公开(公告)号：US08649370B2

公开(公告)日：2014-02-11

申请号：US11749829

申请日：2007-05-17

Applicant: Gustav Karl Larsson ,  Satish Mysore Gopalakrishna ,  Goran Bjelcevic ,  Neena Aluri

Inventor： Gustav Karl Larsson ,  Satish Mysore Gopalakrishna ,  Goran Bjelcevic ,  Neena Aluri

IPC: G01R31/06 ,  H04L12/50

CPC classification number: H04L49/254 ,  H04L49/1515 ,  H04L49/50

Abstract: The present invention provides systems and methods for programming connections through a multi-stage switch fabric. The present invention utilizes load-balancing, blocking recovery, background rebalancing, and rollback algorithms to select and manage connection balance on center stage switches in the multi-stage switch fabric for new and modified connections. The load-balancing algorithm attempts to spread the multi-connection slices across center stage switches as evenly as possible, to increase the probability that future multi-connection slices can be added without needing to rearrange existing slices. Advantageously, the present invention is efficient by making the best possible local decision for one multi-connection slice at a time, without considering other multi-connection slices that may also need center switch assignments. Additionally blocking recovery, rollback and background rebalancing features are also supported.

Abstract translation: 本发明提供了用于通过多级交换结构编程连接的系统和方法。 本发明利用负载平衡，阻塞恢复，后台重新平衡和回滚算法来选择和管理多级交换机结构中的中心级交换机的连接平衡，用于新的和修改的连接。 负载平衡算法尝试尽可能均匀地扩展跨越中心级交换机的多连接分片，以增加未来多连接分片可以被添加而不需要重新排列现有分片的概率。 有利地，本发明通过对一个多连接切片进行一次最佳可能的本地决定是有效的，而不考虑也可能需要中心切换分配的其他多连接切片。 此外还支持阻止恢复，回滚和背景重新平衡功能。

公开(公告)号：US20080285449A1

公开(公告)日：2008-11-20

申请号：US11749829

申请日：2007-05-17

Applicant: Gustav Karl Larsson ,  Satish Mysore Gopalakrishna ,  Goran Bjelcevic ,  Neena Aluri

Inventor： Gustav Karl Larsson ,  Satish Mysore Gopalakrishna ,  Goran Bjelcevic ,  Neena Aluri

IPC: H04J3/14 ,  H04J14/00

CPC classification number: H04L49/254 ,  H04L49/1515 ,  H04L49/50

Abstract: The present invention provides systems and methods for programming connections through a multi-stage switch fabric. The present invention utilizes load-balancing, blocking recovery, background rebalancing, and rollback algorithms to select and manage connection balance on center stage switches in the multi-stage switch fabric for new and modified connections. The load-balancing algorithm attempts to spread the multi-connection slices across center stage switches as evenly as possible, to increase the probability that future multi-connection slices can be added without needing to rearrange existing slices. Advantageously, the present invention is efficient by making the best possible local decision for one multi-connection slice at a time, without considering other multi-connection slices that may also need center switch assignments. Additionally blocking recovery, rollback and background rebalancing features are also supported.

Abstract translation: 本发明提供了用于通过多级交换结构编程连接的系统和方法。 本发明利用负载平衡，阻塞恢复，后台重新平衡和回滚算法来选择和管理多级交换机结构中的中心级交换机的连接平衡，用于新的和修改的连接。 负载平衡算法尝试尽可能均匀地扩展跨越中心级交换机的多连接分片，以增加未来多连接分片可以被添加而不需要重新排列现有分片的概率。 有利地，本发明通过对一个多连接切片进行一次最佳可能的本地决定是有效的，而不考虑也可能需要中心切换分配的其他多连接切片。 此外还支持阻止恢复，回滚和背景重新平衡功能。

公开(公告)号：US09148345B2

公开(公告)日：2015-09-29

申请号：US13351020

申请日：2012-01-16

Applicant: Abhishek Chaudhary ,  Gustav Karl Larsson ,  Jonathan T. Sewter ,  Feng Ling ,  Michael J. Wingrove

Inventor： Abhishek Chaudhary ,  Gustav Karl Larsson ,  Jonathan T. Sewter ,  Feng Ling ,  Michael J. Wingrove

IPC: G01R31/08 ,  H04L12/24 ,  H04L12/26

CPC classification number: H04L41/0896 ,  H04L43/0811 ,  H04L43/0829

Abstract: A system includes a plurality of modules, a backplane communicatively coupled to the plurality of modules, a plurality of links defined between the plurality of modules over the backplane, and a link management system configured to dynamically manage parameters associated with each of the plurality of links. A link management method includes, for a system, defining a codebook for each module, device, and interconnect in the system, the codebook includes data describing physical link topologies and configuration parameters associated therewith, for initializing a link in the system, obtaining appropriate codebooks for each segment in the link, calculating an overall link loss for the link based on data in the appropriate codebooks, and obtaining configuration parameters for the link based on the overall link loss.

