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| Number | Title | Issue Date |
| 6959398 | Universal asynchronous boundary module An application specific integrated circuit (ASIC) employs various logic blocks. The blocks may include logic circuits that operate at different clock rates. Consequently, an interface logic block may be needed to efficiently transfer signals from one frequency clock... | 10/25/2005 |
| 6954810 | Transparent switch A transparent switch is able to emulate the arbitration and addressing steps for devices that are normally connected to a bus-type communications network. The switch is connected to the devices in a star-type arrangement, with each device connected to a separate por... | 10/11/2005 |
| 6779043 | Network address manager A network device includes a content addressable memory (CAM). The CAM may be accessed by a host processor. The host processor stores active device addresses in the CAM. Each device address is associated with one of the network switch ports. If the network switch rec... | 08/17/2004 |
| 6668299 | Software interface between a parallel bus and a packet network A bridge device, for coupling a parallel bus to a packet network, includes a bus interface adapter, coupled to the parallel bus so as to receive bus cycles from a master device on the bus. An outbound packet register, having a bus address in an address sp... | 12/23/2003 |
| 6529513 | Method of using static maps in a virtual private network A method and system for providing routing information for use in virtual private networks is disclosed. The method supports a variety of different secure network topologies. According to the method a static map is generated including information on each s... | 03/04/2003 |
| 6459698 | Supporting mapping of layer 3 priorities in an infiniband ™ network A router is configured for sending and receiving data packets on an InfiniBand™ network and acts as a bridge between an IP network and the InfiniBand™ network. The router is configured to receive an Internet Protocol (IP) data packet having an IP head... | 10/01/2002 |
| 6430626 | Network switch with a multiple bus structure and a bridge interface for transferring network data between different buses A network switch includes a plurality of first network ports coupled to a first bus, a plurality of second network ports coupled to a second bus, a bridge interface enabling data transfer between the buses, a switch manager controlling the flow of network... | 08/06/2002 |
| 6389480 | Programmable arbitration system for determining priority of the ports of a network switch A programmable arbitration system including control logic to select one of several arbitration schemes for selecting the ports of a network switch, a memory to store priority values indicating the relative priority of each of the ports, monitor logic to m... | 05/14/2002 |
| 6304988 | Scan testable circuit arrangement A circuit arrangement utilizes a common bus for functional operations of logic circuits and for scan testing the logic circuits. In one embodiment, input/output ports and scan test ports of the logic circuits are switchably coupled to a bus. For functiona... | 10/16/2001 |
| 6260073 | Network switch including a switch manager for periodically polling the network ports to determine their status and controlling the flow of data between ports A network switch including one or more network ports for receiving and transmitting data is disclosed. The network switch also includes a processor, a switch manager, and memory. Each port includes a network interface, a data bus interface, and a processo... | 07/10/2001 |
| 6185554 | Methods for searching a knowledge base A method and apparatus is provided for searching a knowledge base to determine whether a search object matches any of a plurality of knowledge base entries. Initially, at least one search object bit is selected and examined to determine whether the knowle... | 02/06/2001 |
| 6098109 | Programmable arbitration system for determining priority of the ports of a network switch A programmable arbitration system including control logic to select one of several arbitration schemes for selecting the ports of a network switch, a memory to store priority values indicating the relative priority of each of the ports, monitor logic to m... | 08/01/2000 |
| 6098110 | Network switch with a multiple bus structure and a bridge interface for transferring network data between different buses 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... | 08/01/2000 |
| 6041427 | Scan testable circuit arrangement A circuit arrangement utilizes a common bus for functional operations of logic circuits and for scan testing the logic circuits. In one embodiment, input/output ports and scan test ports of the logic circuits are switchably coupled to a bus. For functiona... | 03/21/2000 |
| 5999530 | Method and apparatus for transparent intermediate system based filtering on a LAN of multicast packets A bridge (62) capable of reducing unwanted WAN multicast packet traffic in a LAN and an associated method and an associated LAN is disclosed. The bridge examines the contents of WAN multicast query and report packets and WAN multicast router-to-router dis... | 12/07/1999 |
