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6977947 |
Frame-relay frame transmission circuit
This invention is intended to eliminate an operation to copy the frame-relay frame, which was written in a memory through a frame transmission processing device, into another area excluding a...
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6975646 |
Network interconnection system
A network interconnection system has a plurality of input and output ports that are connected to different networks. An input interface connected to each of the input ports converts the input...
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6975627 |
Modification of tag fields in Ethernet data packets
An Ethernet data packet including a VLAN tag header and a VLAN identification field is modified. The modification is accomplished by inserting in place of the VLAN tag header a field of the same...
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6975981 |
Method for communication with real-time remote devices over wide-area communications networks
An Improved Method for Communication with Real-time Remote Devices over Wide-area Communications Networks is disclosed. Also disclosed is a method and system that provides the remote device with...
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6967960 |
Method and apparatus for emulating a local data port
A method for receiving a signal from a local device and converting the signal to a network port packet data signal to emulate a local data signal port. Once the signal from the local device is...
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6944130 |
Method and apparatus for determining a layer 2 path in a switched network
A method and apparatus that provide for a Layer 2 path determination are disclosed. In one embodiment of the invention, a Layer 3 path between a source device and destination device is first...
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6934292 |
Method and system for emulating a single router in a switch stack
A system and method for emulating a single router in a switch stack is described. The switch stack is connected to virtual local area networks (VLANs) and comprises a number of stack devices that...
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6928480 |
Networking device and method for providing a predictable membership scheme for policy-based VLANs
A networking device and method for providing a predictable membership scheme for policy-based virtual local area networks (VLANs). In the event that identical behavior toward incoming expected and...
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6920141 |
Techniques for improving virtual channel management and maintenance in a network environment
The invention is directed to a flexible method of allocating groups of virtual circuits in a network as a virtual circuit bunch. A virtual circuit bunch of arbitrary number can be set up with the...
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6914905 |
Method and system for VLAN aggregation
A method and system for an aggregated virtual local area network (VLAN) architecture in which several VLANs in a network share the same default router address and subnet mask, but remain isolated...
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6912589 |
System and method for efficiently handling multicast packets by ignoring VLAN context
A method and system for efficiently handling forwarding of multicast packets by ignoring VLAN (virtual local area network) context during lookup. In one embodiment, the present invention receives,...
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6898183 |
Method of determining a data link path in a managed network
A mechanism for determining a data link path in a managed network between a source device and a destination device is disclosed. To determine the data link path, a mechanism determines the topology...
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6892174 |
Arrangement for testing a network device by interfacing a low speed emulation system with high speed CPU
A system is provided for delaying a ready signal from an emulation system, configured for emulating a network device, to a central processing unit (CPU) for initiating an access cycle of the CPU....
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6868086 |
Data packet routing
A distributed device has external ports and a configurable internal communications network interconnecting the external ports. The network is configured to transmit a data packet received from one...
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6845387 |
Creating virtual private connections between end points across a SAN
There is disclosed a method and architecture for establishing independent, secure, trusted sub-networks within a storage area network (SAN). These virtual private SANs allow secure, managed...
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6816508 |
Method for mapping a service attribute pertaining to a connection oriented communications network in a connectionless communications network and vice versa
The method makes it possible to image a quality of service feature (distinguishing between high-priority and low-priority data streams) that is available in a connection-oriented communication...
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6807149 |
Method and system for LEC resiliency with fast failover
To insure connection resiliency two LECs are defined in normal practice in which a lengthy and extensive recovery procedure is enforced in case of an ATM interface failure. In the present invention...
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6792502 |
Microprocessor having a content addressable memory (CAM) device as a functional unit therein and method of operation
A microprocessor architecture ( 310 ) has a plurality of functional units arranged in a parallel manner between one or more source buses ( 412 and/or 414 ) and one or more result buses ( 490 )....
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6789104 |
Communications system and method with emulated-LAN assignment capabilities
A communication system and method which automatically assign an appropriate emulated LAN (ELAN) domain to each attached end station. In the LAN emulation configuration server, an ATM address...
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6788696 |
Transparent QoS using VC-merge capable access modules
A method and a system for providing transparent Quality of Service (QoS) and reducing bandwidth usage in an ATM access network uses that uses VC-merging and delivery of content directly through the...
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6781981 |
Adding DSL services to a digital loop carrier system
An improved digital loop carrier system for transporting voice and DSL data signals in the local loop. The digital loop carrier system includes a remote digital terminal having an interface...
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6775290 |
Multiport network switch supporting multiple VLANs per port
A novel method of enabling a port of a network switch to support connections with multiple VLANs. The method comprises storing VLAN data indicating a plurality of VLAN identifiers corresponding to...
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6757298 |
VLAN trunking over ATM PVCs (VTAP)
Virtual Local Area Network (VLAN) trunking over Asychronous Transfer Mode (ATM) Permanent Virtual Circuits (PVC), defined as VTAP, allows for aggregation of multiple VLAN traffic into a single data...
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6738377 |
System and method for dynamic micro placement of IP connection filters
Virtual Private Networking (VPN) is an emerging technology area enabling e-business on the Internet. A key underlying VPN technology is IP Security (IPsec), for providing private (encrypted and...
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6731639 |
Multi protocol label switching for multiple access segments
A communication system having a multiple access segment ( 2,48 ), which comprises a plurality of end systems ( 6,44 ) and a switching node ( 4,46 ) configured such that each end system can transmit...
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6724723 |
Method of providing a signaling qualification function in a connection oriented network
A method of providing a qualification function and associated action function to be performed for a connection request or a group of connection requests. The invention is applicable to situations...
