WO2004006518A1 - 中継機器、中継方法、プログラム、及び通信システム - Google Patents
中継機器、中継方法、プログラム、及び通信システム Download PDFInfo
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- WO2004006518A1 WO2004006518A1 PCT/JP2002/006871 JP0206871W WO2004006518A1 WO 2004006518 A1 WO2004006518 A1 WO 2004006518A1 JP 0206871 W JP0206871 W JP 0206871W WO 2004006518 A1 WO2004006518 A1 WO 2004006518A1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/54—Store-and-forward switching systems
- H04L12/56—Packet switching systems
- H04L12/5691—Access to open networks; Ingress point selection, e.g. ISP selection
- H04L12/5692—Selection among different networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/80—Ingress point selection by the source endpoint, e.g. selection of ISP or POP
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/45—Network directories; Name-to-address mapping
- H04L61/4505—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols
- H04L61/4511—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols using domain name system [DNS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/2866—Architectures; Arrangements
- H04L67/30—Profiles
- H04L67/303—Terminal profiles
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
- H04L69/168—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP] specially adapted for link layer protocols, e.g. asynchronous transfer mode [ATM], synchronous optical network [SONET] or point-to-point protocol [PPP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/40—Network security protocols
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/30—Definitions, standards or architectural aspects of layered protocol stacks
- H04L69/32—Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
- H04L69/322—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions
- H04L69/329—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions in the application layer [OSI layer 7]
Definitions
- Relay device relay method, program, and communication
- the present invention relates to a relay device, a relay method, a program, and a communication system.
- the present invention relates to a relay device that connects each of a plurality of ISPs and a user terminal.
- a user terminal connects to an ISP using a PPPoE (Polntto Poit Protocolover Ethernet) connection by a router or the like, and connects to the Internet via an ISP (Internet Service Provider).
- PPPoE Policy Packetto Poit Protocolover Ethernet
- ISP Internet Service Provider
- routers have been developed that establish a plurality of PPPoE sessions for each of a plurality of ISPs using a single physical line.
- Such a router can take advantage of the established PPPoE sessions without the user having to be aware of the multiple PPPoE sessions in order to take full advantage of the established multiple PPPoE sessions. Need to switch dynamically.
- the present invention provides a relay device, a relay method, It aims to provide a program, and a communication system. This object is achieved by a combination of features described in the independent claims.
- the dependent claims define further advantageous embodiments of the present invention. Disclosure of the invention
- a relay device for connecting a plurality of ISPs to a user terminal, the receiving unit receiving a bucket from the user terminal, A destination obtaining unit that obtains a destination IP address from a packet received by the receiving unit, a domain name obtaining unit that obtains a domain name corresponding to the destination IP address obtained by the destination obtaining unit from a DNS server, and an ISP and a domain name. And a transmitting unit that transmits a packet to an ISP that is stored in the destination storage unit in association with the domain name acquired by the domain name acquisition unit.
- a relay device for connecting a plurality of ISPs to a user terminal, wherein the user terminal accesses the communication terminal and the plurality of ISPs via one of the plurality of ISPs.
- a route information acquisition unit that acquires route information between the ISP and a destination that stores one of a plurality of ISPs and the terminal identification information of the communication terminal in association with each other based on the route information acquired by the route information acquisition unit.
- a storage unit a receiving unit that receives a packet from a user terminal, a terminal identification information obtaining unit that obtains terminal identification information of a destination communication terminal from a packet received by the receiving unit, and a terminal identification obtaining unit that obtains the terminal identification information.
- a transmission unit is provided that transmits packets to the ISP stored in the destination storage unit in association with the terminal identification information.
- the route information obtaining unit obtains the route information between the communication terminal identified by the domain name and each of the plurality of ISPs, and the destination storage unit obtains the route information based on the route information obtained by the route information obtaining unit.
