公开(公告)号：US20200328976A1

公开(公告)日：2020-10-15

申请号：US16380287

申请日：2019-04-10

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Yaron Koral ,  Simon Tse ,  Steven A. Monetti ,  Tzuu-Yi Wang ,  Jennifer Rexford ,  Xiaoqi Chen ,  Shir Landau Feibish

IPC: H04L12/801 ,  H04L12/851 ,  H04L12/26 ,  H04L12/803 ,  H04L12/823

Abstract: Systems, methods, and apparatuses provide a scalable framework for analyzing queuing and transient congestion in network switches. The system reports which flows contributed to the queue buildup and enables direct per-packet action in the data plane to prevent transient congestion. The system may be configured to analyze queuing in legacy network switches.

公开(公告)号：US11171869B2

公开(公告)日：2021-11-09

申请号：US16380287

申请日：2019-04-10

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Yaron Koral ,  Simon Tse ,  Steven A. Monetti ,  Tzuu-Yi Wang ,  Jennifer Rexford ,  Xiaoqi Chen ,  Shir Landau Feibish

IPC: H04L1/00 ,  H04L12/801 ,  H04L12/851 ,  H04L12/26 ,  H04L12/803 ,  H04L12/823

Abstract: Systems, methods, and apparatuses provide a scalable framework for analyzing queuing and transient congestion in network switches. The system reports which flows contributed to the queue buildup and enables direct per-packet action in the data plane to prevent transient congestion. The system may be configured to analyze queuing in legacy network switches.

公开(公告)号：US20130182561A1

公开(公告)日：2013-07-18

申请号：US13787978

申请日：2013-03-07

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Dahai Xu ,  Robert Doverspike ,  David Johnson ,  Jennifer Rexford ,  Martin Suchara

IPC: H04L12/24

CPC classification number: H04L41/0654 ,  H04L45/24 ,  H04L45/28 ,  H04L47/125

Abstract: A resilient load balancing method uses fixed paths and a fixed path-splitting strategy to enable ingress routers to efficiently reroute traffic after a failure. An off-line management system computes a set of fixed paths and a set of splitting ratios for routing demand from ingress routers to egress routers, with sufficient capacity to meet demands under each failure scenario. That data is then used by the ingress router to reroute demand after observing a failure.

Abstract translation: 弹性负载平衡方法使用固定路径和固定路径分割策略，使入口路由器能够在故障后有效地重新路由流量。 离线管理系统计算一组固定路径和一组分割比，用于从入口路由器到出口路由器的路由需求，具有足够的容量以满足每个故障场景下的需求。 该数据然后由入口路由器在观察到故障后重新路由需求。

公开(公告)号：US11025519B2

公开(公告)日：2021-06-01

申请号：US16380484

申请日：2019-04-10

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Yaron Koral ,  Tuan Duong ,  Steven A. Monetti ,  Tzuu-Yi Wang ,  Simon Tse ,  Shir Landau Feibish ,  Jennifer Rexford ,  Xiaoqi Chen

IPC: H04L12/26

Abstract: Methods, systems, and computer-readable media for measuring packet delays are provided. An input port of a network device is tapped to duplicate an input packet stream having a first packet. An output port of the network device is tapped to duplicate an output packet stream including the first packet. The duplicated input packet stream and the duplicated output packet stream is transmitted to a programmable device. The first packet in the first input packet stream is matched to the first packet in the first output packet stream. An arrival time and a departure time for the first packet is measured. The difference between the departure time of the first packet and the arrival time of the first packet is determined and the value is reported to an external collector.

公开(公告)号：US20200328956A1

公开(公告)日：2020-10-15

申请号：US16380484

申请日：2019-04-10

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Yaron Koral ,  Tuan Duong ,  Steven A. Monetti ,  Tzuu-Yi Wang ,  Simon Tse ,  Shir Landau Feibish ,  Jennifer Rexford ,  Xiaoqi Chen

IPC: H04L12/26

Abstract: Methods, systems, and computer-readable media for measuring packet delays are provided. An input port of a network device is tapped to duplicate an input packet stream having a first packet. An output port of the network device is tapped to duplicate an output packet stream including the first packet. The duplicated input packet stream and the duplicated output packet stream is transmitted to a programmable device. The first packet in the first input packet stream is matched to the first packet in the first output packet stream. An arrival time and a departure time for the first packet is measured. The difference between the departure time of the first packet and the arrival time of the first packet is determined and the value is reported to an external collector.

公开(公告)号：US08611232B2

公开(公告)日：2013-12-17

申请号：US13787978

申请日：2013-03-07

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Dahai Xu ,  Robert Doverspike ,  David Johnson ,  Jennifer Rexford ,  Martin Suchara

IPC: H04L12/26

CPC classification number: H04L41/0654 ,  H04L45/24 ,  H04L45/28 ,  H04L47/125

Abstract: A resilient load balancing method uses fixed paths and a fixed path-splitting strategy to enable ingress routers to efficiently reroute traffic after a failure. An off-line management system computes a set of fixed paths and a set of splitting ratios for routing demand from ingress routers to egress routers, with sufficient capacity to meet demands under each failure scenario. That data is then used by the ingress router to reroute demand after observing a failure.