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51. 发明专利

JP2006067613A Address-notifying method 有权
标题翻译：地址通知方法
公开(公告)号：JP2006067613A
公开(公告)日：2006-03-09
申请号：JP2005277056
申请日：2005-09-26
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TSUCHIYA KAZUAKI , IKEDA NAOYA , HAMAMOTO SHINICHI , WATABE KEN , YASUE RIICHI
IPC分类号： H04L12/28 , H04L12/66 , H04L12/70 , H04L29/06
摘要： PROBLEM TO BE SOLVED: To communicate with an IPv4 terminal, even if an IPv4 address has not been previously allocated to an IPv6 terminal by fixing, and further communicate, without assigning to what is used as a communication protocol mutually by a counterpart, by designating the counterpart with a domain name. SOLUTION: The address-notifying method comprises IP for transmitting and receiving means 10 for transmitting and receiving an IPv4 packet and an IPv6 packet an IP header conversion means 11 for making mutual conversion between the IPv4 packet and the IPv6 packet by an IP header conversion; a DNS proxy means 13 for accepting a domain information acquisition request, transmitted from an IPv4 terminal or an IPv6 terminal and performing the processing as a proxy; IPv4 address acquiring means 14 for acquiring the IPv4 address from a DHCP server; and an IP address conversion information holding means 15 for holding the IPv6 address of the IPv6 terminal and the IPv4 address, acquired by the IPv4 address acquiring means 14 associated between them. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了与IPv4终端进行通信，即使IPv4地址以前没有被分配给IPv6终端，通过固定和进一步通信，而不分配给对方的相互通信协议，通过指定具有域名的对方。解决方案：地址通知方法包括用于发送和接收IPv4分组的发送和接收装置10和IPv6分组的IP报头，用于通过IP进行IPv4分组和IPv6分组之间的相互转换的IP报头转换装置11 标题转换; DNS代理装置13，用于接收从IPv4终端或IPv6终端发送的域信息获取请求，并执行处理作为代理; IPv4地址获取装置14，用于从DHCP服务器获取IPv4地址; 以及IP地址转换信息保持装置15，用于保存IPv6终端的IPv6地址和由它们之间相关联的IPv4地址获取装置14获取的IPv4地址。版权所有（C）2006，JPO＆NCIPI

52. 发明专利

JP2003229884A METHOD FOR CONVERTING PACKET 审中-公开
公开(公告)号：JP2003229884A
公开(公告)日：2003-08-15
申请号：JP2003005233
申请日：2003-01-14
申请人： HITACHI LTD
发明人： HAMAMOTO SHINICHI , WATABE KEN , TSUCHIYA KAZUAKI , IKEDA NAOYA
IPC分类号： H04L12/70 , H04L12/46 , H04L12/66 , H04L12/56
摘要： PROBLEM TO BE SOLVED: To connect two networks having different IP (Internet protocol) address providing systems due to a difference of versions or the like without exhausting the IP addresses of one network. SOLUTION: A translator 55 is provided with a packet conversion means for allocating any one of IPv4 addresses prepared in advance to an IPv6 address stored in a transmitting source storing area of an IPv6 packet and storing the allocated address into a transmitting source storing area of the IPv4 packet when transferring a packet from an IPv6 network 52 to an IPv4 network 54 and allocating the IPv6 address to the IPv4 address stored in a destination storing area of the IPv4 packet and storing the address into a destination storing area of the IPv6 packet when transferring the packet from the network 54 to the network 52. COPYRIGHT: (C)2003,JPO

53. 发明专利

JP2002281072A INTERNET WORK DEVICE AND INTERNET WORK METHOD 失效
公开(公告)号：JP2002281072A
公开(公告)日：2002-09-27
申请号：JP2001077585
申请日：2001-03-19
申请人： HITACHI LTD
发明人： YOSHINO SHIGEKI , HIGUCHI HIDEMITSU , IKEDA NAOYA , SAINOMOTO YOSHITAKA , INAGAKI YUKIHIDE
IPC分类号： H04L12/701 , H04L12/46 , H04L12/775 , H04L12/947 , H04L12/56
摘要： PROBLEM TO BE SOLVED: To perform scalable function extension by performing added function processing and routing processing at a high speed by a function extending module by mounting at least one function extending module. SOLUTION: A function performing module 62 for performing an extending function is connected to a high speed routing module 32 capable of performing routing processing by hardware so that a function extending module 6 can be constituted. Even when a packet having new address information is generated according to the working of packet data by the function performing module 62, the high speed performance of the routing processing for selecting the new routing destination of the packet, and for transferring the packet can be maintained by the connected routing module 32, and the function extension by the scalable function extending module can be performed by connecting the multiple function performing modules 62. Also, the multiple function performing modules 62 whose functions are different are mounted so that the multiple functions can be integrated into one Internet work device.

