公开(公告)号：US20070064613A1

公开(公告)日：2007-03-22

申请号：US11594568

申请日：2006-11-08

申请人： Edward Qian ,  San-Qi Li ,  David Lu ,  Rupert Zhu ,  Yen Shei

发明人： Edward Qian ,  San-Qi Li ,  David Lu ,  Rupert Zhu ,  Yen Shei

IPC分类号： H04J3/14 ,  H04L12/56

CPC分类号： H04L45/3065 ,  H04L45/12

摘要： The subject matter described herein includes methods, systems, and computer program products for load balanced and symmetric SPF path computations for VoIP traffic engineering. One method includes advertising an output interface cost in a first direction over a first network segment between a source IP device and a destination IP device that is different from an output interface cost in advertised in a second direction over the first network segment. A plurality of available network paths between the source IP device and the destination IP device is identified. A path cost is calculated for each of the available network paths from the source IP device to the destination IP device. Calculating a path cost includes, for paths that include the first network segment, substituting the output interface cost advertised in the first direction with the output interface cost advertised in the second direction. The path costs are ranked based on the calculated costs. A lowest cost path is selected from the ranked paths. Both directions of a media session are assigned to the lowest cost path.

摘要翻译： 本文描述的主题包括用于VoIP流量工程的负载平衡和对称SPF路径计算的方法，系统和计算机程序产品。 一种方法包括在源IP设备和目的地IP设备之间的第一网段上向第一方向广告输出接口成本，所述第一网段与在第一网段上沿第二方向通告的输出接口成本不同。 识别源IP设备和目的IP设备之间的多个可用网络路径。 针对从源IP设备到目标IP设备的每个可用网络路径计算路径开销。 对于包含第一网段的路径，计算路径开销包括以第二方向通告的输出接口成本代替在第一方向上发布的输出接口成本。 路径成本根据计算的成本进行排名。 从排名的路径中选择最低成本路径。 媒体会话的两个方向被分配到最低成本路径。

公开(公告)号：US20070053300A1

公开(公告)日：2007-03-08

申请号：US11545788

申请日：2006-10-10

申请人： Rupert Zhu ,  David Lu ,  San-qi Li ,  Edward Qian ,  Yen Shei

发明人： Rupert Zhu ,  David Lu ,  San-qi Li ,  Edward Qian ,  Yen Shei

IPC分类号： H04J3/14 ,  H04L12/28

CPC分类号： H04L45/24 ,  H04L45/12 ,  H04L45/124 ,  H04L45/28

摘要： Methods, systems, and computer program products for multipath Shortest-Path-First (SPF) computations and distance-based interface selection for VoIP traffic are disclosed. According to one method, a multi-path router instance associated with a plurality of network interfaces in a source IP device is provided. A cost is assigned to each of a plurality of internal segments between the multi-path router instance and the network interfaces associated with the multi-path router instance. An aggregate cost is calculated for each of a plurality of traffic paths originating at the multi-path router instance in the source IP device and extending through each of the network interfaces associated with the multi-path router instance to a destination IP device in the network. A list of IP paths is generated, and the paths in the list are ranked based on the calculated cost. Traffic is sent from the source IP device over at least one of the paths in the list. The path costs and rankings are updated in response to segment cost changes.

摘要翻译： 用于多路径的方法，系统和计算机程序产品公开了针对VoIP业务的最短路径优先（SPF）计算和基于距离的接口选择。 根据一种方法，提供与源IP设备中的多个网络接口相关联的多路径路由器实例。 在多路径路由器实例和与多路径路由器实例相关联的网络接口之间的多个内部段中的每一个分配成本。 为源IP设备中的多路径路由器实例发起的多个业务路径中的每一个计算总成本，并且通过与多路径路由器实例相关联的每个网络接口延伸到网络中的目的地IP设备 。 生成IP路径列表，并根据计算出的成本对列表中的路径进行排名。 通过列表中的至少一个路径从源IP设备发送流量。 路径成本和排名根据分部成本变化进行更新。

公开(公告)号：US20050074017A1

公开(公告)日：2005-04-07

申请号：US10676233

申请日：2003-10-01

申请人： Edward Qian ,  David Lu ,  San-Qi Li ,  Yen Shei ,  Weijun Lee

发明人： Edward Qian ,  David Lu ,  San-Qi Li ,  Yen Shei ,  Weijun Lee

IPC分类号： G06F20060101 ,  H04L12/66

CPC分类号： H04M3/2263 ,  H04L65/1043 ,  H04M7/121 ,  H04M7/1255

摘要： Methods and systems for per-session dynamic management of media gateway resources are disclosed. According to one method, the logical and physical resources in a media gateway are divided and dynamically managed at the Transport Layer (i.e. OSI Layer 4), which results in finer granularity than managing such resources statically at the Data Link Layer (i.e. OSI Layer 2) or Network Layer (i.e. OSI Layer 3). Voice-processing resources provided by voice server cards may be pooled into a common pool available to all external networks. For each new call/session, the dynamic resource manager of the media gateway dynamically allocates a voice chip from the pooled voice processing resources, and assigns a logical resource identifier (e.g. a local IP and local UDP pair) to the session. When a network interface card receives incoming voice packets, it checks the destination IP and UDP and optionally the source IP and UDP to find out, and forward voice packets to, the voice chip assigned to the session.

