号：US13645694

申请日：2012-10-05

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Khalil A. Jabr ,  Ray Blair ,  Victor M. Moreno ,  Massimiliano Ardica

IPC: G06F15/16

CPC classification number: H04L63/0218 ,  H04L63/0254 ,  H04L67/1027

Abstract: Techniques are presented herein for redirection between any number of network devices that are distributed to any number of sites. A first message of a flow is received from a network endpoint at a first network device. A relationship between the endpoint and the first network device is registered in a directory that maps endpoints for network devices. A state for the flow is stored at the first network device. A second message is received for the flow which is indicative of the first endpoint at a second network device. It is determined that the second network device does not store the flow state for the flow. Querying is performed to receive information indicative of the relationship between the endpoint and the first network device. The received information is stored in a cache at the second network device. Services are applied to the second message according to the stored information.

Abstract translation: 本文介绍了分发给任何数量的站点的任意数量的网络设备之间的重定向技术。 从第一网络设备的网络端点接收流的第一消息。 端点和第一个网络设备之间的关系被注册到映射网络设备端点的目录中。 流的状态存储在第一网络设备。 接收到指示第二网络设备上的第一端点的流的第二消息。 确定第二网络设备不存储流的流状态。 执行查询以接收指示端点和第一网络设备之间的关系的信息。 所接收的信息被存储在第二网络设备的高速缓存中。 根据存储的信息将服务应用于第二消息。