公开(公告)号：US20090190610A1

公开(公告)日：2009-07-30

申请号：US12010489

申请日：2008-01-25

申请人： Shafiq Pirbhai ,  Neil Hart

发明人： Shafiq Pirbhai ,  Neil Hart

IPC分类号： H04Q11/04 ,  H04L12/56

CPC分类号： H04L12/2852 ,  H04L12/4633

摘要： A method of circuit emulation over an IP interworking VLL, and related system, the method including one or more of the following: configuring a circuit emulation port with one or more logical interfaces; configuring one or more channels on each of the one or more logical interfaces; configuring the one or more channels with a destination IP address; configuring the one or more channels with a destination UDP port number; specifying an Ipipe VLL for each of the one or more channels; determining TDM traffic to go onto the specified Ipipe; packetizing TDM traffic; encapsulating the TDM traffic with encapsulation; inserting one or more packets of the TDM traffic into an IP interworking VLL; sending the one or more packets through the Ipipe; stripping the encapsulation from the one or more packets of the TDM traffic; and forwarding the one or more packets to a destination.

摘要翻译： 一种通过IP互通VLL的电路仿真方法及相关系统，所述方法包括以下一个或多个：配置具有一个或多个逻辑接口的电路仿真端口; 在所述一个或多个逻辑接口中的每一个上配置一个或多个信道; 用目的地IP地址配置一个或多个频道; 使用目的地UDP端口号配置一个或多个信道; 为所述一个或多个通道中的每一个指定Ipipe VLL; 确定TDM流量以进入指定的Ipipe; 打包TDM流量; 封装TDM业务; 将TDM业务的一个或多个分组插入到IP互通VLL中; 通过Ipipe发送一个或多个数据包; 从TDM业务的一个或多个分组中消除封装; 并将一个或多个分组转发到目的地。

公开(公告)号：US20060164979A1

公开(公告)日：2006-07-27

申请号：US11041561

申请日：2005-01-24

申请人： Shafiq Pirbhai ,  Neil Hart ,  Shawn McAllister

发明人： Shafiq Pirbhai ,  Neil Hart ,  Shawn McAllister

IPC分类号： H04L12/26 ,  H04J1/16 ,  H04J3/14 ,  H04L1/00

CPC分类号： H04L47/10 ,  H04L43/02 ,  H04L43/0894 ,  H04L47/11 ,  H04L47/2441 ,  H04L47/263 ,  H04L47/30 ,  H04L47/326 ,  H04L47/50 ,  H04L2012/5679 ,  H04L2012/5681 ,  Y02D50/10

摘要： Systems and methods of monitoring a communication traffic transfer rate control mechanism are provided. The traffic transfer rate control mechanism may control a rate of transfer of communication traffic from a first communication traffic management device to a second communication traffic management device, for example. A communication traffic storage history, which is indicative of an effect of the transfer rate control mechanism, is compiled by determining amounts of communication traffic stored in at least one communication traffic queue of at least one of the communication traffic management devices, at each of a number of monitor times. An indication of the determined amounts of communication traffic is provided, and may be analyzed to determine whether the transfer rate control mechanism actually achieves a desired effect. The transfer rate control mechanism or control parameters thereof may then be adjusted if the desired effect is not currently being achieved.

公开(公告)号：US07751408B2

公开(公告)日：2010-07-06

申请号：US12010489

申请日：2008-01-25

申请人： Shafiq Pirbhai ,  Neil Hart

发明人： Shafiq Pirbhai ,  Neil Hart

IPC分类号： H04L12/28

CPC分类号： H04L12/2852 ,  H04L12/4633

摘要： A method of circuit emulation over an IP interworking VLL, and related system, the method including one or more of the following: configuring a circuit emulation port with one or more logical interfaces; configuring one or more channels on each of the one or more logical interfaces; configuring the one or more channels with a destination IP address; configuring the one or more channels with a destination UDP port number; specifying an Ipipe VLL for each of the one or more channels; determining TDM traffic to go onto the specified Ipipe; packetizing TDM traffic; encapsulating the TDM traffic with encapsulation; inserting one or more packets of the TDM traffic into an IP interworking VLL; sending the one or more packets through the Ipipe; stripping the encapsulation from the one or more packets of the TDM traffic; and forwarding the one or more packets to a destination.

