Multiprocessor bridge having storage for spanning tree operation mode information indicating whether each port of the bridge is operable under spanning tree protocol

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO

5761435

SERIAL NO

08401898

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Abstract

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A multiprocessor bridge construction allows ports that are operable under a spanning tree protocol to coexist with ports that are inoperable under the spanning tree protocol, thus making it possible to improve the frame-repeating capability of the bridge, to equip the bridge with a large number of ports, and to divide the spanning tree topology into a plurality of portions to be managed.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
HITACHI COMPUTER ENGINEERING CO., LTD.TOKYO10
HITACHI, LTD.TOKYO14221

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fukuda, Masashi Hadano, JP 22 125
Matsuo, Hideyuki Taga-gun, JP 10 112
Morimoto, Shigeki Atugi, JP 23 593
Murakami, Toshihiko Yokohama, JP 50 499
Sakoda, Hirpyuki Hadano, JP 1 81
Yoneno, Takunori Hadano, JP 2 92

Cited Art Landscape

Patent Info (Count) # Cites Year
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (2)
* 5280480 Source routing transparent bridge 207 1991
* 5448565 Multiport LAN bridge 104 1992
 
ERICSSON AB (1)
* 5515376 Communication apparatus and methods 245 1993
 
TELCORDIA TECHNOLOGIES, INC. (1)
* 4706080 Interconnection of broadcast networks 139 1985
 
ENTERASYS NETWORKS, INC. (3)
* 5018137 Transparent load sharing for parallel networks 101 1990
* 5500860 Router using multiple hop redirect messages to enable bridge like data forwarding 142 1991
* 5195181 Message processing system having separate message receiving and transmitting processors with message processing being distributed between the separate processors 100 1992
 
ROCKSTAR CONSORTIUM US LP (1)
* 5490252 System having central processor for transmitting generic packets to another processor to be altered and transmitting altered packets back to central processor for routing 454 1992
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
Fortinet, Inc. (5)
8565115 Adaptive load balancing 7 2012
8660007 Performing rate limiting within a network 3 2013
8873424 Adaptive load balancing 1 2013
8917604 Performing rate limiting within a network 1 2014
9276861 Selecting among multiple concurrently active paths through a network 0 2014
 
Other [Check patent profile for assignment information] (2)
* 2004/0105,455 Automatic edge port and one way connectivity detection with rapid reconfiguration for shared media in spanning tree configured bridged Local Area Networks 9 2003
* 2005/0259,597 Multiple instance spanning tree protocol 108 2005
 
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (1)
* 2008/0067,128 FLUID SEPARATION DEVICE 0 2007
 
HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP (9)
* 5878232 Dynamic reconfiguration of network device's virtual LANs using the root identifiers and root ports determined by a spanning tree procedure 168 1996
* 6195351 Logical switch set 54 1998
6330229 Spanning tree with rapid forwarding database updates 84 1998
6611502 Spanning tree with rapid propagation of topology changes 32 1999
6771610 Spanning tree with protocol for bypassing port state transition timers 34 1999
* 2003/0016,624 Path recovery on failure in load balancing switch protocols 31 2002
* 6697339 High availability spanning tree with rapid reconfiguration with alternate port selection 54 2003
6934263 Spanning tree with protocol for bypassing port state transition timers 11 2004
* 2010/0115,415 GRAPHIC FOR NETWORK SWITCHES 15 2008
 
CISCO TECHNOLOGY, INC. (27)
* 6188694 Shared spanning tree protocol 182 1997
6628624 Value-added features for the spanning tree protocol 98 1998
6535491 Method and apparatus for rapidly reconfiguring computer networks using a spanning tree algorithm 84 1999
6388995 Method and apparatus for rapidly reconfiguring computers networks executing the spanning tree algorithm 99 1999
6678241 Fast convergence with topology switching 85 1999
6898189 Restartable spanning tree for high availability network systems 53 2000
* 6219739 Spanning tree with fast link-failure convergence 73 2000
6937576 Multiple instance spanning tree protocol 94 2000
7061858 High availability architecture for network devices 78 2000
6813250 Shared spanning tree protocol 63 2000
* 7013347 Distance vector extension to the address resolution protocol 5 2001
7177946 Optimal sync for rapid spanning tree protocol 32 2001
6976088 Method and apparatus for rapidly reconfiguring bridged networks using a spanning tree algorithm 28 2002
7342877 Method and system for providing a loop-free ring topology 8 2003
7602706 Inter-ring protection for shared packet rings 8 2003
7606177 Value-added features for the spanning tree protocol 7 2003
7428237 Fast convergence with topology switching 25 2004
* 7848264 Method and apparatus for rapidly reconfiguring computer networks 14 2005
7599284 Restartable spanning tree for high availability network systems 21 2005
8165043 Multiple instance spanning tree protocol 2 2005
7995499 Minimizing spanning-tree protocol event processing and flooding in distribution networks 2 2006
* 2008/0123,561 Minimizing Spanning-Tree Protocol Event Processing and Flooding in Distribution Networks 3 2006
7558878 Optimal sync for rapid spanning tree protocol 3 2007
* 2007/0124,498 Optimal SYNC for rapid spanning tree protocol 8 2007
8077709 Redundancy at a virtual provider edge node that faces a tunneling protocol core network for virtual private local area network (LAN) service (VPLS) 8 2007
8650285 Prevention of looping and duplicate frame delivery in a network environment 0 2011
8650286 Prevention of looping and duplicate frame delivery in a network environment 2 2011
 
