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81. 发明专利

CA2814829A1 LOCATION AWARE DATA NETWORK 未知
公开(公告)号：CA2814829A1
公开(公告)日：2003-09-12
申请号：CA2814829
申请日：2003-02-28
申请人： ENTERASYS NETWORKS INC
发明人： ROESE JOHN J , GRAHAM RICHARD W , GORSKY JOHN-PAUL , HARRINGTON DAVID , FRATTURA DAVID , DURAND ROGER P , FEE BRENDAN J , ALLEN ANJA A
IPC分类号： H04L12/26 , H04L9/32 , H04L12/24 , H04L29/06 , H04W12/06 , H04W64/00
摘要： A system that associates physical locations with network-linked devices in a network to which such devices are connected. This system employs a variety of techniques for establishing device location. The system configuration can vary and can include any type of data network, including LANs, MANs, Wide Area Networks (WANs), Personal Area Networks (PANs), and Home Networks. The system provides location information for particular devices to the network devices and management, and may be used in any of a variety of ways to improve configuration accuracy, control, and security. The location information may also be used to control or secure a device itself.

82. 发明专利

AU764711B2 Semi-reliable data transport 未知
公开(公告)号：AU764711B2
公开(公告)日：2003-08-28
申请号：AU6410199
申请日：1999-10-01
申请人： ENTERASYS NETWORKS INC
发明人： KEMP BRADFORD H , MCCANN BENJAMIN E
IPC分类号： H04L1/18 , H04L12/46 , H04L29/06 , H04L29/08
摘要： A new type of communication protocol provides semi-reliable transport of data over a data channel, such as over the Internet. The new type of protocol limits the number of retransmissions of unsuccessfully delivered data and may eventually "give up" on successfully delivering particular data and go on sending subsequent data to the destination. When a reliable communication protocol, such as TCP/IP is tunneled between two computers over a virtual connection which uses the new type of semi-reliable protocol, overall error control of data passing between the two computers involves elements of error control implemented by both the semi-reliable protocol and the reliable protocol. This overall error control can provide higher throughput than provided by using either a completely reliable protocol (e.g., TCP) for the virtual connection, or a completely unreliable protocol (e.g., UDP) for the virtual connection. This advantage can be even more pronounced if the data stream is compressed or encrypted before being passed over the virtual connection using a technique which maintains state from one data packet to another.

83. 发明专利

DE69530641D1 未知
公开(公告)号：DE69530641D1
公开(公告)日：2003-06-12
申请号：DE69530641
申请日：1995-07-18
申请人： ENTERASYS NETWORKS INC
发明人： LAUCK ANTHONY G , CHARNY ANNA , RAMAKRISHNAN KADANGODE K
IPC分类号： G06F15/16 , G06F15/177 , H04L12/56 , H04Q11/04

84. 发明专利

AU1460697A Distributed connection-oriented services for switched communications networks 未知
公开(公告)号：AU1460697A
公开(公告)日：1997-06-05
申请号：AU1460697
申请日：1996-11-15
申请人： ENTERASYS NETWORKS INC
发明人： DOBBINS KURT , GRANT THOMAS A , RUFFEN DAVID J , KANE LAURA , LEN THEODORE , ANDLAUER PHILIP , BAHI DAVID H , YOHE KEVIN , FEE BRENDAN , OLIVER CHRIS , CULLEROT DAVID L , SKUBISZ MICHAEL
IPC分类号： H04L12/18 , H04L12/24 , H04L12/46 , H04L12/56 , H04B3/00
摘要： Method and apparatus providing connection-oriented services for packet switched data communications networks. Directory services include distributed discovery of MAC addresses and protocol alias addresses. Topology services include a link state topology exchange among switches, which provides each switch with a complete topology graph of the network. This enables an access switch receiving a data packet to determine a complete path from a source end system to a destination end system. Another service includes resolution of broadcast frames to unicast frames, in order to reduce the amount of broadcast traffic. Policy restrictions may be applied prior to connection setup. Path determination services enable multiple paths from a source to a destination. Connection management includes source routed mapping of connections on the desired path. A distributed call rerouting service is provided wherein if a link on an active path fails, each switch receives a topology change notification and unmaps any connection involving the failed link. A broadcast/unknown service provides restricted flooding of nonresolvable packets. Furthermore, connection-oriented switching is provided based on the source and destination MAC addresses as a connection identifier. Still further, resolution of networks outside the switch domain is enabled by access switches listening for network and server route advertisements and maintaining best routes to said networks and servers. The best route metrics may be combined with best path metrics to determine a path from a first access switch to an egress switch connected to the external network.

