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1. 发明授权

EP0854608B1 Network switch with shared memory system 失效
标题翻译：与交错存储器系统网络交换机
公开(公告)号：EP0854608B1
公开(公告)日：2004-12-29
申请号：EP97310676.8
申请日：1997-12-30
申请人： Compaq Computer Corporation
发明人： Mayer, Dale J. , Richter, Roger , Witkowski, Michael L. , Kotzur, Gary B. , Hareski, Patricia E. , Walker, William J.
IPC分类号： H04L12/28
CPC分类号： H04L49/103 , H04L49/201 , H04L49/205 , H04L49/254 , H04L49/351

2. 发明授权

EP0854613B1 A network switch with a multiple bus structure and a bridge interface for transferring network data between different buses 失效
标题翻译：网络交换网络与Mehrfachbusstruktur和桥接口，用于不同总线之间Übetragung网络数据
公开(公告)号：EP0854613B1
公开(公告)日：2004-11-17
申请号：EP97310663.6
申请日：1997-12-30
申请人： Compaq Computer Corporation
发明人： Witkowski, Michael L. , Chandler, Gregory T. , Khan, Mohammed A. , Kotzur, Gary B. , Mayer, Dale J. , Walker, William J.
IPC分类号： H04L12/44 , H04L12/40 , H04L12/46 , H04L12/56
CPC分类号： H04L49/351 , H04L49/205 , H04L49/354 , Y10S370/911

3. 发明授权

EP0854615B1 Multiport polling system for a network switch 失效
标题翻译：一种用于在网络交换网络多端系统轮询
公开(公告)号：EP0854615B1
公开(公告)日：2004-11-10
申请号：EP97310666.9
申请日：1997-12-30
申请人： Compaq Computer Corporation
发明人： Walker, William J. , Kotzur, Gary B. , Witkowski, Michael L. , Hareski, Patricia E. , Mayer, Dale J.
IPC分类号： H04L12/44 , H04L29/04 , H04L12/40 , H04L12/56
CPC分类号： H04L49/351 , H04L49/254 , H04L49/354

4. 发明公开

EP0854612A3 Method and system for performing concurrent read and write cycles in a network switch 失效
标题翻译：方法和系统，用于在网络交换结构同时执行读和写周期
公开(公告)号：EP0854612A3
公开(公告)日：1999-06-16
申请号：EP97310662.8
申请日：1997-12-30
申请人： Compaq Computer Corporation
发明人： Walker, William J. , Kotzur, Gary B. , Hareski, Patricia E. , Witkowski, Michael L. , Mayer, Dale J.
IPC分类号： H04L12/44 , H04L29/04 , H04L12/40 , H04L12/56
CPC分类号： H04L49/351 , H04L49/254 , H04L49/354
摘要： A system for performing concurrent read and write cycles in a network switch. The network switch includes several network ports, a data bus and a switch manager to execute a concurrent read and write cycle on the data bus by asserting a first port number to identify a source port followed by a second port number to identify a destination port. Each of the ports includes a network interface for sending and receiving data packets and a data interface to store the first port number, to assert data received from the network interface onto the data bus if that port is identified by the first port number, and to retrieve data from the data bus for transmission by the network interface if that port is identified by the second port number. In this manner, data is transferred directly between a source and a destination port without being buffered in the switch manager. The bandwidth of the data bus is increased since data is transferred only once on the data bus. Latches are provided for the ports to latch the read port number to allow that write port number to be asserted during the cycle. A method of executing a concurrent read and write cycle includes the steps of asserting a first port number to identify a source port, latching the first port number, asserting a second port number to identify a destination port, and concurrently writing and reading the data on the data bus.

