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公开(公告)号：US20050175004A1
公开(公告)日：2005-08-11
申请号：US11072202
申请日：2005-03-04
CPC分类号： H04J3/0632 , H04J3/1611 , H04J3/1617 , H04J2203/0094
摘要： A method of transmitting OSI layer 2 datacoms data by direct incorporation into a plurality of synchronous digital hierarchy virtual containers is disclosed, in which a higher bit rate OSI layer 2 data frame is multiplexed into a plurality of lower bit rate SDH (or SONET) virtual containers, which are transmitted simultaneously and in parallel over a synchronous communications network. The plurality of virtual containers are virtually concatenated by association of the payloads of the plurality of virtual containers. Re-assembly of the OSI layer 2 data frames from a plurality of virtually concatenated VCs is achieved by storing each received VC payload corresponding to an OSI layer 2 data frame in a corresponding respective memory location, and alternately reading interleaved bytes from the plurality of payloads under control of a plurality of read pointers.
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2.发明申请公开(公告)号：US20050068993A1
公开(公告)日：2005-03-31
申请号：US10987813
申请日：2004-11-12
CPC分类号： H04L47/10 , H04J3/1617 , H04J2203/0028 , H04J2203/0085 , H04J2203/0096 , H04L47/30 , H04L47/38
摘要： A frame based data communications network is interfaced to a synchronous digital hierarchy network via a plurality of frame based data port cards incorporated into a plurality of synchronous multiplexers. Each port card comprises a conventional frame based data port, a frame switch, a rate adapter means and a mapping means for mapping data frames into a plurality of SDH virtual containers. Frame based data is incorporated directly into a synchronous virtual container without encapsulation in an intermediate protocol. A number of topologies of a frame based data channel network are possible, overlaid on the underlying synchronous transport network, including an open loop topology, a ring mode topology, and a backhaul topology.
摘要翻译： 基于帧的数据通信网络通过并入到多个同步多路复用器中的多个基于帧的数据端口卡连接到同步数字分层网络。 每个端口卡包括传统的基于帧的数据端口，帧交换机，速率适配器装置和用于将数据帧映射到多个SDH虚拟容器中的映射装置。 基于帧的数据直接并入到同步虚拟容器中，而不需要在中间协议中进行封装。 基于帧的数据信道网络的多个拓扑是可能的，覆盖在底层同步传输网络上，包括开环拓扑，环模式拓扑和回程拓扑。
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公开(公告)号：US06778541B2
公开(公告)日：2004-08-17
申请号：US09727644
申请日：2000-12-01
申请人： Allen Houston , Paul Fee , Christopher Murton , Ewart Tempest , Philip Christian
发明人： Allen Houston , Paul Fee , Christopher Murton , Ewart Tempest , Philip Christian
IPC分类号： H04L1256
CPC分类号： H04L12/4633 , H04L45/02 , H04L45/026 , H04L45/04
摘要： The present invention relates to data tunnelling and in one embodiment to the tunnelling of IP (Internet Protocol) data across an OSI (Open Systems Interconnect) network. In the preferred embodiment, network elements include both an OSI stack and an IP stack, and a respective directory of OSI addresses and corresponding IP subnets. Each network element generates a routing data packet, conveniently a Link State Packet (LSP), which includes the OSI address and IP subnet(s) associated with that network element. The LSPs are distributed across the network in normal manner. Upon receipt of an LSP from another network element, each network element updates its respective directory in respect of said other network element. Thus, each directory is automatically updated to reflect changes in the network, particularly in respect of IP subnets. This arrangement significantly reduces the need for manual tunnel configuration in the network. In an alternative embodiment, the invention provides dynamic data tunnelling of OSI data over an IP network.
摘要翻译： 本发明涉及数据隧道，在一个实施例中涉及跨越OSI（开放系统互连）网络的IP（因特网协议）数据的隧道传输。 在优选实施例中，网络元件包括OSI堆栈和IP堆栈以及OSI地址和对应的IP子网的相应目录。 每个网元产生路由数据包，方便地包括链路状态分组（LSP），其包括与该网络元件相关联的OSI地址和IP子网。 LSP以正常方式分布在网络中。 在从另一网络元件接收到LSP时，每个网络元件相对于所述另一网络元件更新其相应的目录。 因此，每个目录被自动更新以反映网络中的变化，特别是在IP子网方面。 这种布置显着地减少了在网络中手动隧道配置的需要。 在替代实施例中，本发明通过IP网络提供OSI数据的动态数据隧道传输。
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