Gigabit ethernet interface to synchronous optical network (SONET) ring
    1.
    发明授权
    Gigabit ethernet interface to synchronous optical network (SONET) ring 失效
    千兆以太网接口,同步光网络(SONET)环

    公开(公告)号:US06222848B1

    公开(公告)日:2001-04-24

    申请号:US08996172

    申请日:1997-12-22

    IPC分类号: H04J302

    摘要: A method and apparatus for routing data packets via a synchronous optical (SONET) network from devices connected to a local area network to devices connected to other local area networks. At each transport node in the SONET network the data packets are unloaded from SONET payloads and requeued for transmission on an output path. This allows for easy resolution of contention between devices transmitting at the same time and avoids pre-assigning SONET channels. Source and destination address information from the data packets can be used to route the data packets through the SONET network. A time-to-live indicator can be used to find the shortest path to a destination address in a SONET ring network or any bidirectional ring network.

    摘要翻译: 一种用于经由同步光(SONET)网络从连接到局域网的设备将数据分组路由到连接到其他局域网的设备的方法和装置。 在SONET网络中的每个传输节点,数据分组从SONET有效载荷中卸载,并在输出路径上进行传输。 这允许在同时发射的设备之间容易地解决争用,并避免预先分配SONET信道。 来自数据包的源地址信息可以用于通过SONET网络路由数据包。 可以使用生存时间指示符找到SONET环网或任何双向环网中的目的地地址的最短路径。

    Network fault recovery method and apparatus
    2.
    发明授权
    Network fault recovery method and apparatus 有权
    网络故障恢复方法及装置

    公开(公告)号:US06530032B1

    公开(公告)日:2003-03-04

    申请号:US09401919

    申请日:1999-09-23

    IPC分类号: G06F1120

    摘要: The present invention provides layer one, two and three (L1/L2/L3) Integration and L1 cut-through path utilization in an apparatus and method of fault recovery. A switch combines an IP router with L2 capabilities, and an L1 cross connect (optical or electrical). A network of such switches is configured with label switched paths (LSP) that correspond to layer 1 (L1) cut-through paths. The layer 2 (L2) cut-through path is over laid on the L1 cut-through path and the L2 cut-through path is used for IP data flows. Preferably, the L2 cut-through paths are defined as label switched paths (LSP) and the L1 cut-through paths are each an end-to-end path established with L1 cross connects associated with each switch.

    摘要翻译: 本发明在故障恢复的装置和方法中提供第一层,第二层和第三层(L1 / L2 / L3)集成和L1切割路径利用。 交换机将IP路由器与L2功能相结合,以及L1交叉连接(光学或电气)。 这种交换机的网络配置有对应于层1(L1)直通路径的标签交换路径(LSP)。 第二层(L2)直通路径覆盖在L1穿通路径上,L2穿通路径用于IP数据流。 优选地,L2穿通路径被定义为标签交换路径(LSP),并且L1直通路径各自是与每个交换机相关联的L1交叉连接建立的端到端路径。