5. 发明公开

EP0854606A2 Network switch with statistics read accesses 失效
标题翻译： Netzwerkkoppelfeld mit Lesezugriffen auf Statistiken
公开(公告)号：EP0854606A2
公开(公告)日：1998-07-22
申请号：EP97310652.9
申请日：1997-12-30
申请人： Compaq Computer Corporation
发明人： Hareski, Patricia E. , Walker, William J. , Kotzur, Gary B. , Mayer, Dale J. , Witkowski, Michael L.
IPC分类号： H04L12/24 , H04L12/44 , H04L12/40 , H04L12/56
CPC分类号： H04L41/26 , H04L41/046 , H04L41/24 , H04L49/201 , H04L49/351 , H04L49/354
摘要： A network switch including a plurality of network ports for receiving and transmitting data, where each port includes at least one statistics register for storing statistics information, such as Ethernet statistical and configuration information. The switch also includes a switch manager, which further includes a memory, retrieval logic for detecting a statistics request signal and for respondingly retrieving the statistics information for storage in the memory, and response logic for asserting a statistics response signal after the statistics information is stored. A processor is coupled to the switch manager through a bus, where the processor asserts the statistics request signal and then detects assertion of the statistics response signal. Upon detecting the response signal, the processor retrieves the statistics information from the memory. In this manner, the processor is removed from direct connection to the statistics registers and free to complete other tasks while the information is being gathered by the switch manager, thereby increasing the efficiency of the processor and of the network switch. Each port preferably includes a network interface, a processor port interface for enabling the switch manager to retrieve the statistical information, and a data bus interface for network traffic. The switch manager thus includes two separate bus connections to each of the ports, so that statistical reads do not interfere with network data packet flow.
摘要翻译：一种网络交换机，包括用于接收和发送数据的多个网络端口，其中每个端口包括至少一个用于存储诸如以太网统计信息和配置信息的统计信息的统计寄存器。交换机还包括开关管理器，其还包括存储器，用于检测统计信号请求信号的检索逻辑和用于响应地检索用于存储在存储器中的统计信息，以及用于在存储统计信息之后断言统计响应信号的响应逻辑。处理器通过总线耦合到交换机管理器，其中处理器断言统计请求信号，然后检测统计响应信号的断言。在检测到响应信号时，处理器从存储器检索统计信息。以这种方式，处理器从直接连接到统计寄存器被移除，并且在交换管理器收集信息的同时可以自由地完成其他任务，从而提高处理器和网络交换机的效率。每个端口优选地包括网络接口，用于使交换机管理器能够检索统计信息的处理器端口接口和用于网络业务的数据总线接口。因此，交换管理器包括到每个端口的两个单独的总线连接，使得统计读取不会干扰网络数据分组流。

6. 发明授权

EP0854606B1 Network switch with statistics read accesses 失效
标题翻译：网络交换网与读访问统计
公开(公告)号：EP0854606B1
公开(公告)日：2004-10-27
申请号：EP97310652.9
申请日：1997-12-30
申请人： Compaq Computer Corporation
发明人： Hareski, Patricia E. , Walker, William J. , Kotzur, Gary B. , Mayer, Dale J. , Witkowski, Michael L.
IPC分类号： H04L12/24 , H04L12/44 , H04L12/40 , H04L12/56
CPC分类号： H04L41/26 , H04L41/046 , H04L41/24 , H04L49/201 , H04L49/351 , H04L49/354

7. 发明公开

EP0854615A3 Multiport polling system for a network switch 失效
标题翻译：一种用于在网络交换网络多端系统轮询
公开(公告)号：EP0854615A3
公开(公告)日：1999-06-16
申请号：EP97310666.9
申请日：1997-12-30
申请人： Compaq Computer Corporation
发明人： Walker, William J. , Kotzur, Gary B. , Witkowski, Michael L. , Hareski, Patricia E. , Mayer, Dale J.
IPC分类号： H04L12/44 , H04L29/04 , H04L12/40 , H04L12/56
CPC分类号： H04L49/351 , H04L49/254 , H04L49/354
摘要： A multiport polling system for a network switch including a plurality of network ports, each including receive and transmit buffers. Each port includes port status logic for providing status signals indicative of whether a corresponding port has received data from a network device and whether a corresponding port has available space to receive data to transmit to a network device. The network switch further includes a switch manager for controlling data flow between the ports. The switch manager includes polling logic for periodically polling the port status logic of each port for receiving the status signals, and a memory for storing values indicative of the status signals for each port. In this manner, all of the ports are simultaneously polled in a singe query and the receive and transmit status of each port is maintained in the memory. This facilitates arbitration and control logic, which continuously reviews the memory to determine when to retrieve data from a source port and when to transmit data to one or more destination ports. The ports are preferably implemented with quad cascade devices for providing multiplexed status signals.

