公开(公告)号：WO0244844A3

公开(公告)日：2002-08-29

申请号：PCT/US0144397

申请日：2001-11-28

Applicant: WORLDCOM INC

Inventor： MCDYSAN DAVE ,  THOMAS HOWARD LEE ,  YAO LEI

IPC: H04L12/66 ,  H04L12/24 ,  H04L29/06 ,  G06F15/16 ,  G06F13/00 ,  G06F13/38 ,  G08B29/00 ,  H04L12/56

CPC classification number: H04L41/0893 ,  H04L41/5003 ,  H04L41/5022 ,  H04L41/5045 ,  H04L41/5087 ,  H04L69/22

Abstract: A programmable access device for use in a network access system includes first and second network interfaces (32, 58 Access network) through which packets are communicated with a network, a forwarding table (86) utilized to route packets communication between the first and second network interfaces, and a packet header filter (80, 90). The packet header filter (80, 90) identifies messages received at one of the first and second network interface on which policy-based services are to be implemented and passes identified messages via a message interface (100) to an external processor (42) for processing. In preferred embodiments, the packet header filter (80, 90) is capable of filetering packets for service processing based upon protocol information pertaining to protocol layers higher than layer 3. In preferred embodiments, the programmable access device may also include a usage monitor that reports events, such as session activity levels, to the external processor (42), a policer (82) that polices packets by reference to programmed traffic parameters, and a scheduler that schedules (96) the transmission of outgoing packets to support multiple quality of service classes.

Abstract translation: 一种用于网络接入系统的可编程接入设备包括分组与网络通信的第一和第二网络接口（32,58接入网络），用于在第一和第二网络之间路由分组通信的转发表（86） 接口和数据包头过滤器（80,90）。 分组报头过滤器（80,90）识别在第一和第二网络接口之一处接收的消息，在哪个基于策略的服务将被实现，并且经由消息接口（100）将标识的消息传递到外部处理器（42），用于 处理。 在优选实施例中，分组报头过滤器（80,90）能够基于涉及高于层3的协议层的协议信息来对用于服务处理的分组进行篡改。在优选实施例中，可编程访问设备还可以包括报告 事件（例如会话活动级别）到外部处理器（42），通过参考编程的业务参数来监视分组的策略器（82）以及调度器（96）传送出去分组以支持多种服务质量 类。

公开(公告)号：BR0208266A

公开(公告)日：2004-03-02

申请号：BR0208266

申请日：2002-03-20

Applicant: WORLDCOM INC

Inventor： MCDYSAN DAVID E ,  RAWLINS DIANA J ,  YAO LEI

IPC: G06F9/00 ,  G06F15/16 ,  G06F15/173 ,  H04L12/24 ,  H04L12/56

公开(公告)号：AU1989202A

公开(公告)日：2002-06-11

申请号：AU1989202

申请日：2001-11-28

Applicant: WORLDCOM INC

Inventor： MCDYSAN DAVE ,  THOMAS HOWARD LEE ,  YAO LEI

IPC: G06F15/00 ,  G06F11/00 ,  G06F11/20 ,  G06F13/00 ,  H04L12/18 ,  H04L12/28 ,  H04L12/56 ,  H04L29/06 ,  H04Q3/00

Abstract: An external processor for a network access system having a programmable access device includes a service controller that provides at least one service for network traffic, a message processor that processes network messages for service processing by the service controller, and a programmable access device controller that programs the programmable access device in response to service controller processing. It is advantageous for the external processor to include primary and secondary service controllers for a particular service so that, if the primary service controller fails, the secondary service controller can provide the particular service for message received from the programmable access device. In preferred embodiments, the service controller further includes a reporting processor that provides an interface through which reporting messages received from the programmable access device can be communicated to the service controller and a signaling controller that transmits signals to configure network hardware to establish requested network connections. The external processor preferably further supports a service policy interface through which the service controller can request policy decisions from a possibly remote policy server.

