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1.发明授权
公开(公告)号：US5852606A
公开(公告)日：1998-12-22
申请号：US536137
申请日：1995-09-29
申请人： Jeff Prince , Mike Noll , Earl Ferguson , Bobby Johnson , Randy Ryals
发明人： Jeff Prince , Mike Noll , Earl Ferguson , Bobby Johnson , Randy Ryals
CPC分类号： H04Q11/0478 , H04L2012/561 , H04L2012/5614
摘要： The switch fabric of the ATM switch, i.e., the ATM switch backplane bus, switches a cell based on routing information provided by the source LAN or ATM module to an output port on a destination LAN or ATM module of the switching hub. In the described system, the ATM switch is preconfigured to provide a fully connected topology between ports of all modules. In one embodiment, ATM cells transmitted across the ATM switch fabric between a source LAN or ATM module and a destination LAN module, e.g., Token Ring, FDDI or Ethernet, is accomplished by way of a routing tag prepended on the ATM cells. The routing tag provides both unicast and multicast group destination information such that the ATM cells are routed to the appropriate port on a given destination module without the need to establish a virtual circuit between the source module and the destination module using VPI/VCIs.
摘要翻译： ATM交换机的交换结构，即ATM交换机背板总线，根据由源LAN或ATM模块提供的路由信息将小区切换到交换集线器的目的地LAN或ATM模块上的输出端口。 在所描述的系统中，ATM交换机被预配置为在所有模块的端口之间提供完全连接的拓扑。 在一个实施例中，通过在ATM信元上提供的路由标签来实现通过ATM交换结构在源LAN或ATM模块与目的地LAN模块（例如，令牌环，FDDI或以太网）之间传输的ATM信元。 路由标签提供单播和多播组目的地信息，使得ATM信元被路由到给定目的地模块上的适当端口，而不需要使用VPI / VCI在源模块和目的地模块之间建立虚拟电路。
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2.发明授权LAN/ATM switch having local packet switching and an ATM core fabric 有权具有本地分组交换和ATM核心结构的LAN / ATM交换机公开(公告)号：US07468977B1
公开(公告)日：2008-12-23
申请号：US10298137
申请日：2002-11-18
申请人： H. Earl Ferguson , Bobby R. Johnson, Jr. , Mike Noll , Jeff Prince , Randy Ryals
发明人： H. Earl Ferguson , Bobby R. Johnson, Jr. , Mike Noll , Jeff Prince , Randy Ryals
IPC分类号： H04L12/28
CPC分类号： H04L12/5601 , H04L2012/5642 , H04L2012/5652 , H04L2012/5665
摘要： A device for switching data packets providing for local packet switching and non-local ATM switching. The device provides a packet switch coupled with LAN ports and provides for local switching between the LAN ports over the packet switch. Packets not known to be destined for data terminal equipment coupled with one of the ports are segmented and switched over an ATM backplane, switch or network.
摘要翻译： 用于切换提供本地分组交换和非本地ATM交换的数据分组的设备。 该设备提供与LAN端口耦合的分组交换机，并且通过分组交换机提供LAN端口之间的本地交换。 不知道要用于与其中一个端口耦合的数据终端设备的数据包是通过ATM背板，交换机或网络进行分段和切换的。
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公开(公告)号：US5809024A
公开(公告)日：1998-09-15
申请号：US679668
申请日：1996-07-12
申请人： H. Earl Ferguson , Jeff Prince , Randy Ryals , Gururaj Singh , Michael Yip
发明人： H. Earl Ferguson , Jeff Prince , Randy Ryals , Gururaj Singh , Michael Yip
CPC分类号： H04Q11/0478 , H04L2012/561 , H04L2012/5614
摘要： In a segmentation and reassembly module in a local area network switch module, a method and apparatus for storing fixed length data cells received from an ATM network in a plurality of memory buffers during the reassembly of the data cells in to a variable length data packet to be transmitted on an attached local area network.