- the terminal information acquisition unit acquires the destination IP address from the packet received by the receiving unit, and stores the destination IP address from the packet received by the receiving unit, and stores the domain name corresponding to the acquired destination IP address. From the DNS server
- the transmission unit may acquire the packet and transmit the bucket to the ISP stored in the destination storage unit in association with the domain name acquired by the terminal information acquisition unit.
- the route information acquisition unit acquires, as the route information, the number of hops when a packet is transmitted to the communication terminal identified by the domain name via each of the plurality of ISPs, and the destination storage unit includes the route information acquisition unit. If the number of hops obtained by is smaller than other ISPs, the ISP may be stored in association with the domain name.
- the route information acquisition unit acquires, as the route information, a response time when a packet is transmitted to the communication terminal identified by the domain name via each of the plurality of ISPs, and the destination storage unit includes the route information acquisition unit. If the response time obtained by the ISP is shorter than other ISPs, you may store the ISP in association with the domain name.
- the transmitting unit transmits the bucket to the ISP stored in the destination storage unit in association with the domain name obtained by the terminal information obtaining unit and transmits the bucket to the same ISP until a predetermined time elapses. May be transmitted. It further includes a history information storage unit that stores the route information acquired by the route information acquisition unit in association with the time, and the destination storage unit includes a plurality of destination storage units for each time zone based on the route information stored in the history information storage unit. One of the ISPs may be stored in association with the domain name.
- the apparatus further includes an access count storage unit that stores the number of accesses to the communication terminal identified by the domain name in association with the domain name. Route information between a communication terminal identified by a domain name more than a predetermined number of times and each of a plurality of ISPs may be obtained.
- a method of relaying a relay device for connecting a plurality of ISPs to a user terminal comprising: a receiving step of receiving a packet from the user terminal; and a destination from a bucket received in the receiving step.
- a relay device relay method for connecting a plurality of ISPs to a user terminal, the method comprising: The route information acquisition stage that acquires route information between each of the ISPs, and any one of the multiple ISPs is associated with the terminal identification information of the communication terminal based on the route information acquired in the route information acquisition stage Receiving a bucket from a user terminal, receiving a bucket from a user terminal, obtaining terminal identification information of a destination communication terminal from a packet received in the receiving step, and obtaining terminal identification information. Transmitting a packet to the ISP stored in the destination storage unit in association with the terminal identification information acquired in the acquiring step.
- a program for a relay device for connecting a plurality of ISPs and a user terminal wherein the relay device receives a packet from the user terminal by the receiving unit and the receiving unit.
- Destination acquisition means for acquiring the destination IP address from the packet domain name acquisition means for acquiring the domain name corresponding to the destination IP address acquired by the destination acquisition means from the DNS server, and storing the ISP in association with the domain name It functions as a transmission unit that sends a bucket to the ISP stored in the destination storage unit in association with the domain name acquired by the destination storage unit and the domain name acquisition unit.
- a program for a relay device for connecting a plurality of ISPs to a user terminal wherein the relay device accesses the relay device via any of the plurality of ISPs
- Route information obtaining means for obtaining route information between the communication terminal and each of the plurality of ISPs; and, based on the route information obtained by the route information obtaining means, one of the plurality of ISPs and terminal identification information of the communication terminal.
- Destination storing means for storing packets from the user terminal, and terminal identification information for acquiring terminal identification information of the destination communication terminal from the packets received by the receiving means. It functions as a transmission unit that transmits a packet to the ISP stored in the destination storage unit in association with the terminal identification information obtained by the report acquisition unit and the terminal identification acquisition unit.
- a relay device for connecting a user terminal to the Internet, and a plurality of ISPs for authenticating the relay device and permitting connection to the Internet.
- Receiving section for receiving a destination IP address from a packet received by the receiving section; and a domain name obtaining section for obtaining a domain name corresponding to the destination IP address obtained by the destination obtaining section from a DNS server.