摘要翻译： 披露了媒体网关资源的每会话动态管理的方法和系统。 根据一种方法，媒体网关中的逻辑和物理资源在传输层（即OSI层4）处被划分和动态管理，这导致比在数据链路层静态地管理这样的资源更精细的粒度（即OSI层2 ）或网络层（即OSI第3层）。 由语音服务器卡提供的语音处理资源可以汇集到可用于所有外部网络的公共池中。 对于每个新的呼叫/会话，媒体网关的动态资源管理器从池化的语音处理资源动态地分配语音芯片，并且向会话分配逻辑资源标识符（例如本地IP和本地UDP对）。 当网络接口卡接收到传入的语音数据包时，它检查目标IP和UDP以及可选的源IP和UDP来查找分配给会话的语音芯片的语音数据包。

公开(公告)号：US20050073998A1

公开(公告)日：2005-04-07

申请号：US10943513

申请日：2004-09-17

申请人： Rupert Zhu ,  David Lu ,  San-Qi Li ,  Edward Qian

发明人： Rupert Zhu ,  David Lu ,  San-Qi Li ,  Edward Qian

IPC分类号： H04J3/14 ,  H04L1/22 ,  H04L12/28 ,  H04L12/56 ,  H04L12/66 ,  H04L29/06

CPC分类号： H04L65/104 ,  H04L29/06027 ,  H04L45/00 ,  H04L45/22 ,  H04L65/103 ,  H04L65/1043

摘要： Method, systems, and computer program products for voice over IP (VoIP) traffic engineering and path resilience using media gateway and associated next-hop routers are provided. In one example, a media gateway includes multiple media processing hosts and a multiple network interfaces separate from the media processing hosts. At least one of the media processing hosts is reachable via at least two of the network interfaces. Next-hop routers associated with the network interfaces advertise reachability information regarding the media processing hosts to routers in the network. The next-hop routers also participate in network routing protocols to form multiple paths between the media gateway and a remote media gateway. Costs may be assigned to associations between the media processing hosts and the next-hop routers for traffic engineering purposes.

摘要翻译： 提供了基于IP语音（VoIP）流量工程和使用媒体网关和相关联的下一跳路由器的路径恢复能力的方法，系统和计算机程序产品。 在一个示例中，媒体网关包括多个媒体处理主机和与媒体处理主机分开的多个网络接口。 至少一个媒体处理主机可通过至少两个网络接口访问。 与网络接口相关联的下一跳路由器将关于媒体处理主机的可达性信息广播到网络中的路由器。 下一跳路由器还参与网络路由协议，以在媒体网关和远程媒体网关之间形成多条路径。 可以将成本分配给媒体处理主机和下一跳路由器之间的用于流量工程目的的关联。

公开(公告)号：US20050083844A1

公开(公告)日：2005-04-21

申请号：US10943275

申请日：2004-09-17

申请人： Rupert Zhu ,  David Lu ,  San-Qi Li ,  Edward Qian

发明人： Rupert Zhu ,  David Lu ,  San-Qi Li ,  Edward Qian

IPC分类号： H04J3/14 ,  H04L1/22 ,  H04L12/28 ,  H04L12/56 ,  H04L12/66 ,  H04L29/06

CPC分类号： H04L45/00 ,  H04L29/06027 ,  H04L41/0893 ,  H04L43/0852 ,  H04L45/04 ,  H04L45/123 ,  H04L45/22 ,  H04L45/64 ,  H04L65/103 ,  H04L65/104 ,  H04L65/1043

摘要： Methods and systems for providing voice over IP traffic engineering and path resilience using a network-aware media gateway are provided. In a media gateway, voice over IP hosts are assigned a first set of IP addresses. Network interfaces in the media gateway are assigned a second set of IP addresses that differ from the first set of IP addresses. Per-interface routers advertise reachability information from at least one of the voice over IP hosts via multiple interfaces and participate in network routing protocols to generate per interface routing tables. Voice over IP path lists may be generated based on the per interface routing tables. Internal costs may be assigned to the associations between the voice over IP hosts and the interfaces based on traffic engineering criteria.