54. 发明专利

JP2002111737A PACKET CONVERSION METHOD 审中-公开
公开(公告)号：JP2002111737A
公开(公告)日：2002-04-12
申请号：JP2001241512
申请日：2001-08-09
申请人： HITACHI LTD
发明人： TSUCHIYA KAZUAKI , IKEDA NAOYA , HAMAMOTO SHINICHI , WATABE KEN , YASUE RIICHI
IPC分类号： H04L12/70 , H04L12/66 , H04L29/06 , H04L12/56
摘要： PROBLEM TO BE SOLVED: To communicate with an IPv4 terminal even if an IPv4 address is not previously allocated to an IPv6 terminal by fixing, and further communicate without paying attention to what is used as a communication protocol mutually by a counterpart by designating the counterpart in a domain name. SOLUTION: A packet conversion method comprises: IP transmission and reception means 10 for transmitting and receiving an IPv4 packet and an IPv6 packet; IP header conversion means 11 for making mutual conversion between the IPv4 packet and IPv6 packet by an IP header conversion; DNS alternate means 13 for accepting a domain information acquisition request transmitted from an IPv4 terminal or IPv6 terminal to alternate the processing; IPv4 address acquisition means 14 for acquiring the IPv4 address from a DHCP server; and IP address conversion information holding means 15 for correspondingly holding an IPv6 address of the IPv6 terminal and the IPv4 address acquired by the IPv4 address acquisition means 14.

55. 发明专利

JP2000253053A NETWORK SYSTEM 失效
公开(公告)号：JP2000253053A
公开(公告)日：2000-09-14
申请号：JP4759699
申请日：1999-02-25
申请人： HITACHI LTD
发明人： TAKADA OSAMU , IKEDA NAOYA , MIMURA ITARU , KUROSAKI YOSHIYUKI , NISHIKADO TAKASHI , MIYAKE SHIGERU
IPC分类号： H04L12/24 , H04L12/70 , H04L12/725 , H04L12/761 , H04L29/06 , H04L12/56
摘要： PROBLEM TO BE SOLVED: To quickly provide a new service by connecting plural network domains and providing an inter-organization arbitrating means for setting a communication quality assurance path extending over plural management organizations. SOLUTION: A reservation system resources management function 531 and an immediate system resources management function 532 are linked with a system operation management function and an inter-organization arbitration function to convert a network resource into resources instruction information to a communication node. A resources instruction transmission function 534 decides a communication node to which a resources instruction information should be transmitted and transmits it to one or more corresponding communication node control functions. Since resources report information is transmitted from each communication node control function, a resources report receiving function 533 receives it, subsequently decides the class of the resources report information and notifies a system operation management function and the functions 531 and 532 of it. An inter-organization arbitration function 535 negotiates with another inter-organization arbitration function 535 belonging to another management domain function and acquires needed network resources.

56. 发明专利

JPH10290254A INFORMATION PROCESSOR 失效
公开(公告)号：JPH10290254A
公开(公告)日：1998-10-27
申请号：JP9692797
申请日：1997-04-15
申请人： HITACHI LTD
发明人： ENOMOTO HIROMICHI , SHIRAISHI TSUTOMU , IKEDA NAOYA
IPC分类号： H04L29/04 , H04L12/28 , H04L12/46
摘要： PROBLEM TO BE SOLVED: To efficiently repeat IP frames of different address systems by outputting an internal address, a comparison result, and the kind of a header to a microprocessor, etc. SOLUTION: A control circuit 10 processes a read request in an internal register. A header position control circuit 12 controls the holding and arithmetic time of 16 bytes of the transmission-destination address of a transferred IP header. A control circuit 13 processes a write request in an internal register. A flip-flop 16 temporarily holds the outputs of an arithmetic circuit 15 and a flip-flop 11 with an indication for control over the arithmetic time of a header position control circuit 12. A comparing circuit 17 compares the output of the flip-flop 11 with the output of the flip-flop 14. Then a bus driver circuit 19 outputs the result of this control circuit to the microprocessor according to the indication of a read request control circuit 10.