- a destination storage unit that stores an ISP and a domain name in association with each other; and a transmission unit that transmits a bucket to the ISP stored in the destination storage unit in association with the domain name acquired by the domain name acquisition unit.
- a relay device for connecting a user terminal to the Internet, and a plurality of ISPs for authenticating the relay device and permitting connection to the Internet.
- a route information acquiring unit that acquires route information between a communication terminal that accesses via one of the ISPs and each of the plurality of ISPs; and a plurality of route information acquiring units that acquire route information based on the route information acquired by the route information acquiring unit.
- a destination storage unit that stores one of the ISPs in association with the terminal identification information of the communication terminal, a reception unit that receives a packet from the user terminal, and a terminal identification information of the destination communication terminal from the bucket received by the reception unit. It has a terminal identification information acquisition unit to acquire, and a transmission unit to transmit a packet to the ISP stored in the destination storage unit in association with the terminal identification information acquired by the terminal identification acquisition unit.
- FIG. 1 shows an example of a configuration of a communication system 10 according to an embodiment of the present invention.
- FIG. 2 shows an example of a functional configuration of a router 100 according to the embodiment.
- FIG. 3 shows an example of the data format of the access count storage unit 116 according to the present embodiment. .
- FIG. 4 shows an example of the data format of the history information storage unit 114 according to the present embodiment.
- FIG. 5 shows an example of the data format of the destination storage unit 110 according to the present embodiment.
- FIG. 6 shows an example of an operation flow of the ISP selection method of the router 100 according to the present embodiment.
- FIG. 7 shows an example of an operation flow of the bucket relay method of the router 100 according to the present embodiment.
- FIG. 8 shows an example of a hardware configuration of the user terminal 300a according to the present embodiment.
- FIG. 1 shows an example of a configuration of a communication system 10 according to an embodiment of the present invention.
- the communication system 10 includes a router 1 ⁇ 0 which is an example of a relay device for connecting the user terminals 300 a to 300 c to the Internet 20, and a plurality of devices which authenticate the router 100 and permit connection to the Internet 20.
- ISPs 200a to 200c are examples of the Internet 20.
- the router 100 establishes a session with each of a plurality of ISPs, for example, by a PPPoE connection. Then, when receiving the packet received from the user terminals 300a to 300c, the router 100 selects one of the ISPs 200a to 200c based on the destination of the received bucket. And The router 100 transmits the received packet to the Internet 20 via the selected ISP. ⁇
- the router 100 stores the terminal identification information for identifying the Web server 400 and the ISP 200a in association with each other, and stores the terminal identification information for identifying the FTP server 402 and the ISP 200b in association with each other. Then, the terminal identification information for identifying the DNS server 500 and the ISP 200c are stored in association with each other. In this case, the router 100 transmits a packet addressed to the web server 400 received from the user terminals 300a to 300c via the ISP 200a, and transmits a packet addressed to the FTP server 402 via the ISP 200b. Then, the packet addressed to the DNS server 500 is transmitted through the ISP 200c.
- the router 100 performs the normal operation of the user without making the user using the user terminals 300a to 300c aware that a plurality of sessions are established. ISPs to be connected can be dynamically switched, and multiple sessions can be used efficiently.
- FIG. 2 shows an example of a functional configuration of the router 100 according to the present embodiment.
- the router 100 is connected to the ISPs 200a to 200c to transmit and receive buckets to and from the ISPs 200a to 200c, and to the user terminals 300a to 300c connected to the user terminals 300a to 300c.
- the inner transceiver 104 that transmits and receives packets to and from the 300c, the outer transceiver 1102, and the communication controller 106 that controls communication between the inner transceiver 104 and the user terminals 300 & to 3000 are 13 ?
- the outer transmission / reception unit 102 stores the ISP stored in the destination storage unit 110 in association with the terminal identification information acquired by the terminal identification information acquisition unit 112, and the inner transmission / reception unit 104 transmits the user terminal 300a to 300 Send the packet received from c.