摘要翻译： 提供了使用网络感知媒体网关来提供IP流量工程语音和路径恢复能力的方法和系统。 在媒体网关中，IP主机上的语音分配了第一组IP地址。 媒体网关中的网络接口被分配与第一组IP地址不同的第二组IP地址。 每接口路由器通过多个接口从至少一个IP语音主机发送可达性信息，并参与网络路由协议以生成每个接口路由表。 IP路由列表可以基于每个接口路由表生成。 可以根据流量工程标准将内部成本分配给IP语音主机和接口之间的关联。

公开(公告)号：US20070183314A1

公开(公告)日：2007-08-09

申请号：US11702009

申请日：2007-02-02

申请人： San-qi Li ,  Edward Qian ,  David Lu

发明人： San-qi Li ,  Edward Qian ,  David Lu

IPC分类号： H04J3/14

CPC分类号： H04L12/4641 ,  H04L12/467 ,  H04L43/0811 ,  H04L45/22 ,  H04L45/28

摘要： Methods, systems, and computer program products for implementing link redundancy in a media gateway are provided according to one method, a media gateway link protection group is provisioned to associate with a common VLAN a common virtual local area network (VLAN) primary and secondary links associated with at least one line card in a media gateway. The primary and secondary links are connected using a cross connection between ports associated with the at least one line card. At run time, traffic is automatically bridged between the primary and secondary links using the common VLAN and the cross connection.

摘要翻译： 根据一种方法提供用于实现媒体网关中的链路冗余的方法，系统和计算机程序产品，媒体网关链路保护组被提供以与公共VLAN相关联，所述公共虚拟局域网（VLAN）主要和辅助链路 与媒体网关中的至少一个线路卡相关联。 使用与至少一个线路卡相关联的端口之间的交叉连接来连接主要和次要链路。 在运行时，使用公共VLAN和交叉连接，在主链路和辅助链路之间自动桥接流量。

公开(公告)号：US06359858B1

公开(公告)日：2002-03-19

申请号：US09324948

申请日：1999-06-03

申请人： Alexander Smith ,  Masahiro Shinbashi ,  Edward Qian ,  Daniel Joseph Mieczkowski ,  David Chen

发明人： Alexander Smith ,  Masahiro Shinbashi ,  Edward Qian ,  Daniel Joseph Mieczkowski ,  David Chen

IPC分类号： G06F1516

CPC分类号： H04L49/3081 ,  H04J2203/006 ,  H04L49/30 ,  H04L49/552 ,  H04L2012/5627 ,  H04Q11/0478

摘要： An apparatus and method for switching redundancy control which provides fast switching from a malfunctioning component to a redundant component with minimum data flow interruption for both transmitted and received data. The redundancy control system having an APS (Automatic Switching Protection) Hub, at least a working and a redundant tributary card, a bridge to provide identical traffic to the working and redundant tributary cards, a working and a redundant STM switching fabric, selectors within the working and redundant STM switching fabrics for selecting the traffic from the working tributary card to further process, a working and a redundant ATM switching fabric, a working and a redundant ATM processor and ATM selectors for selecting traffic needing cell switching from the working STM switching fabric to process further. The system is capable of monitoring itself to detect failures and the APS Hub is outfitted so as to become aware of detected failures and initiate a switch in the appropriate selectors or ATM selectors so as to change the traffic being further processed from the failed working component to the redundant component.

公开(公告)号：US06700868B2

公开(公告)日：2004-03-02

申请号：US10067601

申请日：2002-02-04

申请人： Alexander Smith ,  Masahiro Shinbashi ,  Edward Qian ,  Daniel Joseph Mieczkowski ,  David Chen

发明人： Alexander Smith ,  Masahiro Shinbashi ,  Edward Qian ,  Daniel Joseph Mieczkowski ,  David Chen

IPC分类号： H04L1228

CPC分类号： H04L49/3081 ,  H04J2203/006 ,  H04L49/30 ,  H04L49/552 ,  H04L2012/5627 ,  H04Q11/0478

摘要： An apparatus and method for switching redundancy control which provides fast switching from a malfunctioning component to a redundant component with minimum data flow interruption for both transmitted and received data. The redundancy control system having an APS (Automatic Protection Switching) Hub, at least a working and a redundant tributary card, a bridge to provide identical traffic to the working and redundant tributary cards, a working and a redundant STM switching fabric, selectors within the working and redundant STM switching fabrics for selecting the traffic from the working tributary card to further process, a working and a redundant ATM switching fabric, a working and a redundant ATM processor and ATM selectors for selecting traffic needing cell switching from the working STM switching fabric to process further. The system is capable of monitoring itself to detect failures and the APS Hub is outfitted so as to become aware of detected failures and initiate a switch in the appropriate selectors or ATM selectors so as to change the traffic being further processed from the failed working component to the redundant component.

摘要翻译： 一种用于切换冗余控制的装置和方法，其提供从故障组件到冗余组件的快速切换，对于发送和接收的数据都具有最小的数据流中断。 具有APS（自动保护切换）集线器，至少一个工作和冗余支路卡的冗余控制系统，为工作和冗余辅助卡提供相同业务的桥，工作和冗余STM交换结构， 工作和冗余的STM交换结构，用于选择来自工作支流卡的流量以进一步处理，工作和冗余ATM交换结构，工作和冗余ATM处理器和ATM选择器，用于从工作的STM交换结构中选择需要小区切换的业务 进一步处理。 该系统能够监控自身以检测故障，并且配备APS Hub，以便意识到检测到的故障，并启动相应选择器或ATM选择器中的切换，以便将从故障工作组件进一步处理的流量更改为 冗余组件。