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1. 发明专利

JP2001186140A LAYER TWO SWITCHING METHOD AND ATM SWITCH UTILIZING METHOD THEREFOR 失效
公开(公告)号：JP2001186140A
公开(公告)日：2001-07-06
申请号：JP36846899
申请日：1999-12-24
申请人： FUJITSU LTD
发明人： MORITOMO HARUO , ASANO KATSUTO
IPC分类号： H04L12/28
摘要： PROBLEM TO BE SOLVED: To provide a layer two switching method, where a LAN emulation environment is generated and a LAN emulation client function is assigned to each LAN interface, to attain high-speed layer 2 communication and an ATM switch utilizing the method. SOLUTION: The ATM switch is provided with a plurality of LAN adaptor sections 40-1 to 40-2 that receive frames, a control section 20 that automatically builds up a LAN emulation environment and sets the LAN emulation client function by each of the LAN adaptor sections 40-1 to 40-2 and a cell switching section 30, that assembles a received frame into cells and routes the cells according to the LAN emulation client function, to solve this task.

2. 发明专利

JPH10262046A UBR CONNECTION ROUTE DECISION SYSTEM 失效
公开(公告)号：JPH10262046A
公开(公告)日：1998-09-29
申请号：JP6282397
申请日：1997-03-17
申请人： FUJITSU LTD
发明人： ASANO KATSUTO
IPC分类号： H04J3/22 , H04L12/28 , H04Q3/00
摘要： PROBLEM TO BE SOLVED: To scatter the load in a network and also to attain the effective use of the resources by deciding the routes of the non-prescribed bit rate connections, based on the number of these connections which are controlled for each resource within the switchboards constructing a cell network. SOLUTION: ATM(asynchronous transfer mode) switchboards A and B, configuring an ATM network decide the connection routes to each other, based on a signaling protocol. The signaling protocol specifications set between a subscriber and the network are directly used as the signaling protocol between the switchboards A and B, and each of both switchboards has a table where the address prefixes are registered. Then the number of pieces of UBR connections which are already set at an output port of each switchboard is controlled for each output port (by each route), and the routes of UBR connections are decided based on the number of these connections.

3. 发明专利

JP2005277498A Communication system 审中-公开
标题翻译：通讯系统
公开(公告)号：JP2005277498A
公开(公告)日：2005-10-06
申请号：JP2004083982
申请日：2004-03-23
申请人： Fujitsu Ltd , 富士通株式会社
发明人： YOSHIMURA NAOMASA , ABE KENICHI , ASANO KATSUTO , SHIRAI TAKAMITSU
IPC分类号： H04L12/46 , H04L12/66 , H04L12/70 , H04L12/701 , H04L12/749 , H04L29/06 , H04L12/56
CPC分类号： H04L45/00 , H04L12/4633 , H04L12/4641 , H04L45/54 , H04L63/029 , H04L63/164
摘要： PROBLEM TO BE SOLVED: To provide a communication system for enhancing operability by carrying out high quality routing processing. SOLUTION: An IPsec tunnel control section 11 establishes an IPsec tunnel on the Internet 4 by using an ISAKMP default route between its own apparatus 10 and a remote router R1. When a local IP address being a destination address is statistically registered and a second router on an IP default route to addresses other than the registered local IP address is statistically registered to a routing table T1 and the IPsec tunnel is established, a routing registration processing section 12 recognizes a global IP address of the remote router R1 and dynamically registers the global IP address corresponding to the local IP address. A packet transfer section 13 transfers packets on the basis of the routing table T1. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供通过执行高质量路由处理来提高可操作性的通信系统。解决方案：IPsec隧道控制部分11通过在其自己的设备10和远程路由器R1之间使用ISAKMP默认路由在因特网4上建立IPsec隧道。当将作为目的地地址的本地IP地址统一登记时，将IP地址以外的地址的第二路由器统一登记到路由表T1并建立IPsec隧道时，路由登记处理部 12识别远程路由器R1的全局IP地址，并动态注册与本地IP地址相对应的全局IP地址。分组传送部分13基于路由表T1传送分组。版权所有（C）2006，JPO＆NCIPI

4. 发明专利

JP2000307593A DEVICE AND METHOD FOR MANAGING MPOA CACHE 失效
公开(公告)号：JP2000307593A
公开(公告)日：2000-11-02
申请号：JP11081399
申请日：1999-04-19
申请人： FUJITSU LTD
发明人： ASANO KATSUTO , MORITOMO HARUO
IPC分类号： G06F15/16 , H04L12/24 , H04L12/26 , H04L12/28 , H04L12/70 , H04L12/725 , H04L12/751 , H04L12/763
摘要： PROBLEM TO BE SOLVED: To execute efficient communication at high speed by transmitting an MPOA address solution request message to an ingress MPOA server and updating the cache memory content of a cache management part with the response message content when the detection of a data flow exceeding a prescribed threshold is informed from a flow monitoring part. SOLUTION: A flow monitoring part 22 monitors a data flow transmitted to an ingress MPOA server within prescribed monitoring time before the time out of a timer 26 after the setting of a short cut. An MPOA message processing part 23 transmits an MPOA address solution request message to the ingress MPOA server when the detection of the data flow exceeding the prescribed threshold is informed from the flow monitoring part 23. Thus, a cache management part 21 managing an ingress cache by a memory 25 and a timer 26 updates the content of the memory 25 with the response message content. Thus, the efficient communication of high speed, which is intrinsic to the MPOA, is executed.

5. 发明专利

JPH11275077A Atm network system and clock supply route alteration method therefor 失效
标题翻译： ATM网络系统及其时钟路由选择方法
公开(公告)号：JPH11275077A
公开(公告)日：1999-10-08
申请号：JP7178398
申请日：1998-03-20
申请人： Fujitsu Ltd , 富士通株式会社
发明人： ASANO KATSUTO
IPC分类号： H04L12/56 , H04L12/28
CPC分类号： H04L12/5601 , H04L2012/562 , H04L2012/5627 , H04L2012/5671 , H04L2012/5674
摘要： PROBLEM TO BE SOLVED: To provide an asynchronous transfer mode(ATM) network system by which the occurrence of an exchange to be disconnected from a clock synchronization network is prevented, when faults occur in a clock supply route. SOLUTION: This ATM network system has a clock synchronization source 11 and plural nodes 12-17. Plural clock supply routes A-F are set in the system to allow each of the nodes 12-17 to receive a clock from the clock synchronization source 11. When each of the nodes 12-17 detects a fault of a route used at present, each of the nodes 12-17 gives an operation maintenance management(OAM) cell, including an alarm indication signal(AIS), to other nodes receiving clock supply through the route by means of a connection and changes the route in use to other route. Furthermore, the nodes receiving the AIS changes the active route into other route, based on the AIS.
摘要翻译：要解决的问题：提供一种异步传输模式（ATM）网络系统，通过该异步传输模式（ATM）网络系统，当时钟供应路由中出现故障时，防止与时钟同步网络断开的交换的发生。解决方案：该ATM网络系统具有时钟同步源11和多个节点12-17。在系统中设置多个时钟供给路径AF，以允许每个节点12-17从时钟同步源11接收时钟。当每个节点12-17检测到目前使用的路由的故障时，节点12-17通过连接向通过路由接收时钟供给的其他节点给出包括报警指示信号（AIS）的操作维护管理（OAM）小区，并将使用中的路由改变为其他路由。此外，基于AIS，接收AIS的节点将活动路由改变为其他路由。

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