| Patent Number |
Title Of Patent |
Date Issued |
| 7139250 |
Advanced ethernet auto negotiation |
November 21, 2006 |
| A port on a network device engages in auto-negotiation on a network link during a first operational state to select a transmission mode, either half duplex or full duplex. If half duplex operation is selected, the port commences half duplex operation in a second operational state. Du |
| 6853622 |
Link aggregation repeater process |
February 8, 2005 |
| An aggregate link system and process is provided with cooperating link aggregation member devices defining a link aggregation. An connected devices is provided. Network links connect the connected devices to each of the link aggregation member devices. One or more of the network links |
| 6804721 |
Multi-point link aggregation spoofing |
October 12, 2004 |
| A system with at least one, and preferably at least two, end devices that operates according to a point-to-point protocol such as the IEEE standard 802.3ad. The two end devices communicate with each other through a trunk cluster formed from a plurality of cluster devices. Each of the clu |
| 6754173 |
Trunk arrangement in a computer network with intra trunk switch connections |
June 22, 2004 |
| A trunk switch of a trunk cluster for connecting a plurality of edge devices to each other, where each edge device can communicate with all the other edge devices through all of the trunk switches. Each trunk switch contains an intra cluster port and intra cluster links connect the intra |
| 6735210 |
Transmit queue caching |
May 11, 2004 |
| A computer network switch includes a receiving module for receiving packets, a packet memory with a plurality of buffer cells with each of the buffer cells having a buffer descriptor. A descriptor free pool lists available buffer descriptors that can be used for new incoming packets. A |
| 6721787 |
System and method for wireless hot-synchronization of a personal digital assistant |
April 13, 2004 |
| A wireless hot-sync system includes a personal digital assistant (PDA) having a transceiver for communicating over a wireless link, a hot-sync server having a transceiver for communicating with the PDA over the wireless link and a network interface for communicating with devices on a |
| 6687751 |
Multi-point link aggregation spoofing |
February 3, 2004 |
| A system with at least one, and preferably at least two, end devices that operates according to a point-to-point protocol such as the IEEE standard 802.3ad. The two end devices communicate with each other through a trunk cluster formed from a plurality of cluster devices. Each of the clu |
| 6621790 |
Link aggregation repeater process |
September 16, 2003 |
| An aggregate link system is provided with cooperating link aggregation member devices defining a link aggregation. An end device is provided. Network links connect the end device to each of the link aggregation member devices. One or more of the network links define an aggregate link. |
| 6608812 |
Trunk arrangement in a computer network with intra trunk switch connections |
August 19, 2003 |
| A trunk switch of a trunk cluster for connecting a plurality of edge devices to each other, where each edge device can communicate with all the other edge devices through all of the trunk switches. Each trunk switch contains an intra cluster port and intra cluster links 35 connect the |
| 6580697 |
Advanced ethernet auto negotiation |
June 17, 2003 |
| A port on a network device engages in auto-negotiation on a network link during a first operational state to select a transmission mode, either half duplex or full duplex. If half duplex operation is selected, the port commences half duplex operation in a second operational state. During |
| 6570881 |
High-speed trunk cluster reliable load sharing system using temporary port down |
May 27, 2003 |
| A packet based high-speed communications mesh is disclosed including a plurality of switches trunked network interfaces including links connecting the switches to form a trunk cluster. Edge devices are connected to the trunk cluster via trunked links. The trunked links provide a phys |
| 6560237 |
Packet order assurance mechanism |
May 6, 2003 |
| Packets received by a network device such as a switch are queued to either a multicast or unicast queue depending on whether a valid mapping of the packet destination address to an output port of the device exists. Each queued packet is marked with a service era during which the message |
| 6556579 |
Method and apparatus for detecting duplicate buffers in a descriptor based multi-port queue |
April 29, 2003 |
| A main data memory is provided in a network device and includes a plurality of buffers for storing data packets. A plurality of descriptors, or pointers, point to the individual buffers. A status of the descriptors is stored in a descriptor reference memory. The status information includ |
| 6532503 |
Method and apparatus to detect lost buffers with a descriptor based queue |
March 11, 2003 |
| A main data memory is provided in a network device and includes a plurality of buffers for storing data packets. A plurality of descriptors, or pointers, point to the individual buffers. A status of the descriptors is stored in a descriptor reference memory. The status information includ |
| 6397260 |
Automatic load sharing for network routers |
May 28, 2002 |
| A network is operated such that message forwarding traffic is shared among routers in a load-sharing set. The routers are respectively associated with different non-overlapping subspaces of a source address space from which source addresses of source nodes on the network are drawn, and e |
| 6347073 |
Method and system for controlling data transfer between a logical switch set and outside nodes |
February 12, 2002 |
| A plurality of independent control lines are used by I/O modules to determine which switch of a redundant switch set is the active or primary switch. Each line is driven by a different source. Each of these control lines are driven by one of a plurality of judges an each judge can read |
| 6195351 |
Logical switch set |
February 27, 2001 |
| A Logical Switch Set (LSS) is provided comprising two or more switches that act as a single packet forwarding device with specific connection rules. The single packet forwarding device is a single logical unit. The LSS may be used as either a redundant switch set (RSS) or as a Load Shari |
| 6195349 |
Scalable logical LAN |
February 27, 2001 |
| A packet based high speed mesh forms a trunk cluster. The trunk cluster is constructed with a set of loosely coupled switches, a configuration protocol, trunked network interfaces, and optionally a reachablilty protocol. The trunk cluster provides a Logical LAN service. Each switch in |
| 6181681 |
Local area network media access controller layer bridge |
January 30, 2001 |
| A device, system and method for a LAN is disclosed. The device includes a plurality of ports to connect to units such as host end user units. Each of the ports is connected to arbiter/aggregation device. The arbiter/aggregator device is connected to a high speed trunk for moving data |
| 6145010 |
Method and apparatus for bandwidth control in an over subscribed computer network switch |
November 7, 2000 |
| A switch of a computer network with a plurality of dual speed Ethernet client ports and at least one high speed Ethernet uplink port. The combined data rate of the Ethernet dual speed client ports has a maximum value which is higher than the data rate of the Ethernet uplink port. The |
| 6058116 |
Interconnected trunk cluster arrangement |
May 2, 2000 |
| An arrangement of trunk clusters and a method for interconnecting trunk clusters wherein the interconnection method has no single point of failure, the bandwidth between trunk clusters is not limited by the throughput of a single switch, and faults are contained within each trunk clu |
| 5923851 |
Method and apparatus for interconnecting network devices in a networking hub |
July 13, 1999 |
| A system for interconnecting line cards attached to a networking hub is disclosed. The disclosed system operates by forming backplane networks between the line cards using shared data path resources within the hub. Each line card attached with the hub describes its hub internal networkin |
| 5809253 |
Method and apparatus for interconnecting network devices in a networking hub |
September 15, 1998 |
| A system for interconnecting line cards attached to a networking hub is disclosed. The disclosed system operates by forming backplane networks between the line cards using shared data path resources within the hub. Each line card attached with the hub describes its hub internal networkin |
| 5675735 |
Method and apparatus for interconnecting network devices in a networking hub |
October 7, 1997 |
| A system for interconnecting line cards attached to a networking hub is disclosed. The disclosed system operates by forming backplane networks between the line cards using shared data path resources within the hub. Each line card attached with the hub describes its hub internal networkin |