公开(公告)号：WO0245317A3

公开(公告)日：2003-02-13

申请号：PCT/US0144398

申请日：2001-11-28

Applicant: WORLDCOM INC

Inventor： MCDYSAN DAVE ,  THOMAS HOWARD LEE ,  YAO LEI

IPC: H04L12/56 ,  H04L29/06 ,  H04L12/28 ,  G06F15/16

CPC classification number: H04L63/0236 ,  H04L45/308 ,  H04L45/60 ,  H04L47/2475 ,  H04L63/102

Abstract: A distributed network access system (30) in accordance with the present invention includes at least an external processor (42) and a programmable access device (40). The programmable access device has a message interface coupled to the external processor and first and second network interfaces through which packets are communicated with a network. The programmable access device includes a packet header filter and a forwarding table (50) that is utilized to route packets communicated between the first and second network interfaces. In response to receipt of a series of packets, the packet header filter in the programmable access device identifies messages in the series of messages upon which policy-based services are to be implemented and passes identified messages via the message interface to the external processor for processing. In response to receipt of a message, the external processor invokes service control on the message and may also invoke policy control (48) on the message.

Abstract translation: 根据本发明的分布式网络接入系统（30）至少包括外部处理器（42）和可编程接入设备（40）。 可编程访问设备具有耦合到外部处理器的消息接口以及与网络通信的第一和第二网络接口。 可编程接入设备包括分组报头过滤器和用于路由在第一和第二网络接口之间传送的分组的转发表（50）。 响应于接收到一系列分组，可编程接入设备中的分组报头过滤器识别要在其上实现基于策略的服务的一系列消息中的消息，并且经由消息接口将识别的消息传递到外部处理器以进行处理 。 响应于接收到消息，外部处理器调用对消息的服务控制，并且还可以调用消息上的策略控制（48）。

公开(公告)号：CA2441320A1

公开(公告)日：2002-09-26

申请号：CA2441320

申请日：2002-03-20

Applicant: WORLDCOM INC

Inventor： YAO LEI ,  MCDYSAN DAVID E ,  RAWLINS DIANA J

IPC: G06F15/16 ,  G06F15/173 ,  H04L12/56

Abstract: In one embodiment of the invention, a network system includes a boundary router, a second router, and an upstream link of the second router coupled between to the output port of the boundary router and an input port of the second router. The second router includes an admission control function and a data plane. In response to a request to reserve resources for a flow through the second router, the admission control function performs admission control for both the upstream link and its downstream link. In a preferred embodimen t, the second router performs admission control for the upstream link only if t he second router is a receiving edge router for the flow. Because the second router performs admission control for its upstream link, the boundary router transmits the request toward an upstream router without performing admission control for the link.

公开(公告)号：CA2430132A1

公开(公告)日：2002-06-06

申请号：CA2430132

申请日：2001-11-28

Applicant: WORLDCOM INC

Inventor： YAO LEI ,  THOMAS HOWARD LEE ,  MCDYSAN DAVE

IPC: H04L12/66 ,  H04L12/24 ,  H04L29/06 ,  G06F15/16 ,  G08B29/00 ,  G06F13/00 ,  G06F13/38 ,  H04L12/56

Abstract: A programmable access device for use in a network access system includes first and second network interfaces (32, 58 Access network) through which packets are communicated with a network, a forwarding table (86) utilized to route packets communication between the first and second network interfaces, and a packet header filter (80, 90). The packet header filter (80, 90) identifies messages received at one of the first and second network interface on which policy-based services are to be implemented and passes identified messages via a message interface (100) to an external processor (42) for processing. In preferred embodiments, the packet header filter (80, 90) is capable of filetering packets for service processing based upon protocol information pertaining to protocol layers higher than layer 3. In preferred embodiments, the programmable access device may also include a usage monitor that reports events, such as session activity levels, to the external processor (42), a policer (82) that polices packets by reference to programmed traffic parameters, and a scheduler that schedules (96) the transmission of outgoing packets to support multiple quality of service classes.