Abstract translation: 系统包括多个模块，通信地耦合到多个模块的背板，在背板之间在多个模块之间定义的多个链路，以及链路管理系统，被配置为动态地管理与多个链路中的每一个相关联的参数 。 链路管理方法包括：对于系统，为系统中的每个模块，设备和互连定义码本，码本包括描述与之相关联的物理链路拓扑和配置参数的数据，用于初始化系统中的链路，获得适当的码本 对于链路中的每个段，基于适当的码本中的数据计算链路的总链路损耗，并且基于整个链路损耗获得链路的配置参数。

公开(公告)号：US08953948B2

公开(公告)日：2015-02-10

申请号：US13302791

申请日：2011-11-22

Applicant: Hongxing Meng ,  Abhishek Chaudhary ,  Gustav Karl Larsson ,  Saravanan Purushothaman

Inventor： Hongxing Meng ,  Abhishek Chaudhary ,  Gustav Karl Larsson ,  Saravanan Purushothaman

IPC: H04B10/00 ,  H04J3/06 ,  H04J3/16

CPC classification number: H04J3/0682 ,  H04J3/1652 ,  H04J2203/006

Abstract: The present disclosure provides to Optical Transport Network (OTN_ synchronization systems and methods that maintain proper sequential ordering of events at nodes which may be utilized in performing root cause analysis or diagnosing network performance. In an exemplary embodiment, the systems and methods utilize functionality incorporated into OTN providing a cost effective and standards-based approach to nodal synchronization. Once synchronized, network events are logged with an appropriate timestamp enabling a determination of a sequential order of network events can be determined. Further, the node timestamps may be synchronized, with microsecond or even sub-microsecond of precession which is critical in diagnosing network failures or slow traffic recovery.

Abstract translation: 本公开提供了一种光传输网络（OTN_同步系统和方法，其保持节点处的事件的适当顺序排序，其可以用于执行根本原因分析或诊断网络性能。在示例性实施例中，系统和方法利用并入 OTN提供了节省成本和基于标准的节点同步方法，一旦同步，就可以使用适当的时间戳记录网络事件，从而可以确定网络事件的顺序顺序，此外，节点时间戳可以与微秒同步 甚至亚微秒的进动，这对诊断网络故障或缓慢的流量恢复至关重要。

公开(公告)号：US20130129345A1

公开(公告)日：2013-05-23

申请号：US13302791

申请日：2011-11-22

Applicant: Hongxing MENG ,  Abhishek CHAUDHARY ,  Gustav Karl LARSSON ,  Saravanan PURUSHOTHAMAN

Inventor： Hongxing MENG ,  Abhishek CHAUDHARY ,  Gustav Karl LARSSON ,  Saravanan PURUSHOTHAMAN

IPC: H04B10/08

CPC classification number: H04J3/0682 ,  H04J3/1652 ,  H04J2203/006

Abstract: The present disclosure provides to Optical Transport Network (OTN_ synchronization systems and methods that maintain proper sequential ordering of events at nodes which may be utilized in performing root cause analysis or diagnosing network performance. In an exemplary embodiment, the systems and methods utilize functionality incorporated into OTN providing a cost effective and standards-based approach to nodal synchronization. Once synchronized, network events are logged with an appropriate timestamp enabling a determination of a sequential order of network events can be determined. Further, the node timestamps may be synchronized, with microsecond or even sub-microsecond of precession which is critical in diagnosing network failures or slow traffic recovery.

Abstract translation: 本公开提供了一种光传输网络（OTN_同步系统和方法，其保持节点处的事件的适当顺序排序，其可以用于执行根本原因分析或诊断网络性能。在示例性实施例中，系统和方法利用并入 OTN提供了节省成本和基于标准的节点同步方法，一旦同步，就可以使用适当的时间戳记录网络事件，从而可以确定网络事件的顺序顺序，此外，节点时间戳可以与微秒同步 甚至亚微秒的进动，这对诊断网络故障或缓慢的流量恢复至关重要。

公开(公告)号：US20130182585A1

公开(公告)日：2013-07-18

申请号：US13351020

申请日：2012-01-16

Applicant: Abhishek Chaudhary ,  Gustav Karl Larsson ,  Jonathan T. Sewter ,  Feng Ling ,  Michael J. Wingrove

Inventor： Abhishek Chaudhary ,  Gustav Karl Larsson ,  Jonathan T. Sewter ,  Feng Ling ,  Michael J. Wingrove

IPC: H04L12/28 ,  H04L12/26 ,  H04L12/56

CPC classification number: H04L41/0896 ,  H04L43/0811 ,  H04L43/0829

Abstract: A system includes a plurality of modules, a backplane communicatively coupled to the plurality of modules, a plurality of links defined between the plurality of modules over the backplane, and a link management system configured to dynamically manage parameters associated with each of the plurality of links A link management method includes, for a system, defining a codebook for each module, device, and interconnect in the system, the codebook includes data describing physical link topologies and configuration parameters associated therewith, for initializing a link in the system, obtaining appropriate codebooks for each segment in the link, calculating an overall link loss for the link based on data in the appropriate codebooks, and obtaining configuration parameters for the link based on the overall link loss.

Abstract translation: 系统包括多个模块，通信地耦合到多个模块的背板，在背板之间在多个模块之间定义的多个链路，以及链路管理系统，被配置为动态地管理与多个链路中的每一个相关联的参数 链路管理方法包括：对于系统，为系统中的每个模块，设备和互连定义码本，码本包括描述与之相关联的物理链路拓扑和配置参数的数据，用于初始化系统中的链路，获得适当的码本 对于链路中的每个段，基于适当的码本中的数据计算链路的总链路损耗，并且基于整个链路损耗获得链路的配置参数。