公开(公告)号：US12177116B2

公开(公告)日：2024-12-24

申请号：US18352902

申请日：2023-07-14

Applicant: Cisco Technology, Inc.

Inventor： Robin James ,  Mithun Iyer ,  Himanshu Shah

IPC: H04L45/302 ,  H04L43/08 ,  H04L45/00 ,  H04L45/02 ,  H04L45/12 ,  H04L45/125 ,  H04L45/64 ,  H04L47/2425 ,  H04L61/4511

Abstract: A method may include receiving a domain name system (DNS) query at a network device, where the DNS query may be associated with a traffic flow identified for rerouting through an alternative path utilizing an alternative network device instead of a default path. The method may also include rewriting the DNS query such that the DNS query is routed through the alternative network device along the alternative path and to a DNS server associated with the alternative path. The method may additionally include receiving a DNS response from the DNS server, where a resource identified in the DNS response may be based on the DNS query coming through the alternative network device.

公开(公告)号：US20200220811A1

公开(公告)日：2020-07-09

申请号：US16823569

申请日：2020-03-19

Applicant: Cisco Technology, Inc.

Inventor： Himanshu Shah

IPC: H04L12/721 ,  H04L12/46

Abstract: In some examples, an example method to minimize asymmetric routing at a network node may include maintaining a flow table including one or more records, each record indicating a packet flow and a corresponding tunnel, receiving a data packet to process at a network node, and determining whether to process the data packet as a follower node. The method may also include, responsive to a determination to process the data packet as a follower node, determining whether there is an entry in the flow table for a packet flow associated with the received packet, and, responsive to a determination that there is an entry in the flow table for the packet flow, transmitting the received data packet through a tunnel corresponding to the packet flow.

公开(公告)号：US20210021511A1

公开(公告)日：2021-01-21

申请号：US17062153

申请日：2020-10-02

Applicant: Cisco Technology, Inc.

Inventor： Robin James ,  Mithun Iyer ,  Himanshu Shah

IPC: H04L12/725 ,  H04L12/707 ,  H04L29/12 ,  H04L12/26 ,  H04L12/851 ,  H04L12/721 ,  H04L12/729

Abstract: A method may include receiving a domain name system (DNS) query at a network device, where the DNS query may be associated with a traffic flow identified for rerouting through an alternative path utilizing an alternative network device instead of a default path. The method may also include rewriting the DNS query such that the DNS query is routed through the alternative network device along the alternative path and to a DNS server associated with the alternative path. The method may additionally include receiving a DNS response from the DNS server, where a resource identified in the DNS response may be based on the DNS query coming through the alternative network device.

公开(公告)号：US11722403B2

公开(公告)日：2023-08-08

申请号：US17062153

申请日：2020-10-02

Applicant: Cisco Technology, Inc.

Inventor： Robin James ,  Mithun Iyer ,  Himanshu Shah

IPC: H04L45/302 ,  H04L45/00 ,  H04L43/08 ,  H04L47/2425 ,  H04L45/12 ,  H04L45/125 ,  H04L61/4511 ,  H04L45/02 ,  H04L45/64

CPC classification number: H04L45/308 ,  H04L43/08 ,  H04L45/124 ,  H04L45/125 ,  H04L45/22 ,  H04L47/2433 ,  H04L61/4511 ,  H04L45/04 ,  H04L45/302 ,  H04L45/64

Abstract: A method may include receiving a domain name system (DNS) query at a network device, where the DNS query may be associated with a traffic flow identified for rerouting through an alternative path utilizing an alternative network device instead of a default path. The method may also include rewriting the DNS query such that the DNS query is routed through the alternative network device along the alternative path and to a DNS server associated with the alternative path. The method may additionally include receiving a DNS response from the DNS server, where a resource identified in the DNS response may be based on the DNS query coming through the alternative network device.

公开(公告)号：US11658898B2

公开(公告)日：2023-05-23

申请号：US16991400

申请日：2020-08-12

Applicant: Cisco Technology, Inc.

Inventor： Himanshu Shah ,  Murtuza Attarwala ,  Linus Aranha

IPC: H04L12/701 ,  H04L12/715 ,  H04L12/721 ,  H04L45/00 ,  H04L43/028 ,  H04L69/16 ,  H04L43/08 ,  H04L43/026 ,  H04L45/745 ,  H04L45/74 ,  H04L61/4511 ,  H04L45/302 ,  H04L45/125 ,  H04L45/64

CPC classification number: H04L45/22 ,  H04L43/026 ,  H04L43/028 ,  H04L43/08 ,  H04L45/74 ,  H04L45/745 ,  H04L61/4511 ,  H04L69/16 ,  H04L45/125 ,  H04L45/302 ,  H04L45/306 ,  H04L45/308 ,  H04L45/64

Abstract: A method may include identifying an address within a packet of a traffic flow associated with a network device. The method may also include comparing the address within the packet with a stored address, the stored address associated with a route for an alternative traffic path, where the alternative traffic path may be different from a default route of traffic passing through the network device. The method may additionally include, based on the address within the packet matching the stored address, routing the packet along the alternative traffic path instead of the default route of traffic.