8. 发明公开

EP0854613A3 A network switch with a multiple bus structure and a bridge interface for transferring network data between different buses 失效
标题翻译：网络交换网络与Mehrfachbusstruktur和桥接口，用于不同总线之间Übetragung网络数据
公开(公告)号：EP0854613A3
公开(公告)日：1999-06-16
申请号：EP97310663.6
申请日：1997-12-30
申请人： Compaq Computer Corporation
发明人： Witkowski, Michael L. , Chandler, Gregory T. , Khan, Mohammed A. , Kotzur, Gary B. , Mayer, Dale J. , Walker, William J.
IPC分类号： H04L12/44 , H04L12/40 , H04L12/46 , H04L12/56
CPC分类号： H04L49/351 , H04L49/205 , H04L49/354 , Y10S370/911
摘要： A network switch including a plurality of first network ports, a plurality of second network ports, a first bus, a second bus and a bridge interface coupled between the first and second buses. The first ports receive and transmit network data according to a first network protocol and the second ports receive and transmit network data according to a second network protocol. The first and second buses operate according to different bus standards. The bridge interface enables data transfer between the first and second buses and thus between the networks operating at different protocols. The switch includes a switch manager that controls the flow of network data and a processor for performing supervisory and control functions. The bridge interface includes receive buffers and transmit buffers assigned to respective ports. During packet data transfer operations across the first bus, the bridge interface emulates a first network port. During packet data transfer operations across the second bus, the bridge interface primarily acts as a slave to the second network ports by storing control lists for execution by the second network ports. This processor is relieved of performing necessary overhead functions associated with the second bus and is thus freed to perform other important switch functions.

9. 发明公开

EP0910195A3 A network communication device including bonded ports for increased bandwidth 有权
标题翻译：一种网络通信设备，包括增加带宽的绑定端口
公开(公告)号：EP0910195A3
公开(公告)日：1999-05-12
申请号：EP98307556.5
申请日：1998-09-17
申请人： Compaq Computer Corporation
发明人： Witkowski, Michael L. , Mayer, Dale J. , Walker, William J. , Roller, Kirk D. , Hareski, Patricia E. , Kotzur, Gary B.
IPC分类号： H04L12/46 , H04L29/00
CPC分类号： H04L12/467 , H04L49/201 , H04L49/205 , H04L49/254 , H04L49/351 , H04L49/354 , H04L69/14
摘要： A network communication device including port control circuitry for controlling packet flow between the ports of the device, where the port control circuitry includes a port manager that directs packets between the ports and port bonding circuitry that bonds two or more ofthe ports into a bonded port set. For each packet to be sent via the bonded port set, the port bonding circuitry selects one of the bonded ports for transmitting the packet. More than one bonded port set may be defined in a given communication device, and each bonded port set may include from two ports up to all the ports of the device, as long as each port is included in only one bonded port set. One or more port bonding registers are provided to identify which ofthe plurality ofports are bonded in each bonded port set. In one embodiment, the bonded ports are selected on a packet by packet basis so as to achieve a relatively even distribution of packets sent by each bonded port. In an alternative embodiment bonded ports are assigned to packet source identifiers so as to achieve a relatively even distribution of source identifiers among the bonded ports. If bonded ports are assigned to particular source identifiers, then the traffic is preferably monitored and the assignments are periodically adjusted to achieve even distribution of packet flow on the bonded link. The bonded ports may have different bandwidths, in which case traffic is distributed on a proportionate basis.
摘要翻译：一种网络通信设备，包括用于控制设备的端口之间的分组流的端口控制电路，其中端口控制电路包括在端口之间引导分组的端口管理器和将两个或更多个端口绑定到绑定端口集的端口绑定电路。对于要通过绑定端口集发送的每个分组，端口绑定电路选择一个绑定端口来发送分组。可以在给定的通信设备中定义多于一个绑定端口组，并且每个绑定端口组可以包括从两个端口直到设备的所有端口，只要每个端口仅包含在一个绑定端口组中。提供一个或多个端口绑定寄存器以标识在每个绑定端口组中绑定了多个端口中的哪一个。在一个实施例中，绑定端口是逐个分组地选择的，以便实现由每个绑定端口发送的分组的相对均匀分布。在替代实施例中，将绑定端口分配给分组源标识符，以便实现绑定端口中源标识符的相对均匀分布。如果将绑定端口分配给特定的源标识符，则优选监视流量并周期性地调整分配以实现绑定链路上的分组流的均匀分布。绑定端口可能具有不同的带宽，在这种情况下，流量按比例分配。