- the terminal identification information acquisition unit 1 1 2 is acquired by the destination acquisition unit 1 1 8 that acquires the destination IP address from the bucket received by the inner transmission / reception unit 104 from the user terminal 300 a to 300 c, and the address acquisition unit 1 1 8 And a domain name acquiring unit 120 for acquiring a domain name corresponding to the designated destination IP address from the DNS server 500.
- the domain name acquisition unit 120 transmits a reverse DNS request packet including the destination IP address acquired by the destination acquisition unit 118 to the DNS server 500 via the outer transmission / reception unit 102, so that the destination
- the route information acquisition unit 108 acquires a domain name corresponding to the IP address.
- the route information acquisition unit 108 establishes a connection between the communication terminal identified by the domain name, which is an example of the terminal identification information, and each of the ISPs 200a to 200c. Get route information. Then, the destination storage unit 110 stores any one of the ISPs 200a to 200c in association with the domain name based on the route information acquired by the route information acquisition unit 108.
- the outer transmitting / receiving section 102 receives the ISP stored in the destination storage section 110 in association with the domain name acquired by the domain name acquiring section 120, and the inner transmitting / receiving section 104 receives from the user terminals 300a to 300c.
- the route information acquisition unit 108 transmits the packet to a communication terminal identified by a predetermined domain name via each of the ISPs 200a to 200c. Then, the route information acquisition unit 108 determines, as the route information, the number of hops between the communication terminal identified by the predetermined domain name and the router 100 and the response time from the communication terminal identified by the predetermined domain name. For each of the ISPs 200a to 200c. Then, the destination storage unit 110 stores an ISP when the number of hops acquired by the route information acquisition unit 108 is smaller than other ISPs, for example. And a predetermined domain name are stored in association with each other. The destination storage unit 110 stores, for example, an ISP whose response time acquired by the route information acquisition unit 108 is shorter than other ISPs, and a predetermined domain name in association with each other.
- the route information acquisition unit 108 transmits a pin packet to, for example, the web server 400 via each of the ISPs 200a to 200c. Then, the route information acquiring unit 10 receives a response bucket from the Web server 400 for the transmitted pin packet, and acquires the hop count and the response time. Then, based on the number of hops or response time when a bucket is transmitted via each of the ISPs 200a to 200c, the route information acquisition unit 108 passes through any of the ISPs 200a to 200c. Search if the case is the shortest route to Web server 400. Then, the destination storage unit 110 stores the ISP that passes through when the route becomes the shortest route and the domain name that is the terminal identification information of the web server 400 in association with each other.
- the router 100 further includes a history information storage unit 114 that stores the route information acquired by the route information acquisition unit 108 in association with the time.
- the destination storage unit 110 may store any one of the ISPs 200a to 200c and the domain name in association with each time zone based on the route information stored in the history information storage unit 114.
- the router 100 further includes an access count storage unit 116 that stores the number of accesses to the communication terminal identified by the domain name in association with the domain name.
- the route information acquisition unit 108 is provided between the communication terminal identified by the domain name in which the access count stored in the access count storage unit 116 is larger than the predetermined count and each of the ISPs 200a to 200c. Route information may be acquired. Then, the destination storage unit 110 may store the domain name whose access count is larger than the predetermined count in association with any one of ISP 20 ⁇ a to 200 c.
- FIG. 3 shows an example of the data format of the access count storage unit 116 according to the present embodiment.
- the access count storage unit 116 stores a domain name for identifying a communication terminal on the Internet 20 and the number of accesses to the communication terminal identified by the domain name within a predetermined period.
- the access count storage unit 116 counts the number of accesses from the user terminals 300a to 300c to the communication terminal identified by the domain name in one week or one day, for example. Then, the route information obtaining unit 108 obtains the route information between the communication terminal identified by the domain name and each of the ISPs 200a to 200c based on the number of accesses. For example, the route information acquisition unit 108 acquires route information between a communication terminal identified by a domain name having an access count of 10 or more times a day and each of the ISPs 200a to 200c. . The destination storage unit 110 stores the domain name and one of the ISPs 200a to 200c in association with each other based on the route information acquired by the route information acquisition unit 108.