公开(公告)号：US20200374215A1

公开(公告)日：2020-11-26

申请号：US16991400

申请日：2020-08-12

Applicant: Cisco Technology, Inc.

Inventor： Himanshu Shah ,  Murtuza Attarwala ,  Linus Aranha

IPC: H04L12/707 ,  H04L12/26 ,  H04L29/12 ,  H04L29/06 ,  H04L12/741

Abstract: A method may include identifying an address within a packet of a traffic flow associated with a network device. The method may also include comparing the address within the packet with a stored address, the stored address associated with a route for an alternative traffic path, where the alternative traffic path may be different from a default route of traffic passing through the network device. The method may additionally include, based on the address within the packet matching the stored address, routing the packet along the alternative traffic path instead of the default route of traffic.

公开(公告)号：US10826820B2

公开(公告)日：2020-11-03

申请号：US15591066

申请日：2017-05-09

Applicant: Cisco Technology, Inc.

Inventor： Robin James ,  Mithun Iyer ,  Himanshu Shah

IPC: H04L12/725 ,  H04L12/707 ,  H04L29/12 ,  H04L12/26 ,  H04L12/851 ,  H04L12/721 ,  H04L12/729 ,  H04L12/715

Abstract: A method may include receiving a domain name system (DNS) query at a network device, where the DNS query may be associated with a traffic flow identified for rerouting through an alternative path utilizing an alternative network device instead of a default path. The method may also include rewriting the DNS query such that the DNS query is routed through the alternative network device along the alternative path and to a DNS server associated with the alternative path. The method may additionally include receiving a DNS response from the DNS server, where a resource identified in the DNS response may be based on the DNS query coming through the alternative network device.

公开(公告)号：US10511507B2

公开(公告)日：2019-12-17

申请号：US15591063

申请日：2017-05-09

Applicant: Cisco Technology, Inc.

Inventor： Murtuza Attarwala ,  Lars Olof Stefan Olofsson ,  Himanshu Shah

IPC: H04L12/26 ,  H04L12/851 ,  H04L29/12 ,  H04L12/725 ,  H04L12/707 ,  H04L12/729 ,  H04L12/721 ,  H04L12/715

Abstract: A method of routing network traffic may include routing traffic from a local network device, through a remote network location, to a third party network resource along a first path. The method may also include determining a first ranking for the first path, and determining a second ranking for a second path from the local network device to the third party network resource along a second path, the second path excluding the remote network location. The method may additionally include, based on the second ranking exceeding the first ranking by a threshold amount, rerouting the traffic along the second path.

公开(公告)号：US20230362088A1

公开(公告)日：2023-11-09

申请号：US18352902

申请日：2023-07-14

Applicant: Cisco Technology, Inc.

Inventor： Robin James ,  Mithun Iyer ,  Himanshu Shah

IPC: H04L45/302 ,  H04L45/00 ,  H04L43/08 ,  H04L47/2425 ,  H04L45/12 ,  H04L45/125 ,  H04L61/4511

CPC classification number: H04L45/308 ,  H04L45/22 ,  H04L43/08 ,  H04L47/2433 ,  H04L45/124 ,  H04L45/125 ,  H04L61/4511 ,  H04L45/302 ,  H04L45/04

Abstract: A method may include receiving a domain name system (DNS) query at a network device, where the DNS query may be associated with a traffic flow identified for rerouting through an alternative path utilizing an alternative network device instead of a default path. The method may also include rewriting the DNS query such that the DNS query is routed through the alternative network device along the alternative path and to a DNS server associated with the alternative path. The method may additionally include receiving a DNS response from the DNS server, where a resource identified in the DNS response may be based on the DNS query coming through the alternative network device.

公开(公告)号：US10771375B2

公开(公告)日：2020-09-08

申请号：US15591065

申请日：2017-05-09

Applicant: Cisco Technology, Inc.

Inventor： Himanshu Shah ,  Murtuza Attarwala ,  Linus Aranha

IPC: H04L12/701 ,  H04L12/721 ,  H04L12/741 ,  H04L12/707 ,  H04L12/26 ,  H04L29/12 ,  H04L29/06 ,  H04L12/725 ,  H04L12/729 ,  H04L12/715

Abstract: A method may include identifying an address within a packet of a traffic flow associated with a network device. The method may also include comparing the address within the packet with a stored address, the stored address associated with a route for an alternative traffic path, where the alternative traffic path may be different from a default route of traffic passing through the network device. The method may additionally include, based on the address within the packet matching the stored address, routing the packet along the alternative traffic path instead of the default route of traffic.