10. 发明公开

EP0910195A2 A network communication device including bonded ports for increased bandwidth 有权
标题翻译： Netzwerkkommunikationsvorrichtung mit gebundenen TorenfürerhöhteBandbreite
公开(公告)号：EP0910195A2
公开(公告)日：1999-04-21
申请号：EP98307556.5
申请日：1998-09-17
申请人： Compaq Computer Corporation
发明人： Witkowski, Michael L. , Mayer, Dale J. , Walker, William J. , Roller, Kirk D. , Hareski, Patricia E. , Kotzur, Gary B.
IPC分类号： H04L12/46 , H04L29/00
CPC分类号： H04L12/467 , H04L49/201 , H04L49/205 , H04L49/254 , H04L49/351 , H04L49/354 , H04L69/14
摘要： A network communication device including port control circuitry for controlling packet flow between the ports of the device, where the port control circuitry includes a port manager that directs packets between the ports and port bonding circuitry that bonds two or more ofthe ports into a bonded port set. For each packet to be sent via the bonded port set, the port bonding circuitry selects one of the bonded ports for transmitting the packet. More than one bonded port set may be defined in a given communication device, and each bonded port set may include from two ports up to all the ports of the device, as long as each port is included in only one bonded port set. One or more port bonding registers are provided to identify which ofthe plurality ofports are bonded in each bonded port set. In one embodiment, the bonded ports are selected on a packet by packet basis so as to achieve a relatively even distribution of packets sent by each bonded port. In an alternative embodiment bonded ports are assigned to packet source identifiers so as to achieve a relatively even distribution of source identifiers among the bonded ports. If bonded ports are assigned to particular source identifiers, then the traffic is preferably monitored and the assignments are periodically adjusted to achieve even distribution of packet flow on the bonded link. The bonded ports may have different bandwidths, in which case traffic is distributed on a proportionate basis.
摘要翻译：一种网络通信设备，包括用于控制设备端口之间的分组流的端口控制电路，其中端口控制电路包括端口管理器，该端口管理器在端口之间引导分组，并且端口连接电路将两个或多个端口绑定到绑定端口组。对于要通过绑定端口组发送的每个分组，端口绑定电路选择用于发送分组的绑定端口之一。可以在给定的通信设备中定义多个绑定端口组，并且每个绑定端口组可以包括直到设备的所有端口的两个端口，只要每个端口仅包括在一个绑定端口组中。提供一个或多个端口绑定寄存器以识别在每个绑定端口组中的多个端口中的哪一个被绑定。在一个实施例中，按照分组的方式选择绑定端口，以便实现每个绑定端口发送的分组的相对均匀的分布。在替代实施例中，绑定端口被分配给分组源标识符，以便在绑定端口之间实现源标识符的相对均匀的分布。如果绑定端口被分配给特定的源标识符，则优选地监视流量并且周期性地调整分配以实现绑定链路上的分组流的均匀分布。绑定端口可以具有不同的带宽，在这种情况下，业务量按比例分配。

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