公开(公告)号：US5924112A

公开(公告)日：1999-07-13

申请号：US707941

申请日：1996-09-10

申请人： Simon Davie Barber ,  Crispin Nicholas Dent-Young ,  Christopher Guy Sabey ,  Jonathan Curnyn ,  David Andrew James Pearce ,  Trevor Warwick

发明人： Simon Davie Barber ,  Crispin Nicholas Dent-Young ,  Christopher Guy Sabey ,  Jonathan Curnyn ,  David Andrew James Pearce ,  Trevor Warwick

IPC分类号： H04L12/46 ,  H04L12/56 ,  G06F12/00

CPC分类号： H04L49/9047 ,  H04L12/4625 ,  H04L49/90 ,  H04L49/901 ,  H04L49/9078

摘要： A bridge device (4) for connecting a plurality of communication networks (1-3) around which data is transmitted in frames which include control information defining at least the identity of a destination for data in the frame, each network having at least one end station (8-12). The bridge device comprises a corresponding plurality of data coupling units (13,14) for connection to respective ones of the networks (1-3), each data coupling unit including receive (13) and transmit (14) interfaces for respectively receiving data from and transmitting data onto the connected network. A common store (17) is connected to all the data coupling units for receiving data being transmitted from one network to another. A controller (16,28) controls the routing of data through the bridge device (4) via the common store (17), the controller causing incoming data to be routed to a destination network before the data has been fully stored in the common store, if predetermined conditions are satisfied, the controller being adapted to monitor the amount of free space in the common storage means and to prevent the supply of data to the common store if the available free space is less than a predetermined amount.

公开(公告)号：US20170149657A1

公开(公告)日：2017-05-25

申请号：US14952249

申请日：2015-11-25

申请人： Robert J. Shearman ,  Neale David Raymond Ranns ,  Crispin Nicholas Dent-Young ,  Alan J. Cheilek

发明人： Robert J. Shearman ,  Neale David Raymond Ranns ,  Crispin Nicholas Dent-Young ,  Alan J. Cheilek

IPC分类号： H04L12/725 ,  H04L12/713 ,  H04L12/741

CPC分类号： H04L45/306 ,  H04L45/586 ,  H04L45/745

摘要： In one embodiment, a provider edge packet switching device of a provider network is configured with different Internet Protocol (IP) forwarding information bases (FIBs) depending on whether the forwarding information base is associated with core-facing ingress packet traffic (e.g., packet traffic from the provider network) or customer-facing ingress packet traffic (e.g., packet traffic from a customer network). In the latter case of customer-facing ingress packet traffic, the customer-facing forwarding information base includes load balancing lookup results for load balancing traffic between a customer edge packet switching device and through the provider network. In the case of core-facing ingress packet traffic, the core-facing forwarding information base includes a lookup result for forwarding traffic to a customer edge packet switching device, and does not include the above-referenced load balancing lookup result information.

公开(公告)号：US09729432B2

公开(公告)日：2017-08-08

申请号：US14952249

申请日：2015-11-25

申请人： Robert J. Shearman ,  Neale David Raymond Ranns ,  Crispin Nicholas Dent-Young ,  Alan J. Cheilek

发明人： Robert J. Shearman ,  Neale David Raymond Ranns ,  Crispin Nicholas Dent-Young ,  Alan J. Cheilek

IPC分类号： H04L12/28 ,  H04L12/725 ,  H04L12/741 ,  H04L12/713

CPC分类号： H04L45/306 ,  H04L45/586 ,  H04L45/745

摘要： In one embodiment, a provider edge packet switching device of a provider network is configured with different Internet Protocol (IP) forwarding information bases (FIBs) depending on whether the forwarding information base is associated with core-facing ingress packet traffic (e.g., packet traffic from the provider network) or customer-facing ingress packet traffic (e.g., packet traffic from a customer network). In the latter case of customer-facing ingress packet traffic, the customer-facing forwarding information base includes load balancing lookup results for load balancing traffic between a customer edge packet switching device and through the provider network. In the case of core-facing ingress packet traffic, the core-facing forwarding information base includes a lookup result for forwarding traffic to a customer edge packet switching device, and does not include the above-referenced load balancing lookup result information.

