公开(公告)号：US11902139B2

公开(公告)日：2024-02-13

申请号：US17532776

申请日：2021-11-22

申请人： Cisco Technology, Inc.

发明人： Atri Indiresan ,  Frank Brockners ,  Akshay Dorwat

IPC分类号： H04L43/12 ,  H04L9/40 ,  H04L43/0823 ,  H04L45/18 ,  H04L41/14

CPC分类号： H04L43/12 ,  H04L41/14 ,  H04L43/0823 ,  H04L45/18 ,  H04L63/1425 ,  H04L63/1458

摘要： This disclosure describes various methods, systems, and devices related to identifying an issue in a network using a probe packet. An example method includes identifying an expired data packet transmitted in a network and addressed to a destination; generating a probe packet addressed to the destination; and forwarding the probe packet. When the probe packet is received, a report indicating a routing loop in the network can be transmitted to an administrator.

公开(公告)号：US20240048487A1

公开(公告)日：2024-02-08

申请号：US18377712

申请日：2023-10-06

申请人： Cisco Technology, Inc.

发明人： Atri Indiresan ,  Frank Brockners ,  Shwetha Subray Bhandari

IPC分类号： H04L45/7453 ,  H04L41/0695 ,  H04L47/2483 ,  H04L61/5007

CPC分类号： H04L45/7453 ,  H04L41/0695 ,  H04L47/2483 ,  H04L61/5007

摘要： This disclosure describes various methods, systems, and devices related to identifying path changes of data flows in a network. An example method includes receiving, at a node, a packet including a first signature. The method further includes generating a second signature by inputting the first signature and one or more node details into a hash function. The method includes replacing the first signature with the second signature in the packet. The packet including the second value is forwarded by the node.

公开(公告)号：US20210144075A1

公开(公告)日：2021-05-13

申请号：US17155312

申请日：2021-01-22

申请人： Cisco Technology, Inc.

发明人： Atri Indiresan ,  Linda Tin-Wen Cheng ,  Melvin Tsai ,  Peter Geoffrey Jones ,  Da-Yuan Tung ,  David John Zacks

IPC分类号： H04L12/26 ,  H04L12/741 ,  H04L29/06

摘要： Presented herein is an exemplified system and method that provides visibility, for traffic analytics, into secured encapsulated packet (e.g., secure VXLAN-GPE packet, a secure metadata-GPE packet or other GPE standards). The exemplified system and method facilitate encryption of traffic in a granular manner that also facilitate the monitoring of said secure traffic in a fabric network in an end-to-end manner throughout the network. Such monitoring can be beneficially used for analytics, performance analysis, and network debugging/troubleshooting.

公开(公告)号：US10547467B2

公开(公告)日：2020-01-28

申请号：US15792180

申请日：2017-10-24

申请人： Cisco Technology, Inc.

发明人： Sanjay Kumar Hooda ,  Prakash C. Jain ,  Rishabh Parekh ,  Atri Indiresan ,  Satish Kondalam ,  Victor Moreno

IPC分类号： H04L12/18 ,  H04L29/12 ,  H04L29/06 ,  H04L12/853

摘要： A method including determining that network traffic being transmitted is unicast or multicast; mapping to which virtual network and locator address each host belongs; generating leaking data for unicast and multicast traffic, wherein the leaking data indicates that a first virtual network leaks traffic to a second virtual network; receiving a request from the second virtual network to receive traffic from a host in the first virtual network; determining, based on the leaking data and the type of traffic being transmitted, if the first virtual network leaks traffic to the second virtual network; if the first virtual network leaks traffic to the second virtual network, determining a locator address for the host in the first virtual network using the mapping data; and transmitting the locator address for the host to the second virtual network to enable traffic leaking from the host to the second virtual network is disclosed.

公开(公告)号：US09918217B1

公开(公告)日：2018-03-13

申请号：US15405614

申请日：2017-01-13

申请人： Cisco Technology, Inc.

发明人： Sanjay Kumar Hooda ,  Gaurav Dawra ,  Sudhir Kumar Jain ,  Atri Indiresan

IPC分类号： H04W8/18 ,  H04W8/16 ,  H04W64/00 ,  H04W8/00 ,  H04W88/12 ,  H04W84/12 ,  H04W88/16

CPC分类号： H04W60/04 ,  H04W8/02 ,  H04W84/12 ,  H04W88/12 ,  H04W88/16

摘要： Fast roaming across a network fabric may be provided. A route device may receive location information corresponding to a client device in response to roaming by the client device from a first access point connected to a first network device to a second access point connected to a second network device. The first network device and the second network device may comprise fabric edge nodes on the fabric network. The first network device and the second network device may be ones of a plurality of network devices in the fabric network. On detecting the roaming of the client device, the route device may be updated with the new location, and then the route device may send, to the plurality of network devices in the fabric network, the location information corresponding to the client device.