- FIG. 4 shows an example of the data format of the history information storage unit 114 according to the present embodiment.
- the history information storage unit 114 identifies the domain name for identifying the communication terminal on the Internet 20, the time when the route information acquisition unit 108 acquired the route information, and the ISP 200a to 200c. ISP identification information and response time, which is an example of route information, are stored in association with each other.
- the route information acquisition unit 108 receives a message identified by the domain name “aa a.co.jp” via each of the ISPs 200a to 200c. A ping packet is sent to the communication terminal to search for a response time. Further, at time “8:00”, the route information acquisition unit 108 sends a ping packet to the communication terminal identified by the domain name “aa a.co.jp” via each of the ISPs 200a to 200c. Send response time to search for response time.
- the history information storage unit 114 stores the response time acquired by the route information acquisition unit 108 in correspondence with the time, for each of the ISPs 200a to 200c. Specifically, at time “2:00”, the response time when passing through ISP 200a is the shortest, and at time “8:00”, the response time when passing through ISP 200b is the shortest. short. Then, the destination storage unit 110 stores one of the ISPs 200a to 200c and the domain name in association with each time zone based on the response time at each time.
- FIG. 5 shows an example of the data format of the destination storage unit 110 according to the present embodiment.
- the destination storage unit 110 stores the ISP identification information for identifying the ISP 200 a to 200 c and the domain name for identifying the communication terminal on the Internet 20 for each time zone. In addition, the destination storage unit 110 further stores an IP address for identifying a communication terminal on the Internet 20 in association with the ISP identification information.
- the destination storage unit 110 stores an ISP that minimizes the number of hops to the communication terminal identified by the domain name or minimizes the response time in each time slot. For example, as shown in Fig. 4, communication identified by the domain name “aaa.co.jp” ⁇ The response time of the terminal is that at 2:00, ISP 200a is shorter than other ISPs. At time "8:00", ISP 200b is shorter than other ISPs. Therefore, as shown in FIG. 5, the destination storage unit 110 stores the domain name “aaa.co.jp J” in the time zone “0:00 to 6:00” in association with the ISP 200a.
- Time zone “6:00 to 12:00” is stored in association with ISP 200b
- “*” stored in the destination storage unit 110 in association with the ISP 200 c is a field card
- the outer transmission / reception unit 102 is a domain stored in association with the ISP 200 a and 200 b.
- a packet addressed to a communication terminal identified by a domain name other than the name is transmitted via the ISP 200c.
- the destination storage unit 110 stores the domain name for identifying the communication terminal having a large number of access times in association with one of the ISPs 200a to 200c.
- an ISP to be passed can be selected so that the number of hops is small or the response time is short.
- the destination storage unit 110 stores any one of the ISPs 200a to 200c in association with the domain name for each time zone, so that the communication terminal is accessed.
- the ISP to be passed can be selected so that the number of hops is small or the response time is short.
- FIG. 6 shows an example of an operation flow of the ISP selection method of the router 100 according to the present embodiment.
- the route information acquisition unit 108 refers to the access count stored in the access count storage unit 116 (S100), and selects a domain name whose access count is greater than the predetermined count (S102).
- the route information acquisition unit 108 may select a domain name with a higher access frequency ranking.
- the route information acquisition unit 108 may arbitrarily select a domain name.
- the route information acquisition unit 108 sends a ping packet to each communication terminal identified by the selected domain name via each of the ISPs 200a to 200c. Is transmitted (S104). Then, the route information acquisition unit 108 receives a response packet from the communication terminal with respect to the transmitted ping packet (S106), and determines the number of hops and the response time when passing through each of the ISPs 200a to 200c. Acquisition (S108).