摘要翻译： 一种通过IP互通VLL的电路仿真方法及相关系统，所述方法包括以下一个或多个：配置具有一个或多个逻辑接口的电路仿真端口; 在所述一个或多个逻辑接口中的每一个上配置一个或多个信道; 用目的地IP地址配置一个或多个频道; 使用目的地UDP端口号配置一个或多个信道; 为所述一个或多个通道中的每一个指定Ipipe VLL; 确定TDM流量去指定的Ipipe; 打包TDM流量; 封装TDM业务; 将TDM业务的一个或多个分组插入到IP互通VLL中; 通过Ipipe发送一个或多个数据包; 从TDM业务的一个或多个分组中消除封装; 并将一个或多个分组转发到目的地。

公开(公告)号：US20080304476A1

公开(公告)日：2008-12-11

申请号：US11760355

申请日：2007-06-08

申请人： Shafiq Pirbhai ,  Francois L. Bouchard ,  Robin Jeffrey Park ,  Neil Hart

发明人： Shafiq Pirbhai ,  Francois L. Bouchard ,  Robin Jeffrey Park ,  Neil Hart

IPC分类号： H04L12/66

CPC分类号： H04L12/66

摘要： A method and apparatus are provided for providing CES using both Ethernet and MPLS networks. TDM data is packetized and Ethernet encapsulated, and then MPLS encapsulated. Following insertion into an MPLS core network, the packet is routed to a destination MPLS router using MPLS routing. The MPLS encapsulation is then removed, and the resulting Ethernet frame inserted into a destination Ethernet network. The Ethernet frame is routed to a destination Ethernet port using Ethernet routing. The TDM data is extracted, and inserted into the appropriate TDM channel. The invention allows inexpensive Ethernet equipment to be used at the boundary with the TDM network, and a reliable MPLS network with its QoS functionality to be used for any long-haul part of the CES.

摘要翻译： 提供了一种用于使用以太网和MPLS网络提供CES的方法和装置。 TDM数据被封装，以太网封装，然后MPLS封装。 插入MPLS核心网络后，使用MPLS路由将数据包路由到目标MPLS路由器。 然后删除MPLS封装，并将生成的以太网帧插入目标以太网。 以太网帧使用以太网路由路由到目的地以太网端口。 提取TDM数据，并插入适当的TDM信道。 本发明允许在与TDM网络的边界处使用便宜的以太网设备，并且具有其QoS功能的可靠的MPLS网络可用于CES的任何长途部分。

公开(公告)号：US20060164989A1

公开(公告)日：2006-07-27

申请号：US11041586

申请日：2005-01-24

申请人： Neil Hart ,  Paul Kondrat ,  David Harvey ,  Shafiq Pirbhai ,  Shawn McAllister ,  Mark Smallwood

发明人： Neil Hart ,  Paul Kondrat ,  David Harvey ,  Shafiq Pirbhai ,  Shawn McAllister ,  Mark Smallwood

IPC分类号： H04J1/16 ,  H04L12/56

CPC分类号： H04L43/0894 ,  H04L43/16 ,  H04L47/10 ,  H04L47/11 ,  H04L47/2441 ,  H04L47/263 ,  H04L47/30 ,  H04L47/326 ,  H04L2012/5679 ,  H04L2012/5682 ,  Y02D50/10

摘要： Communication traffic management systems and methods are disclosed. A threshold status of a communication traffic queue of a second communication traffic management device which is capable of receiving communication traffic from a first communication traffic management device is determined, by comparing a depth of the queue to a corresponding threshold for instance. A rate of transfer of communication traffic to the second device, and possibly to particular queues of the second device from corresponding queues of the first device, is controlled based on the threshold status. Transmission of communication traffic from the queues of the second device may thus be in accordance with one communication traffic management scheme, whereas the content of each queue of the second device is controlled according to another communication traffic management scheme used by the first device to transfer communication traffic from its queues, to thereby provide for complex combined communication traffic management.

摘要翻译： 公开了通信业务管理系统和方法。 通过将队列的深度与相应的阈值进行比较来确定能够从第一通信流量管理装置接收通信流量的第二通信流量管理装置的通信流量管理装置的通信流量队列的阈值状态。 基于阈值状态来控制到第二设备的通信业务的传输速率以及可能到第一设备的相应队列的第二设备的特定队列的传输速率。 因此，来自第二设备的队列的通信业务的传输可以根据一种通信业务管理方案，而第二设备的每个队列的内容根据由第一设备用于传送通信的另一通信业务管理方案来控制 来自其队列的流量，从而提供复杂的组合通信流量管理。