85. 发明专利

CA2541156C SYSTEM AND METHOD FOR DYNAMIC DISTRIBUTION OF INTRUSION SIGNATURES 未知
公开(公告)号：CA2541156C
公开(公告)日：2012-02-28
申请号：CA2541156
申请日：2004-10-01
申请人： ENTERASYS NETWORKS INC
发明人： ROESE JOHN J , GRAHAM RICHARD W
IPC分类号： G06F11/30 , G06F20060101 , G06F12/14 , G06F12/16 , G06F15/18 , G06F21/00 , G08B23/00 , H04L9/32 , H04L29/06
摘要： A system and method for the dynamic distribution of intrusion signatures to aid in protecting a network system from harmful activities. The related method includes the steps of monitoring for intrusion signatures or other triggering events[401, 402], analyzing the events [403] and updating IDS signature libraries [406] as necessary. The system and method enable dynamic distribution of IDS signatures enabling improved network IDS coverage while limiting the processing and storage requirements of network devices, particularly forwarding devices such as switches and routers that may include the IDS function.

86. 发明专利

DE69636126D1 未知
公开(公告)号：DE69636126D1
公开(公告)日：2006-06-14
申请号：DE69636126
申请日：1996-11-15
申请人： ENTERASYS NETWORKS INC
发明人： DOBBINS KURT , GRANT A , RUFFEN J , KANE LAURA , LEN THEODORE , ANDLAUER PHILIP , BAHI H , YOHE KEVIN , FEE BRENDAN , OLIVER CHRIS , CULLEROT L , SKUBISZ MICHAEL
IPC分类号： H04L12/56 , H04L12/18 , H04L12/24 , H04L12/46
摘要： Method and apparatus providing connection-oriented services for packet switched data communications networks. Directory services include distributed discovery of MAC addresses and protocol alias addresses. Topology services include a link state topology exchange among switches, which provides each switch with a complete topology graph of the network. This enables an access switch receiving a data packet to determine a complete path from a source end system to a destination end system. Another service includes resolution of broadcast frames to unicast frames, in order to reduce the amount of broadcast traffic. Policy restrictions may be applied prior to connection setup. Path determination services enable multiple paths from a source to a destination. Connection management includes source routed mapping of connections on the desired path. A distributed call rerouting service is provided wherein if a link on an active path fails, each switch receives a topology change notification and unmaps any connection involving the failed link. A broadcast/unknown service provides restricted flooding of nonresolvable packets. Furthermore, connection-oriented switching is provided based on the source and destination MAC addresses as a connection identifier. Still further, resolution of networks outside the switch domain is enabled by access switches listening for network and server route advertisements and maintaining best routes to said networks and servers. The best route metrics may be combined with best path metrics to determine a path from a first access switch to an egress switch connected to the external network.

