公开(公告)号：US09253250B2

公开(公告)日：2016-02-02

申请号：US13839764

申请日：2013-03-15

Applicant: Cisco Technology, Inc.

Inventor： Rajiv Asati ,  Ijsbrand Wijnands

IPC: H04L29/08 ,  H04L12/703 ,  H04L12/761 ,  H04L12/707 ,  H04L12/753 ,  H04L12/723

CPC classification number: H04L67/10 ,  H04L45/16 ,  H04L45/22 ,  H04L45/28 ,  H04L45/48 ,  H04L45/50

Abstract: In one embodiment, a merge process can determine a primary tree among nodes in a communication network, determine a backup tree for a protected segment of the primary tree, the backup tree having at least a portion of overlap with the primary tree, and stitch the backup tree to the primary tree for each node of the portion of overlap such that when a message is transmitted for a group according to the backup tree, each node of the portion of overlap receives a single instance of the message of the group.

Abstract translation: 在一个实施例中，合并过程可以确定通信网络中的节点之间的主树，确定主树的受保护段的备份树，备份树具有与主树重叠的至少一部分，并且将 备份树到重叠部分的每个节点的主树，使得当根据备份树发送用于组的消息时，重叠部分的每个节点接收该组的消息的单个实例。

公开(公告)号：US09253172B2

公开(公告)日：2016-02-02

申请号：US14681602

申请日：2015-04-08

Applicant: Cisco Technology, Inc.

Inventor： Aamer S. Akhter ,  Rajiv Asati ,  Brian Weis ,  Mohamed Khalid

IPC: H04L29/06 ,  G06F15/16 ,  H04L9/08 ,  H04L29/12

CPC classification number: H04L63/065 ,  H04L9/0833 ,  H04L9/0891 ,  H04L61/2076 ,  H04L63/0272 ,  H04L63/0428

Abstract: In an embodiment, a method comprises obtaining a second network address at a computer node, which has been already associated with a first network address and provided first keying information; sending, to a key server computer, an update message that comprises both the first network address and the second network address; using the first keying information to encrypt messages that the computer node sends from the second network address to one or more other members of a group.

公开(公告)号：US20150180726A1

公开(公告)日：2015-06-25

申请号：US14632474

申请日：2015-02-26

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Rajiv Asati ,  Alon Bernstein ,  John T. Chapman

IPC: H04L12/24 ,  H04L12/28 ,  H04B10/27

CPC classification number: H04L41/12 ,  H04B3/46 ,  H04B10/27 ,  H04L12/2801 ,  H04L41/0853

Abstract: A method in an example embodiment can include polling a first cable modem in a cable network and receiving a first response message from the first cable modem identifying a downstream frequency detected by the first cable modem. The method further includes determining the downstream frequency is split between at least two fiber nodes and determining a cable modem termination system (CMTS) service group topology, where the topology includes the at least two fiber nodes. In specific embodiments, determining that the downstream frequency is split is based on at least the first response message from the first cable modem and a second response message from a second cable modem. In more specific embodiments, the method includes constructing a hybrid fiber-coaxial (HFC) topology map of the cable network based on at least the first and second response messages, where the HFC topology map indicates the CMTS service group topology.

Abstract translation: 示例实施例中的方法可以包括轮询有线网络中的第一电缆调制解调器，并且从第一电缆调制解调器接收识别第一电缆调制解调器检测到的下行频率的第一响应消息。 该方法还包括确定下行频率在至少两个光纤节点之间被分割并且确定电缆调制解调器终端系统（CMTS）服务组拓扑，其中拓扑包括至少两个光纤节点。 在具体实施例中，确定下行频率被拆分基于至少来自第一电缆调制解调器的第一响应消息和来自第二电缆调制解调器的第二响应消息。 在更具体的实施例中，该方法包括至少基于第一和第二响应消息来构建有线网络的混合光纤同轴（HFC）拓扑图，其中HFC拓扑图指示CMTS服务组拓扑。