- the route information acquisition unit 108 when accessing the communication terminal identified by the domain name selected in S102, selects one of the ISPs 200a to 200c. Select which ISP to go through (S110). Then, the destination storage unit 110 stores the domain name selected by the route information acquisition unit 108 and the ISP in association with each other (S112). Thus, the operation flow of the ISP selection method ends.
- FIG. 7 shows an example of an operation flow of the bucket relay method of the router 100 according to the present embodiment.
- the inner transmitting / receiving section 104 receives a packet to be transmitted to the Internet 20 from any of the user terminals 300a to 300c (S200). Then, the destination acquisition unit 118 acquires the destination IP address from the bucket received by the inner transmission / reception unit 104 in S200 (S202). Then, the domain name acquiring unit 120 transmits the reverse DNS request packet including the destination IP address acquired by the destination acquiring unit 118 to the DNS server 500 via the outer transmitting / receiving unit 102, Acquire the domain name corresponding to the destination IP address (S2'04).
- the communication control unit 106 selects the ISP stored in the destination storage unit 110 in association with the domain name acquired by the domain name acquisition unit 120 (S206). Then, the outer transmitting / receiving section 102 is controlled by the communication control section 106, and the communication control section 106 receives the signal at S200 via the ISP selected at S206. The transmitted packet is transmitted (S208).
- the inner transmitting / receiving unit 104 receives a packet to be transmitted to the Internet 20 from any of the user terminals 300a to 300c (S210). Soshi The communication control unit 106 determines whether the source user terminal of the packet received by the inner transmitting / receiving unit 104 in S200 is the same as the user terminal of the bucket received in S210. Is determined (S21 1).
- the communication control unit 106 is not the same as the source user terminal of the packet received in S200 by the inner transmitting / receiving unit 104 in S200 and the source user terminal of the packet received in S210.
- Send (S214 to S220).
- the communication control unit 106 determines that the user terminal of the source of the packet received by the inner transmitting / receiving unit 104 in S 200 is the same as the user terminal of the bucket received in S 210. If it is determined that there is, the communication control unit 106 determines whether a predetermined time has elapsed since the user terminal used the ISP last time (S2122).
- the communication control unit 106 determines that the predetermined time has not elapsed since the last time the user terminal used the ISP, the communication control unit 106 transmits the request via the ISP selected in S206. Then, the inner transmitting / receiving section 104 transmits the packet received in S210 (S220). The operation flow of the packet relay method ends here.
- the outer transmission / reception unit 102 transmits a bucket to the ISP stored in the destination storage unit 110 in association with the domain name acquired by the domain name acquisition unit 120. Until the specified time elapses The transmitting unit 104 transmits a packet received from the same user terminal to the same Tt SP. Therefore, by adjusting the predetermined time during which the same user terminal uses the same ISP, the frequency of the ISP selection operation by the router 100 can be adjusted appropriately, and the router 100 by the ISP selection operation can be adjusted. Routing delay can be reduced.
- FIG. 8 shows an example of a hardware configuration of the user terminal 300a according to the present embodiment.
- the function of the user terminal 300a is realized by the cooperation between a computer 800 having a CPU 810, a ROM 820, a RAM 830, a communication interface 840, and a hard disk drive 850, and a program executed on the computer 800. Will be realized.
- the computer 800 may further include a floppy disk drive 860 and / or a CD_ROM drive 870.
- the communication interface 840 communicates with the router 100 via a computer network, and provides programs stored in a floppy disk 880, a CD-ROM 890, or the like to the router 100.
- the programs that implement the functions of the router 100 include an outer transmission / reception module, an inner transmission / reception module, a communication control module, a route information acquisition module, a destination storage module, a terminal identification information acquisition module, a history information storage module, an access count storage module, A destination acquisition module and a domain name acquisition module are provided. These modules connect the computer 800 to the outer transmission / reception unit 102, the inner transmission / reception unit 104, the communication control unit 106, the route information acquisition unit 108, the destination storage unit 110, the terminal identification information acquisition unit 112, and the history information storage unit 1 14, a program that operates as the access count storage unit 116, the destination acquisition unit 118, and the domain name acquisition unit 120.