公开(公告)号：BR0208195A

公开(公告)日：2004-03-02

申请号：BR0208195

申请日：2002-03-20

Applicant: WORLDCOM INC

Inventor： MCDYSAN DAVID E ,  RAWLINS DIANA J ,  YAO LEI

IPC: G06F13/00 ,  H04L12/14 ,  H04L12/54 ,  H04L45/58 ,  H04L47/20 ,  H04L47/22 ,  H04L47/724 ,  H04L47/80 ,  H04M3/22 ,  H04M3/436 ,  H04M7/00 ,  H04M15/00 ,  H04Q3/00

Abstract: In one embodiment, a network system of the present invention includes at least a first router and a second router coupled to an upstream link to permit data flow from the first router to the second router across the upstream link. The second router includes a control plane and a data plane having an input port coupled to the upstream link and an output port connectable to a downstream link. The control plane includes a virtual pool having a capacity corresponding to a resource capacity of the first router and an admission control function. In response to a request to reserve resources for a flow through the data plane from the input port to the output port, the admission control function performs admission control for the upstream link by reference to resource availability within the virtual pool. In one embodiment, the request is a request to reserve resources for an Integrated Services flow, and the capacity of the virtual pool corresponds to a resource capacity of a Integrated Services service class supported by the first router.

公开(公告)号：AU2576402A

公开(公告)日：2002-06-11

申请号：AU2576402

申请日：2001-11-28

Applicant: WORLDCOM INC

Inventor： MCDYSAN DAVE ,  THOMAS HOWARD LEE ,  YAO LEI

IPC: H04L12/56 ,  H04L12/24 ,  H04L12/26 ,  H04L29/06 ,  G06F15/16

Abstract: In a network access system including an external processor and a programmable access device, the external processor transmits a control message to the programmable access device to establish a configuration of the programmable access device. The programmable access device then communicates messages to the external processor for service processing in accordance with the configuration. For example, the control message may be a filter control message that establishes a configuration of a packet header filter in the programmable access device. The packet header filter then communicates network messages filtered from a packet flow in accordance with the configuration established by the control message. To limit the communication of network messages from the programmable access device to the external processor, the external processor can send a message setting message interface flags in the programmable access device. The external processor may also transmit a monitor control message to the programmable access device to establish a configuration of a monitor in the programmable access device. The programmable access device then communicates reporting messages to the external processor in response to the configuration of the monitor.

公开(公告)号：AU1989302A

公开(公告)日：2002-06-11

申请号：AU1989302

申请日：2001-11-28

Applicant: WORLDCOM INC

Inventor： MCDYSAN DAVE ,  THOMAS HOWARD LEE ,  YAO LEI

IPC: H04L12/66 ,  H04L12/24 ,  H04L29/06

Abstract: A programmable access device for use in a network access system includes first and second network interfaces through which packets are communicated with a network, a forwarding table utilized to route packets communicated between the first and second network interfaces, and a packet header filter. The packet header filter identifies messages received at one of the first and second network interfaces on which policy-based services are to be implemented and passes identified messages via a message interface to an external processor for processing. In preferred embodiments, the packet header filter is capable of filtering packets for service processing based upon protocol information pertaining to protocol layers higher than layer 3. In preferred embodiments, the programmable access device may also include a usage monitor that reports events, such as session activity levels, to the external processor, a policer that polices packets by reference to programmed traffic parameters, and a scheduler that schedules the transmission of outgoing packets to support multiple quality of service classes.

公开(公告)号：CA2430129A1

公开(公告)日：2002-06-06

申请号：CA2430129

申请日：2001-11-28

Applicant: WORLDCOM INC

Inventor： MCDYSAN DAVE ,  YAO LEI ,  THOMAS HOWARD LEE

IPC: H04L12/56 ,  H04L29/06 ,  H04L12/28 ,  G06F15/16

Abstract: A distributed network access system (30) in accordance with the present invention includes at least an external processor (42) and a programmable access device (40). The programmable access device has a message interface coupled to the external processor and first and second network interfaces through which packets are communicated with a network. The programmable access device includes a packet header filter and a forwarding table (50) that is utilized to route packets communicated between the first and second network interfaces. In response to receipt of a series of packets, the packet header filter in the programmable access device identifies messages in the series of messages upon which policy-based services are to be implemented and passes identified messages via the message interface to the external processor for processing. In response to receipt of a message, the external processor invokes service control on the message and may also invoke policy control (48) on the message.