摘要翻译： 在局域网交换机模块中的分段和重组模块中，一种方法和装置，用于在将数据小区重新组装成可变长度数据分组期间存储从多个存储器缓冲器中的ATM网络接收的固定长度数据单元， 在附加的局域网上传输。
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公开(公告)号：US20060165055A1
公开(公告)日：2006-07-27
申请号：US11376666
申请日：2006-03-15
申请人： Randy Ryals , Jeffrey Prince , H. Ferguson , Mike Noll , Derek Pitcher
发明人： Randy Ryals , Jeffrey Prince , H. Ferguson , Mike Noll , Derek Pitcher
CPC分类号： H04L49/25 , H04L49/252 , H04L49/254 , H04L49/30 , H04L49/3009 , H04L49/3036 , H04L49/3045 , H04L49/40 , H04L49/90 , H04L49/901
摘要： A method and apparatus for managing the flow of data within a switching device is provided. The switching device includes network interface cards connected to a common backplane. Each interface card is configured to support the maximum transfer rate of the backplane by maintaining a “pending” queue to track data that has been received but for which the appropriate routing destination has not yet been determined. The switching device includes a switch controller that maintains a central card/port-to-address table. When an interface card receives data with a destination address that is not known to the interface card, the interface card performs a direct memory access over a bus that is separate from the backplane to read routing data directly from the central table in the switch controller. Each interface card builds and maintains a routing information table in its own local memory that only includes routing information for the destination addresses that the interface card is most likely to receive.
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公开(公告)号：US5802056A
公开(公告)日：1998-09-01
申请号：US679090
申请日：1996-07-12
CPC分类号： H04L49/405 , H04L12/4608 , H04L12/4637 , H04L12/4641 , H04Q11/0478 , H04L2012/5617 , H04L2012/5618
摘要： A token ring network having virtual token rings comprised of one or more physical token rings. A media access control (MAC) layer device such as a bridge or switching hub has at least two ports assigned the same ring number such that token ring segments connected to the ports operate as though on the same physical token ring segment even though they are electrically isolated. All physical rings in the same virtual ring are considered to be in the same broadcast domain.
摘要翻译： 具有由一个或多个物理令牌环组成的虚拟令牌环的令牌环网络。 诸如桥接器或交换集线器之类的媒体访问控制（MAC）层设备具有至少两个分配了相同环号的端口，使得连接到端口的令牌环段在同一物理令牌环段上操作，即使它们是电 孤立。 同一个虚拟环中的所有物理环都被认为是在相同的广播域中。
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6.再颁专利公开(公告)号：USRE40467E1
公开(公告)日：2008-08-26
申请号：US11347786
申请日：2006-02-03
IPC分类号： H04L12/00
CPC分类号： H04L49/901 , H04L29/06 , H04L47/10 , H04L49/90 , H04L49/9063
摘要： A method and apparatus for managing the flow of data within a switching device is provided. The switching device includes network interface cards connected to a common backplane. Each interface card is configured to support the maximum transfer rate of the backplane by maintaining a “pending” queue to track data that has been received but for which the appropriate routing destination has not yet been determined. The switching device includes a switch controller that maintains a central card/port-to-address table. When an interface card receives data with a destination address that is not known to the interface card, the interface card performs a direct memory access over a bus that is separate from the backplane to read routing data directly from the central table in the switch controller. Each interface card builds and maintains a routing information table in its own local memory that only includes a routing information for the destination addresses that the interface card is most likely to receive.
摘要翻译： 提供一种用于管理切换装置内的数据流的方法和装置。 交换设备包括连接到公共背板的网络接口卡。 每个接口卡被配置为通过维持“挂起”队列来支持背板的最大传输速率来跟踪已经接收到但是尚未确定适当的路由目的地的数据。 开关装置包括维持中央卡/端口到地址表的开关控制器。 当接口卡接收到具有接口卡不知道的目的地地址的数据时，接口卡通过与背板分离的总线执行直接存储器访问，以直接从交换机控制器中的中央表读取路由数据。 每个接口卡在其本地存储器中构建并维护路由信息表，其中仅包括接口卡最可能接收的目的地地址的路由信息。
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公开(公告)号：US06427185B1
公开(公告)日：2002-07-30
申请号：US08896485
申请日：1997-07-17
IPC分类号： G06F1208
CPC分类号： H04L49/901 , H04L29/06 , H04L47/10 , H04L49/90 , H04L49/9063
摘要： A method and apparatus for managing the flow of data within a switching device is provided. The switching device includes network interface cards connected to a common backplane. Each interface card is configured to support the maximum transfer rate of the backplane by maintaining a “pending” queue to track data that has been received but for which the appropriate routing destination has not yet been determined. The switching device includes a switch controller that maintains a central card/port-to-address table. When an interface card receives data with a destination address that is not known to the interface card, the interface card performs a direct memory access over a bus that is separate from the backplane to read routing data directly from the central table in the switch controller. Each interface card builds and maintains a routing information table in its own local memory that only includes routing information for the destination addresses that the interface card is most likely to receive.