公开(公告)号：US20050188106A1

公开(公告)日：2005-08-25

申请号：US10775214

申请日：2004-02-11

申请人： Shafiq Pirbhai ,  Vinod Prabhu ,  Benjamin Washam

发明人： Shafiq Pirbhai ,  Vinod Prabhu ,  Benjamin Washam

IPC分类号： G06F15/173 ,  H04L12/46 ,  H04L12/56

CPC分类号： H04L45/00 ,  H04L45/54

摘要： A method of managing virtual routing forwarding (VRF) tables at a provider edge PE router of a L3 virtual private network (VPN) is provided. An import route target (ImpRT) tree is maintained at the PE router, which keeps the association between all ImpRT attributes currently configured on said PE router and the virtual routing table VRF at that router. When an ImpRT attribute is configured on a VRF table, the PE router first searches the tree to identify a local VRF table that contains a route(s) with that ImpRT attribute. If this information is available locally, the VRF is updated by copying the route information, and there is no need to do a route refresh. When an ImpRT is deleted from a VRF, a route refresh is avoided by parsing all the routes in the VRF and removing the routes that no longer have a matching route target. In an alternative implementation, the local source is the master RIB (routing information base) which includes all routes in all VRFs at the router, and optionally even rejected routes that were filtered out using ImpRTs. In this variant, even routes associated with ImpRTs that are new to the router would be available to update the VRF without requiring a route refresh.

摘要翻译： 提供了一种在L3虚拟专用网（VPN）的提供商边缘PE路由器处管理虚拟路由转发（VRF）表的方法。 在PE路由器上维护导入路由目标（ImpRT）树，保持PE路由器上当前配置的所有ImpRT属性与该路由器上的虚拟路由表VRF之间的关联。 当在VRF表上配置ImpRT属性时，PE路由器首先在树中查找包含具有该ImpRT属性的路由的本地VRF表。 如果该信息在本地可用，则通过复制路由信息来更新VRF，并且不需要进行路由刷新。 当从VRF中删除ImpRT时，通过解析VRF中的所有路由并删除不再具有匹配路由目标的路由来避免路由刷新。 在替代实现中，本地源是主RIB（路由信息库），其包括路由器中所有VRF中的所有路由，以及可选地甚至拒绝使用ImpRT过滤掉的路由。 在这种变体中，甚至与路由器新增的ImpRT相关联的路由将可用于更新VRF而不需要路由刷新。

公开(公告)号：US07580359B2

公开(公告)日：2009-08-25

申请号：US11353086

申请日：2006-02-14

申请人： Shafiq Pirbhai

发明人： Shafiq Pirbhai

IPC分类号： H04L1/00

CPC分类号： H04L47/825 ,  H04L45/10 ,  H04L45/38 ,  H04L45/50 ,  H04L47/125 ,  H04L47/70 ,  H04L47/724

摘要： Various exemplary embodiments relate to a method including one or more of: transmitting a forward entity from the source node along forward links through the network toward the terminal node to determine links for the new path; upon encountering a node having insufficient capacity on a forward link exiting the node: determining whether the existing path has a reverse link entering the node; if so, transmitting the forward entity along the reverse link and then onward toward the terminal node to determine whether the existing path can be moved from the forward link and subsequent links to the terminal node to allow for the new path; and, if the existing path can be moved, moving the existing path from the forward, subsequent, and reverse links to create an updated path for the existing path and to allow the new path to assume the forward and subsequent links.

摘要翻译： 各种示例性实施例涉及一种方法，其包括以下中的一个或多个：从源节点沿着通过网络的前向链路向终端节点发送前向实体，以确定新路径的链路; 在遇到在离开节点的前向链路上具有不足容量的节点时：确定现有路径是否具有进入该节点的反向链路; 如果是，则沿着反向链路发送正向实体，然后向终端节点发送，以确定现有路径是否可以从前向链路移动，以及随后的链路到终端节点以允许新路径; 并且如果可以移动现有路径，则从前向链路，后续链路和反向链路移动现有路径以为现有路径创建更新的路径，并允许新路径假定前向链路和后续链路。