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6721270 |
Multicommodity flow method for designing traffic distribution on a multiple-service packetized network
A method is described for solving traffic engineering problems in a network. In one aspect, the invention is used in a network that has at least one QoS service class and at least one class of...
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6721282 |
Telecommunication data compression apparatus and method
A system is presented including a first telecommunication device connected to a network at a rate adjusted to improve data bandwidth while data integrity is maintained. The first telecommunication...
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6714532 |
Network connecting method and device
A network connecting device 100 comprises a LAN I/F 130 for performing communications with a LAN, a N-ISDN I/F 170 for performing a connectionless transmission, and a ATM I/F 160 for...
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6701448 |
Establishing and maintaining master and standby LAN emulation server connections to provide a fault tolerant ELAN
A system and method are disclosed for transferring an enhanced LAN Emulation Client from a first LAN Emulation Server to a second LAN Emulation Server. The addresses of the first LES and the second...
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6680945 |
Method and apparatus for support of tagging and untagging per VLAN per port
An integrated multiport switch operating in a packet switched network provides the capability via distributed egress logic to alter VLAN tags on a port by port basis. An internal rules checker...
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6671280 |
Network processor for multiprotocol data flows
A method for integrating Asynchronous Transfer Mode (ATM) and frame-based traffic flows within a telecommunications network is disclosed. The telecommunications network includes a network processor...
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6671281 |
ATM LAN emulation network having LECS for providing ATM address of LES of target ELAN
An ATM LAN emulation network is disclosed, in which a terminal can easily access an ELAN, to which he terminal was previously connected, via another ELAN. In this system, an LECS is mounted at each...
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6662208 |
System for tracking the history of channel based network devices
A method and apparatus for determining the history of at least one network device (the “given device”) in a set of channel-based network devices coupled to a network maintains a history memory...
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6661792 |
Apparatus for processing data packet of ethernet switch system and method thereof
A method and apparatus for processing a data packet of an Ethernet switch system in which packet information is transferred from a first device to a second device on the basis of field information...
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6625158 |
Method and system for enhanced communication involving emulated local area networks
Provided are a method and system for achieving enhanced performance in communications between a plurality of emulated networks overlaid onto at least one base network, wherein the communications...
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6614792 |
Proxy MPC for providing MPOA services to legacy lane clients in an asynchronous transfer mode network
A proxy MPOA client in a VLAN that is otherwise populated by legacy LECs such that the MPOA services for these LECs are provided centrally by the proxy MPC. A standard MPC enabled edge device is...
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6611525 |
Apparatus for and method of learning MAC addresses in a LAN emulation network
An apparatus for and a method of learning MAC addresses in a Local Area Network (LAN) Emulation (LANE) network implemented over an Asynchronous Transfer Mode (ATM) network. The LEC or LES is...
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6608831 |
Breakout/break-in hybrid network system
A voice networking switching (VNS) appliance and methods for its use are disclosed. In a preferred embodiment, the VNS is an adjunct processor attached to a WAN node and software-configured to...
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6608834 |
System for encapsulating Ethernet frames over very high speed digital subscriber lines
An apparatus for and method of encapsulating Ethernet frame data in Very high speed Digital Subscriber Line (VDSL) frames. The VDSL frames are transmitted over a point to point VDSL link where they...
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6606323 |
Mobile MAC protocol for LAN-coupled devices interconnected by an ATM wide area network
Enhanced performance of a WAN is achieved by allowing devices to move from LAN to LAN and have the move be transparent to end user applications. This is accomplished by allowing devices to move,...
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6584107 |
Method for realizing emulated ring network structures in a communication network that is designed according to asynchronous transfer mode
ATM communication terminal devices (KE 1 . . . 4 ) of a communication network that is designed according to ATM can be inventively allocated to a ring network structure, whereby a ring network...
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6577689 |
Timing recovery system for a 10 BASE-T/100 BASE-T ethernet physical layer line interface
A phase lock loop is provided for recovering timing information from a received data signal in a 100Base-TX receiver. The phase lock loop includes a phase encoder ( 803 ) for generating a reference...
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6574242 |
Method for the transmission and control of audio, video, and computer data over a single network fabric
A local area network of devices connected to a Communication Switching Module (CSM) carry both delay-sensitive information and non-delay sensitive user data in master Ethernet packets transmitted...
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6570875 |
Automatic filtering and creation of virtual LANs among a plurality of switch ports
In a method and apparatus for performing multiprotocol switching and routing, incoming data packets are examined and the flow (i.e., source and destination) with which they are associated is...
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6563830 |
Multicast registration of all multicast flows in an asynchronous transfer mode based emulated LAN
An apparatus for and a method of implementing multicast registration in an ATM based ELAN. The present invention provides a mechanism for a LEC to register to receive all multicast group traffic...
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6546015 |
LAN emulation broadcast and unknown server
A novel BUS entity utilizing the forwarding engine in a conventional LAN switch incorporating an ATM interface. The forwarding engine is adapted to assemble Ethernet frames from ATM cells and to...
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6539019 |
Methods and apparatus for automatically connecting a dynamic host configuration protocol (DHCP) client network device to a virtual local area network (VLAN)
A method for automatically connecting a DHCP endpoint to a VLAN in an ATM network having a switch operative to provide LAN emulation for a plurality of non-ATM endpoints, the method including the...
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6526052 |
Virtual local area networks having rules of precedence
A switch for use in a communications system having multiple local area networks interconnected by multiple switches so as to be configurable into different types of virtual local area networks...
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6515993 |
Method and apparatus for manipulating VLAN tags
An integrated multiport switch operating in a packet switched network provides the capability to alter VLAN tags on a port by port basis. An internal rules checker (IRC) analyzes the header of a...
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