57. 发明专利

JPH1056474A MULTILAYER SWITCH 失效
公开(公告)号：JPH1056474A
公开(公告)日：1998-02-24
申请号：JP20945996
申请日：1996-08-08
申请人： HITACHI LTD
发明人： IKEDA NAOYA
IPC分类号： H04L12/28 , H04L12/46 , H04L12/66
摘要： PROBLEM TO BE SOLVED: To repeatedly process received frame data at high speed by storing the address and repeatedly processed result of frame data to which repeating processing is performed before and executing the repeating processing through the processing means of the repeating processing result coincident with the address of received frame data. SOLUTION: A main processor 110 of a multilayer switch 100 stores the frame data received from input/output ports 112-115 into a transmission/reception frame memory 116 and retrieves the previous repeated processing result stored in a repeated processing result storage part 123 coincident with the address of received frame data through a high-speed retrieval part 121. Next, a repeated processing discrimination part 122 judges the existence of the coincident processing result. When such a result does not exist, ordinary processing is performed but when such a result exists, it is check whether router repeated processing or bridge repeated processing is performed to the repeated processing result before and the previous processing method is started immediately. Thus, the repeated processing of received frame data can be performed at high speed.

58. 发明专利

JPH09275418A NETWORK CONNECTOR 失效
公开(公告)号：JPH09275418A
公开(公告)日：1997-10-21
申请号：JP8354696
申请日：1996-04-05
申请人： HITACHI LTD
发明人： OURA TETSUO , IKEDA NAOYA
IPC分类号： H04L12/44 , H04L12/46 , H04L12/70 , H04L12/56 , H04L12/28
摘要： PROBLEM TO BE SOLVED: To provide an address solution control system for a switch in a network, where plural subnets exist in one physical segment, by providing an address solution control part and an ARP packet detection part inside a destination port discrimination part at the switch. SOLUTION: A switch 20 is provided with an address solution control part 47 and an ARP packet detection part 382 inside a destination port discrimination part 38. The ARP packet detection part 382 confirms a transferred packet and when it is judged as an ARP packet, all the bits of the destination port identification part are cleared. Next, the ARP packet is transferred from a destination port distribution part 39 to the address resolution control part 47 and a packet generated by the address solution control part 47 is transferred to the destination port distribution part 39 respectively. Further, an ARP response packet is transferred from a managing part 36 to the address solution control part 47.

59. 发明专利

JPH0818599A INTERNETWORK EQUIPMENT 失效
公开(公告)号：JPH0818599A
公开(公告)日：1996-01-19
申请号：JP14437894
申请日：1994-06-27
申请人： HITACHI LTD
发明人： IKEDA NAOYA , SAKO YOSHITO
IPC分类号： H04L12/46 , H04L12/28
摘要： PURPOSE:To reduce a quantity of a memory used for a routing table of an internetwork equipment by compressing information and storing compressed information depending on the frequency of use of a routing table of each routing processor. CONSTITUTION:The equipment is provided with a relay controller 10 consisting of a relay control table 8 used to decide a relay destination network in a routing processor and of an entry retrieval device 9. The equipment is provided with an entry frequency of use discrimination device 13 to count the frequency of use of the relay controller 10 and minimized information of a network address discriminated not frequently in use by the device 13 is stored in a routing information compressor 11 in other form. When the routing of the network address of the other form is required, routing information is inquired of the routing manager 2 and the relay is made depending on the result and the routing information is generated by an entry generator 12 in a first entry form.

60. 发明专利

JPH07143156A MEMORY AND ITS APPLICATION DEVICE 失效
公开(公告)号：JPH07143156A
公开(公告)日：1995-06-02
申请号：JP28943193
申请日：1993-11-18
申请人： HITACHI LTD
发明人： IKEDA NAOYA , WATABE KEN , SAWADA SUNAO , ENOMOTO HIROMICHI , SAKO YOSHITO
IPC分类号： G11C15/04 , G06F13/00 , H04L12/28 , H04L12/46 , H04L12/741 , H04L12/931
摘要： PURPOSE:To realize filtering function at a high speed by using only data corresponding to bits designated to be valid by a database mask register for a discrimination object. CONSTITUTION:M-sets of data discrimination circuit cells 2 are provided in a CAM (associative memory) 1. Each data discrimination circuit 2 is provided with a database register 21, a database mask register 22, a database register comparison means discriminating the content of data stored in input data register and the database register 21 as to whether or not the content is coincident for each bit and providing the output of a discrimination result representing full bit coincidence, and a comparator circuit 23 with bit mask function generating a control signal used to make only data corresponding to bits designated to be valid by the database mask register 22 among the data stored in the database register 21 to be a discrimination object by the database register comparison means.

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