公开(公告)号：US20070189170A1

公开(公告)日：2007-08-16

申请号：US11353086

申请日：2006-02-14

申请人： Shafiq Pirbhai

发明人： Shafiq Pirbhai

IPC分类号： H04L12/26 ,  G06F15/173 ,  H04L12/28

CPC分类号： H04L47/825 ,  H04L45/10 ,  H04L45/38 ,  H04L45/50 ,  H04L47/125 ,  H04L47/70 ,  H04L47/724

摘要： A method for adding a new path between a source node and a terminal node in a network, the new path and an existing path traversing links between nodes in the network, the method comprising: transmitting a forward entity from the source node along forward links through the network toward the terminal node to determine links for the new path; and, upon encountering a node having insufficient capacity on a forward link exiting the node: determining whether the existing path has a reverse link entering the node; if so, transmitting the forward entity along the reverse link and then onward toward the terminal node to determine whether the existing path can be moved from the forward link and subsequent links to the terminal node to allow for the new path; and, if the existing path can be moved, moving the existing path from the forward, subsequent, and reverse links to create an updated path for the existing path and to allow the new path to assume the forward and subsequent links.

摘要翻译： 一种用于在网络中的源节点和终端节点之间添加新路径的方法，所述新路径和遍历所述网络中的节点之间的链路的现有路径，所述方法包括：从所述源节点沿着前向链路传送转发实体 网络向终端节点确定新路径的链路; 并且在遇到在离开所述节点的前向链路上具有不足容量的节点时：确定所述现有路径是否具有进入所述节点的反向链路; 如果是，则沿着反向链路发送正向实体，然后向终端节点发送，以确定现有路径是否可以从前向链路移动，以及随后的链路到终端节点以允许新路径; 并且如果可以移动现有路径，则从前向链路，后续链路和反向链路移动现有路径以为现有路径创建更新的路径，并允许新路径假定前向链路和后续链路。

公开(公告)号：US10257016B2

公开(公告)日：2019-04-09

申请号：US12480456

申请日：2009-06-08

申请人： Shafiq Pirbhai ,  Ron Haberman ,  Mustapha Aissaoui

发明人： Shafiq Pirbhai ,  Ron Haberman ,  Mustapha Aissaoui

IPC分类号： H04L12/763 ,  H04L29/12

摘要： Various exemplary embodiments relate to a provider edge node and a method performed on the node including one or more of the following: storing, in a cache on the node, an association between an Internet Protocol (IP) address of the customer edge device and a Media Access Control (MAC) address of the customer edge device; storing, in a backup memory in the node, a copy of the last-known IP address of the customer edge device; removing the stored association from the cache in response to a cache-clearing event, while maintaining the copy of the last-known IP address in the backup memory; sending an address discovery message, the address discovery message requesting an updated MAC address corresponding to the last-known IP address maintained in the backup memory; and updating the cache to reflect the updated MAC address upon receipt of an additional address update message from the customer edge device.

公开(公告)号：US20100309915A1

公开(公告)日：2010-12-09

申请号：US12480456

申请日：2009-06-08

申请人： Shafiq Pirbhai ,  Ron Haberman ,  Mustapha Aissaoui

发明人： Shafiq Pirbhai ,  Ron Haberman ,  Mustapha Aissaoui

IPC分类号： H04L12/56 ,  G06F12/08 ,  G06F11/00

CPC分类号： H04L29/12028 ,  H04L29/12811 ,  H04L61/103 ,  H04L61/6009

摘要： Various exemplary embodiments relate to a provider edge node and a method performed on the node including one or more of the following: storing, in a cache on the node, an association between an Internet Protocol (IP) address of the customer edge device and a Media Access Control (MAC) address of the customer edge device; storing, in a backup memory in the node, a copy of the last-known IP address of the customer edge device; removing the stored association from the cache in response to a cache-clearing event, while maintaining the copy of the last-known IP address in the backup memory; sending an address discovery message, the address discovery message requesting an updated MAC address corresponding to the last-known IP address maintained in the backup memory; and updating the cache to reflect the updated MAC address upon receipt of an additional address update message from the customer edge device.

摘要翻译： 各种示例性实施例涉及提供商边缘节点和在节点上执行的包括以下一个或多个的方法：在节点的高速缓存中存储客户边缘设备的因特网协议（IP）地址与 客户边缘设备的媒体访问控制（MAC）地址; 在节点的备份存储器中存储客户边缘设备的最后知道的IP地址的副本; 在保留备份存储器中最后知道的IP地址的副本的同时，响应于高速缓存清除事件从缓存中移除所存储的关联; 发送地址发现消息，所述地址发现消息请求与备份存储器中保存的最后知道的IP地址对应的更新的MAC地址; 以及当从所述客户边缘设备接收到附加的地址更新消息时，更新所述高速缓存以反映所述更新的MAC地址。