87. 发明专利

GB2409388B System and method for IEEE 802.1X user authentication in a network entry device 未知
公开(公告)号：GB2409388B
公开(公告)日：2006-02-08
申请号：GB0507284
申请日：2003-10-17
申请人： ENTERASYS NETWORKS INC
发明人： ROESE JOHN J
IPC分类号： H04L29/06 , G06F20060101 , H04L9/00 , H04L9/32 , H04L12/28
摘要： A system and method to authenticate attached functions seeking access to network services through a network entry device. The system includes a relay function of the network entry device for forwarding authentication messages to a device having full IEEE Standard 802.1X Port Access Entity (PAE) functionality. The relay function directs authentication information to the PAE device to perform the authentication function pursuant to that standard. The relay function eliminates the need for the network entry device to operate as a PAE device. The relay function may forward the authentication messages in a form compatible with IEEE Standard 802.1D or IEEE Standard 802.1Q.

88. 发明专利

CA2541156A1 SYSTEM AND METHOD FOR DYNAMIC DISTRIBUTION OF INTRUSION SIGNATURES 未知
公开(公告)号：CA2541156A1
公开(公告)日：2005-04-21
申请号：CA2541156
申请日：2004-10-01
申请人： ENTERASYS NETWORKS INC
发明人： ROESE JOHN J , GRAHAM RICHARD W
IPC分类号： G06F11/30 , G06F20060101 , G06F12/14 , G06F12/16 , G06F15/18 , G06F21/00 , G08B23/00 , H04L9/32 , H04L29/06
摘要： The intrusion detection function monitors for and reports detected intrusion signatures. The dynamic intrusion signatures function determines whether reported intrusion signatures exist in a library of signatures associated with a particular intrusion detection function. If the reported signature does not exist in the library, the library is updated. Detected intrusion signatures are reported to similarly enabled devices for library analysis and updating, if necessary. The related method includes the steps of monitoring for intrusion signatures or other triggering events, analyzing the events and updating IDS signature libraries as necessary.

89. 发明专利

GB2389756B Flow control system to reduce memory buffer requirements and to establish priority servicing between networks 未知
公开(公告)号：GB2389756B
公开(公告)日：2004-09-15
申请号：GB0322162
申请日：2002-04-26
申请人： ENTERASYS NETWORKS INC
发明人： CARRAFIELLO MICHAEL W , HARAMES JOHN C , MCGRATH ROGER W
IPC分类号： G01R31/08 , G06F15/16 , H04L12/46 , H04L12/56 , H04L25/05
摘要： The invention is a system and method to allow precise control of the transmit packet rate between two different networks and to optionally introduce a priority servicing scheme across several related output ports of a switch engine. The invention employs flow control circuitry to regulate data packet flow across a local interface within a single device by asserting back-pressure. Specifically, flow control is used to prevent a switch port from transmitting a data packet until a subsequent processing stage is ready to accept a packet via that port. The downstream node only permits transmission of packets from the switch when its buffer is available. An interface block effectively multiplexes together multiple switch ports by maintaining constant back-pressure on all of the ports and then releasing the back-pressure, one port at a time, to see if a port has a packet to transmit. This use of back-pressure to control the flow of data packets also allows a priority servicing scheme to be implemented by controlling the sequence of releasing back-pressure to the ports and also the number of packets allowed out of a port when it is allowed to transmit.

90. 发明专利

DE69917601D1 未知
公开(公告)号：DE69917601D1
公开(公告)日：2004-07-01
申请号：DE69917601
申请日：1999-01-13
申请人： ENTERASYS NETWORKS INC
发明人： RIJHSINGHANI G , KONING PAUL
IPC分类号： H04B1/74 , H04L12/44 , H04L12/46 , H04L69/40 , H04L29/14
摘要： A switch is provided for use in a communications system for transmitting traffic from a first user to a second user. The first and the second users are interconnected by a primary communications path and a redundant communications path. The switch includes a first port configured to receive hello communications indicative of a proper operation of the primary communications path and a second port for receiving data communications. A switch control monitors the receipt of the hello communications, directs the forwarding of received data communications up to a threshold capacity and, if the received data communications exceed the threshold capacity, drops at least a portion of the received data communications such that forwarded data communications are below the threshold capacity.

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