公开(公告)号：US11563686B2

公开(公告)日：2023-01-24

申请号：US17122014

申请日：2020-12-15

Applicant: Cisco Technology Inc.

Inventor： Changhong Shen ,  Hongbo Xia ,  Xiao-Rong Wang ,  Yin Wang ,  Lulu Wang

IPC: H04L12/46 ,  H04L12/26 ,  H04L12/801 ,  H04L12/851 ,  H04L47/12 ,  H04L43/16 ,  H04L47/24

Abstract: According to certain embodiments, a system comprises one or more processors and one or more computer-readable non-transitory storage media comprising instructions that, when executed by the one or more processors, cause one or more components of the system to perform operations. The operations comprise sending data from a hub to a spoke and receiving feedback from the spoke at the hub. The feedback is based on at least one of bandwidth utilization or occurrence of a congestion state detected by the spoke. The operations further comprise adjusting a shaper rate of an adaptive Quality of Service (QoS) shaper based at least in part on the feedback received from the spoke.

公开(公告)号：US20240056373A1

公开(公告)日：2024-02-15

申请号：US18099104

申请日：2023-01-19

Applicant: Cisco Technology, Inc.

Inventor： Jianda Liu ,  Xiao-Rong Wang ,  Hongbo Xia ,  Jiayi You ,  Yu Zhang

IPC: H04L43/10 ,  H04L43/0876

CPC classification number: H04L43/10 ,  H04L43/0876

Abstract: Techniques and architecture are described for tracking flows of packets in a network using a packet color marking scheme for obtaining network end-to-end traffic flow metrics in the network. In particular, in configurations, a user may be prompted to specify a site and a virtual private network (VPN) at which to start a trace for packet flows using a coloring marking scheme within the network. Given the VPN and the site, it is possible to monitor interested packet flows and apply metadata, e.g., colors, on flow packets. Remote wide area network (e.g., software defined WAN (SD-WAN)) routers receiving the packets with metadata may automatically trace the same flow and apply the same metadata to a next hop router. Hence, an end-to-end network path may be discovered.

公开(公告)号：US11190434B2

公开(公告)日：2021-11-30

申请号：US16819940

申请日：2020-03-16

Applicant: Cisco Technology Inc.

Inventor： Changhong Shen ,  Hongbo Xia ,  Xiao-Rong Wang ,  Yu Zhang

IPC: H04L12/26

Abstract: The present disclosure is directed to determining bandwidth capacity in a WAN path and includes one or more processors and one or more computer-readable non-transitory storage media comprising instructions that, when executed by the one or more processors, cause one or more components of the system to perform operations including, selecting a SD-WAN path for which to determine bandwidth capacity, wherein the path is associated with a Quality of Service (QoS) shaper having a pre-determined shaper rate, incrementally increasing a test load applied on the selected path, wherein the test load is applied concurrently with existing user traffic, calculating a performance score for the path after each increase in the test load, determining a performance of the path based on the calculated performance score, and updating the shaper rate of the QoS shaper based on the performance of the path.

公开(公告)号：US20210288898A1

公开(公告)日：2021-09-16

申请号：US16819940

申请日：2020-03-16

Applicant: Cisco Technology Inc.

Inventor： Changhong Shen ,  Hongbo Xia ,  Xiao-Rong Wang ,  Yu Zhang

IPC: H04L12/26

Abstract: The present disclosure is directed to determining bandwidth capacity in a WAN path and includes one or more processors and one or more computer-readable non-transitory storage media comprising instructions that, when executed by the one or more processors, cause one or more components of the system to perform operations including, selecting a SD-WAN path for which to determine bandwidth capacity, wherein the path is associated with a Quality of Service (QoS) shaper having a pre-determined shaper rate, incrementally increasing a test load applied on the selected path, wherein the test load is applied concurrently with existing user traffic, calculating a performance score for the path after each increase in the test load, determining a performance of the path based on the calculated performance score, and updating the shaper rate of the QoS shaper based on the performance of the path.