公开(公告)号：US11863383B2

公开(公告)日：2024-01-02

申请号：US17850261

申请日：2022-06-27

申请人： Cisco Technology, Inc.

发明人： Riaz Khan ,  Atri Indiresan

IPC分类号： H04L41/0816 ,  H04L41/08 ,  H04L41/0604 ,  G06F11/36 ,  H04L43/50 ,  H04L12/46 ,  H04L45/28

CPC分类号： H04L41/0816 ,  G06F11/3656 ,  G06F11/3664 ,  H04L12/4633 ,  H04L41/0627 ,  H04L41/0886 ,  H04L43/50 ,  H04L45/28

摘要： An exemplary method is disclosed that facilitate the on-demand creation of an exemplary instrumented network device in a cloud infrastructure, remote server, evaluation platform, or customized testing server and to form a stack between the instrumented network device as a debug network device and a target network device. The control plane of the target network device then switches over, via a switchover operation, to the control plane of the debug network device, while the data-plane of the target network device continues to operate. Once switched over, the instrumentation (e.g., hardware or software) of the control plane or debug network device facilitates the debug, optimization, profile, and/or recovery of the physical network device, even in a live network.

公开(公告)号：US20220407775A1

公开(公告)日：2022-12-22

申请号：US17850261

申请日：2022-06-27

申请人： Cisco Technology, Inc.

发明人： Riaz Khan ,  Atri Indiresan

IPC分类号： H04L41/0816 ,  H04L41/08 ,  H04L41/0604 ,  G06F11/36 ,  H04L43/50 ,  H04L12/46 ,  H04L45/28

摘要： An exemplary method is disclosed that facilitate the on-demand creation of an exemplary instrumented network device in a cloud infrastructure, remote server, evaluation platform, or customized testing server and to form a stack between the instrumented network device as a debug network device and a target network device. The control plane of the target network device then switches over, via a switchover operation, to the control plane of the debug network device, while the data-plane of the target network device continues to operate. Once switched over, the instrumentation (e.g., hardware or software) of the control plane or debug network device facilitates the debug, optimization, profile, and/or recovery of the physical network device, even in a live network.

公开(公告)号：US11240154B2

公开(公告)日：2022-02-01

申请号：US16742544

申请日：2020-01-14

申请人： CISCO TECHNOLOGY, INC.

发明人： Atri Indiresan ,  Manas Pati ,  Chunjen Wang ,  Christophe Rene

IPC分类号： H04L12/00 ,  H04L12/741 ,  H04L12/933

摘要： A controller device for a network provides data associated with pipeline capabilities of a programmable switch. The programmable switch receives data associated with pipeline capabilities of the programmable switch. The pipeline capabilities include a plurality of flow tables and allowable table transitions for each of the flow tables. The programmable switch determines that a first flow table and a second flow table are mutually independent based on the allowable table transitions for each of the flow tables. The programmable switch configures a pipeline for data flow in the computing device, the pipeline comprising a plurality of pipeline stages, a particular pipeline stage comprising the first flow table and the second flow table.

公开(公告)号：US20210344598A1

公开(公告)日：2021-11-04

申请号：US17377047

申请日：2021-07-15

申请人： Cisco Technology, Inc.

发明人： Atri Indiresan ,  Frank Brockners ,  Shwetha Subray Bhandari

IPC分类号： H04L12/743 ,  H04L12/24 ,  H04L12/851 ,  H04L29/12

摘要： This disclosure describes various methods, systems, and devices related to identifying path changes of data flows in a network. An example method includes receiving, at a node, a packet including a first value. The method further includes generating a second value by inputting the first value and one or more node details into a hash function. The method includes replacing the first value with the second value in the packet. The packet including the second value is forwarded by the node.

公开(公告)号：US20210218674A1

公开(公告)日：2021-07-15

申请号：US16742544

申请日：2020-01-14

申请人： CISCO TECHNOLOGY, INC.

发明人： Atri Indiresan ,  Manas Pati ,  Chunjen Wang ,  Christophe Rene

IPC分类号： H04L12/741 ,  H04L12/933

摘要： A controller device for a network provides data associated with pipeline capabilities of a programmable switch. The programmable switch receives data associated with pipeline capabilities of the programmable switch. The pipeline capabilities include a plurality of flow tables and allowable table transitions for each of the flow tables. The programmable switch determines that a first flow table and a second flow table are mutually independent based on the allowable table transitions for each of the flow tables. The programmable switch configures a pipeline for data flow in the computing device, the pipeline comprising a plurality of pipeline stages, a particular pipeline stage comprising the first flow table and the second flow table.