| 5825775 | Method and apparatus for managing an integrated router/hub A method and apparatus for generating a display containing information about both the local and remote traffic handled by an integrated router/hub is provided. An integrated router/hub routes local messages between devices on a first local area network, a... | 10/20/1998 |
| 5825774 | Packet characterization using code vectors A method and apparatus for increasing the throughput of a communications internetworking device. The method involves the generating, by internetworking device hardware, of a predetermined code vector in response to the current state of the communications ... | 10/20/1998 |
| 5818838 | Method and apparatus for transparent intermediate system based filtering on a LAN of multicast packets A bridge (62) capable of reducing unwanted WAN multicast packet traffic in a LAN is disclosed. The bridge examines the contents of WAN multicast query and report packets and includes this information in its filtering database (88). The bridge designates p... | 10/06/1998 |
| 5818845 | Hybrid access system having channel allocation and prioritized polling schemes An asymmetric network communication system for use in a client-server environment having independent forward and return channels operating at different speeds and/or under different protocols on the same or different communication media to provide efficie... | 10/06/1998 |
| 5813001 | Method for performing optimized intelligent searches of knowledge bases using submaps associated with search objects A method and apparatus is provided for searching a knowledge base to determine whether a search object matches any of a plurality of knowledge base entries. Initially, at least one search object bit is selected and examined to determine whether the knowle... | 09/22/1998 |
| 5809076 | Method for automatically independently providing asynchronous brouter address information to remote control units A network configuration communication system and method comprising at least one brouter for automatically broadcasting its address and other network configuration information and at least one remote control device for receiving brouter broadcasts and auto... | 09/15/1998 |
| 5777996 | Inter-repeater backplane for allowing hot-swapping of individual repeater circuits An inter-repeater backplane that allows seamless integration of multiple repeaters into a single hub and wherein each repeater may be swapped out without causing the backplane to crash, hang-up or pass error messages. The mixed signal state machines opera... | 07/07/1998 |
| 5754547 | Routing method and system using an internet protocol Routing methods, using an Internet protocol, which allows free alteration of the connection of a terminal between subnetworks such as local area networks (LANs) without necessitating modification of IP (Internet Protocol) addresses. The subnetworks are un... | 05/19/1998 |
| 5696763 | Multicast routing technique Multicast video services are provided in a network having a star topology. The network illustratively compromises a switched hub having a shared transmission medium and a plurality of ports. An Ethernet segment is connected to each port. Client stations b... | 12/09/1997 |
| 5689512 | ATM cell interface and method for dispatching an ATM cell A communication network. The communication network has an ATM network portion. The communication network has an ATM cell interface in communication with the ATM network portion. The communication network also has a first general purpose computer connected... | 11/18/1997 |
| 5590201 | Programmable source address locking mechanism for secure networks In a managed repeater having an address learn capability wherein receipt at a particular port of a data packet having a received source address different from a stored source address associated with the particular port replaces the stored source address w... | 12/31/1996 |
| 5452291 | Combination brouter and cluster controller An apparatus for transmitting data from a first device to a second device is provided. The invention is suitable for use in a system having first and second communications media. The apparatus includes a network interface coupled to the first medium for r... | 09/19/1995 |
| 5408469 | Routing device utilizing an ATM switch as a multi-channel backplane in a communication network A data communications network providing for a multiport router and providing for use of an asynchronous transfer mode (ATM) switch or the like as a routing backplane or packet switching engine. A router front end formats ATM cells including providing rout... | 04/18/1995 |
| 4716562 | Telephone system An information transfer system is described for use in a telephone system wherein full duplex digital signal bursts containing a plurality of different types of information are transmitted between a central office and selected locations outside the system... | 12/29/1987 |