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公开(公告)号：US07031296B1
公开(公告)日：2006-04-18
申请号：US10330640
申请日：2002-12-27
IPC分类号： H04L12/00
CPC分类号： H04L49/25 , H04L49/252 , H04L49/254 , H04L49/30 , H04L49/3009 , H04L49/3036 , H04L49/3045 , H04L49/40 , H04L49/90 , H04L49/901
摘要： A method and apparatus for managing the flow of data within a switching device is provided. The switching device includes network interface cards connected to a common backplane. Each interface card is configured to support the maximum transfer rate of the backplane by maintaining a “pending” queue to track data that has been received but for which the appropriate routing destination has not yet been determined. The switching device includes a switch controller that maintains a central card/port-to-address table. When an interface card receives data with a destination address that is not known to the interface card, the interface card performs a direct memory access over a bus that is separate from the backplane to read routing data directly from the central table in the switch controller. Each interface card builds and maintains a routing information table in its own local memory that only includes routing information for the destination addresses that the interface card is most likely to receive.
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公开(公告)号：US6026096A
公开(公告)日：2000-02-15
申请号：US680568
申请日：1996-07-12
申请人： H. Earl Ferguson , Michael Noll , Randy Ryals
发明人： H. Earl Ferguson , Michael Noll , Randy Ryals
IPC分类号： H04L12/433 , H04L25/02 , H04J3/00
CPC分类号： H04L25/0262 , H04L12/433
摘要： A method and apparatus for a node being inserted into a token ring local area network to sense the data transmission speed of the token ring LAN and automatically setting the data transmission speed of the node to match the data transmission speed of the token ring LAN. The token ring LAN may operate at either 4 megabits per second or 16 megabits per second. The node recovers data transmitted on the token ring, and determines, based thereon, the speed of the data transmission and configures the speed at which the node transmits and receives data to/from the token ring network accordingly.
摘要翻译： 一种用于将节点插入到令牌环局域网中以感测令牌环LAN的数据传输速度并自动设置节点的数据传输速度以匹配令牌环LAN的数据传输速度的方法和装置。 令牌环LAN可以以每秒4兆比特或16兆比特每秒的速率操作。 节点恢复在令牌环上发送的数据，并且基于此确定数据传输的速度，并且配置节点相应地向/从令牌环网络发送数据的速度。
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10.发明授权
公开(公告)号：US5732080A
公开(公告)日：1998-03-24
申请号：US501483
申请日：1995-07-12
CPC分类号： H04L12/5601 , H04L49/104 , H04L49/256 , H04L49/309 , H04Q11/0478 , H04L49/351
摘要： A method and apparatus for controlling data flow within a switching device are provided. The switching device includes a cell-switched backplane. Both packet switched and cell switched network interface cards may be coupled to the cell-switched backplane. A destination tag is created for each unique destination port and for each unique set of destination ports. The destination tags are used to index a master destination tag table. The entry of the master destination tag table that corresponds to a given destination tag includes a destination mask that indicates which ports are destination ports the given destination tag. Local tables are built and maintained within each network interface card based on the information contained in the master destination tag table. When a network interface receives data from an external device, the network interface determines the destination tag associated with the data. Once the destination tag is determined, it is used as an index to the locally stored tables to determine whether the data should be forwarded to any local ports, and whether the data should be sent over the cell-switched backplane to other network interfaces within the switching device. When a network interface receives data over the backplane, the network interface uses the destination tag as an index to a locally stored table to determine to which local ports the data should be sent. Tables also establish correlations between destination tags and control information for converting data between packets and cells.
摘要翻译： 提供一种用于控制切换装置内的数据流的方法和装置。 交换设备包括小区交换背板。 分组交换和小区交换网络接口卡都可以耦合到小区交换背板。 为每个唯一目标端口和每个唯一的目标端口集创建一个目标标签。 目的地标签用于索引主目标标签表。 对应于给定目的地标签的主目的地标签表的条目包括目的掩码，其指示哪些端口是给定目的地标签的目的地端口。 根据主目标标签表中包含的信息，在每个网络接口卡内构建和维护本地表。 当网络接口从外部设备接收数据时，网络接口确定与数据相关联的目的地标签。 一旦确定了目的地标签，就将其用作本地存储表的索引，以确定数据是否应转发到任何本地端口，以及数据是否应通过小区交换背板发送到其中的网络接口 开关装置。 当网络接口通过背板接收数据时，网络接口使用目标标签作为本地存储表的索引，以确定应向哪些本地端口发送数据。 表格还建立了目标标签和控制信息之间的相关性，以便在数据包和单元之间转换数据。
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