CONEXANT SYSTEMS UK LIMITED (1)
* 6111858 Proxy-controlled ATM subnetwork 182 1997
 
SONY ELECTRONICS INC. (14)
* 5940597 Method and apparatus for periodically updating entries in a content addressable memory 42 1997
* 5884040 Per-packet jamming in a multi-port bridge for a local area network 79 1997
* 6012099 Method and integrated circuit for high-bandwidth network server interfacing to a local area network 19 1997
6446173 Memory controller in a multi-port bridge for a local area network 26 1998
6256313 Triplet architecture in a multi-port bridge for a local area network 10 1998
6301256 Selection technique for preventing a source port from becoming a destination port in a multi-port bridge for a local area network 15 1998
* 6157951 Dual priority chains for data-communication ports in a multi-port bridge for a local area network 18 1998
6308218 Address look-up mechanism in a multi-port bridge for a local area network 58 1998
6816490 Statistical learning technique in a multi-port bridge for a local area network 16 1999
6751225 Port within a multi-port bridge including a buffer for storing routing information for data packets received in the port 17 1999
6744728 Data pipeline timing optimization technique in a multi-port bridge for a local area network 10 1999
6738384 Technique for optimizing cut-through for broadcast and multi-cast packets in a multi-port bridge for a local area network 14 1999
6617879 Transparently partitioned communication bus for multi-port bridge for a local area network 60 1999
6363067 Staged partitioned communication bus for a multi-port bridge for a local area network 21 1999
 
FUJITSU LIMITED (1)
* 6813238 Cable modem and cable modem system 3 1999
 
SUN MICROSYSTEMS, INC. (2)
6094435 System and method for a quality of service in a multi-layer network element 181 1997
6061362 Interface for a highly integrated ethernet network element 31 1999
 
ORACLE AMERICA, INC. (12)
6246680 Highly integrated multi-layer switch element architecture 90 1997
* 6128666 Distributed VLAN mechanism for packet field replacement in a multi-layered switched network element using a control field/signal for indicating modification of a packet with a database search engine 180 1997
6088356 System and method for a multi-layer network element 214 1997
6081512 Spanning tree support in a high performance network device 144 1997
6081522 System and method for a multi-layer network element 135 1997
* 6052738 Method and apparatus in a packet routing switch for controlling access at different data rates to a shared memory 33 1997
6049528 Trunking ethernet-compatible networks 221 1997
* 6044087 Interface for a highly integrated ethernet network element 25 1997
6044418 Method and apparatus for dynamically resizing queues utilizing programmable partition pointers 34 1997
6016310 Trunking support in a high performance network device 127 1997
* 5938736 Search engine architecture for a high performance multi-layer switch element 201 1997
* 7339900 Method and apparatus for preventing spanning tree loops during traffic overload conditions 12 2003
 
NEC CORPORATION (6)
* 6003137 Virtual group information managing method in bridge for network connection 25 1997
* 7280488 Communication device, network system using same, and method of constructing spanning tree 3 2002
* 7136390 Communication apparatus, communication system, and communication control method 1 2002
* 2002/0181,413 Communication apparatus, communication system, and communication control method 4 2002
* 7532588 Network system, spanning tree configuration method and configuration program, and spanning tree configuration node 4 2003
* 2004/0160,904 Network system, spanning tree configuration method and configuration program, and spanning tree configuration node 19 2003
 
INTEL CORPORATION (1)
6628661 Spanning tree recovery in computer networks 29 1999
 
FOUNDRY NETWORKS, LLC (10)
* 7564858 System and method for enabling a remote instance of a loop avoidance protocol 15 2003
7558205 System and method for detecting and isolating a remote loop 17 2003
7822049 System and method for enabling a remote instance of a loop avoidance protocol 7 2005
7944816 System and method for detecting and isolating a remote loop 1 2009
* 2009/0225,668 System and Method For Detecting And Isolating A Remote Loop 1 2009
7856490 System and method for multiple spanning tree protocol domains in a virtual local area network 1 2009
8345699 System and method for enabling a remote instance of a loop avoidance protocol 0 2010
* 2011/0064,001 SYSTEM AND METHOD FOR ENABLING A REMOTE INSTANCE OF A LOOP AVOIDANCE PROTOCOL 1 2010
8817666 System and method for multiple spanning tree protocol domains in a virtual local area network 0 2010
8446819 System and method for detecting and isolating a remote loop 0 2011
 
OLLCOM A/S (2)
6940825 Spanning tree recovery in machine networks 6 2003
* 2004/0062,209 Spanning tree recovery in machine networks 11 2003
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1)
* 2003/0149,757 Identification code management system for home network 4 2003
* Cited By Examiner