公开(公告)号：US08223666B2

公开(公告)日：2012-07-17

申请号：US11211109

申请日：2005-08-23

申请人： Neil Alasdair James Jarvis ,  Crispin Nicholas Dent-Young ,  Alan J. Cheilek ,  Matthew James Collins ,  Christian Cassar ,  Jesper Skriver

发明人： Neil Alasdair James Jarvis ,  Crispin Nicholas Dent-Young ,  Alan J. Cheilek ,  Matthew James Collins ,  Christian Cassar ,  Jesper Skriver

IPC分类号： H04L12/28

CPC分类号： H04L45/54 ,  H04L45/02 ,  H04L45/7457

摘要： A method of constructing a forwarding database for a data communications network comprising a plurality of network components and supporting at least first and second topologies having one or more common network components is described. The forwarding database includes a plurality of entries providing forwarding information for data destined for a related network component. The method comprises the step, performed at a constructing network component, of deriving topology dependent forwarding information for data destined for a network component. The method further comprises the step of including the topology dependent forwarding information at the related forwarding database entry.

摘要翻译： 描述了构建包括多个网络组件并且支持具有一个或多个公共网络组件的至少第一和第二拓扑的数据通信网络的转发数据库的方法。 转发数据库包括多个条目，提供用于相关网络组件的数据的转发信息。 该方法包括在构造网络组件处执行的针对网络组件的数据导出与拓扑相关的转发信息的步骤。 该方法还包括在相关转发数据库条目处包括拓扑相关转发信息的步骤。

公开(公告)号：US06539020B1

公开(公告)日：2003-03-25

申请号：US09094188

申请日：1998-06-09

申请人： Simon Davie Barber ,  Crispin Nicholas Dent-Young ,  Christopher Guy Sabey ,  Jonathan Curnyn ,  David Andrew James Pearce ,  Trevor Warwick

发明人： Simon Davie Barber ,  Crispin Nicholas Dent-Young ,  Christopher Guy Sabey ,  Jonathan Curnyn ,  David Andrew James Pearce ,  Trevor Warwick

IPC分类号： H04L1228

CPC分类号： H04L49/9047 ,  H04L12/4625 ,  H04L49/90 ,  H04L49/901 ,  H04L49/9078

摘要： A bridge device (4) for connecting a plurality of communication networks (1-3) around which data is transmitted in frames which include control information defining at least the identity of a destination for data in the frame, each network having at least one end station (8-12). The bridge device comprises a corresponding plurality of data coupling units (13,14) for connection to respective ones of the networks (1-3), each data coupling unit including receive (13) and transmit (14) interfaces for respectively receiving data from and transmitting data onto the connected network. A common store (17) is connected to all the data coupling units for receiving data being transmitted from one network to another. A controller (16,28) controls the routing of data through the bridge device (4) via the common store (17), the controller causing incoming data to be routed to a destination network before the data has been fully stored in the common store, if predetermined conditions are satisfied, the controller being adapted to monitor the amount of free space in the common storage means and to prevent the supply of data to the common store if the available free space is less than a predetermined amount.

摘要翻译： 一种桥接设备（4），用于连接多个通信网络（1-3），所述多个通信网络（1-3）以帧为单位传输数据，所述多个通信网络（1-3）包括至少定义所述帧中的数据的目的地的标识的控制信息，每个网络具有至少一个端点 车站（8-12）。 桥接器件包括用于连接到各个网络（1-3）的对应的多个数据耦合单元（13,14），每个数据耦合单元包括接收（13）和发送（14）接口，用于分别从 并将数据发送到所连接的网络上。 公共存储器（17）连接到所有数据耦合单元，用于接收从一个网络发送到另一个网络的数据。 控制器（16,28）经由公共存储器（17）控制通过桥接器件（4）的数据路由，该控制器使得输入数据被路由到目的地网络，然后数据已被完全存储在公共存储器中 如果满足预定条件，则控制器适于监视公共存储装置中的可用空间量，并且如果可用空闲空间小于预定量，则防止向公用存储器提供数据。