- the programs or modules described above include, in addition to the floppy disk 880 and CD-ROM 890, optical recording media such as DVD and PD, magneto-optical recording media such as MD, tape media, and Ic cards. It may be stored in a semiconductor memory or the like. Ma In addition, a storage device such as a hard disk or a RAM installed in a server system connected to a dedicated communication network or the Internet is used as a recording medium, and a program is executed via an external network or a network connected to the computer 800. It may be provided to the router 100.
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Description
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Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2002/006871 WO2004006518A1 (ja) | 2002-07-05 | 2002-07-05 | 中継機器、中継方法、プログラム、及び通信システム |
JP2004519186A JPWO2004006518A1 (ja) | 2002-07-05 | 2002-07-05 | 中継機器、中継方法、プログラム、及び通信システム |
AU2002346176A AU2002346176A1 (en) | 2002-07-05 | 2002-07-05 | Relay apparatus, relay method, program, and communication system |
US10/064,947 US20040004969A1 (en) | 2002-07-05 | 2002-09-02 | Interconnecting device, interconnecting method, computer readable medium and communication system |
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PCT/JP2002/006871 WO2004006518A1 (ja) | 2002-07-05 | 2002-07-05 | 中継機器、中継方法、プログラム、及び通信システム |
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US (1) | US20040004969A1 (ja) |
JP (1) | JPWO2004006518A1 (ja) |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007056960A1 (fr) * | 2005-11-18 | 2007-05-24 | Huawei Technologies Co., Ltd. | Reseau de commutation de dispositif de service et dispositif de service de commutation |
JP2008022245A (ja) * | 2006-07-12 | 2008-01-31 | Nippon Telegr & Teleph Corp <Ntt> | 経路制御方法とプログラムおよびエリア間通信装置とネットワーク経路制御システム |
JP2016152547A (ja) * | 2015-02-18 | 2016-08-22 | 日本電気株式会社 | 移動通信システムおよび経路選択方法 |
JP5994957B1 (ja) * | 2015-11-05 | 2016-09-21 | 三菱電機株式会社 | 通信装置及び通信方法 |
JP2017005604A (ja) * | 2015-06-15 | 2017-01-05 | 株式会社エヌ・ティ・ティ ピー・シー コミュニケーションズ | 中継装置および中継装置の制御方法 |
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JPWO2004045164A1 (ja) * | 2002-11-14 | 2006-03-16 | アライドテレシスホールディングス株式会社 | データ中継装置、取得した要求の送信先を決定する方法、及びそれをコンピュータにおいて実現するプログラム |
CN100454865C (zh) * | 2005-08-23 | 2009-01-21 | 华为技术有限公司 | 实现网络服务提供商域名发现的方法 |
US20070101019A1 (en) * | 2005-11-03 | 2007-05-03 | Cromer Daryl C | Apparatus, system, and method for managing response latency |
US20120327931A1 (en) * | 2011-06-21 | 2012-12-27 | Alcatel-Lucent Usa Inc. | Gateways integrating name-based networks with host-based networks |
CN103023729A (zh) * | 2011-09-22 | 2013-04-03 | 中兴通讯股份有限公司 | 中继节点选择方法及装置 |
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Cited By (9)
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WO2007056960A1 (fr) * | 2005-11-18 | 2007-05-24 | Huawei Technologies Co., Ltd. | Reseau de commutation de dispositif de service et dispositif de service de commutation |
JP2008022245A (ja) * | 2006-07-12 | 2008-01-31 | Nippon Telegr & Teleph Corp <Ntt> | 経路制御方法とプログラムおよびエリア間通信装置とネットワーク経路制御システム |
JP2016152547A (ja) * | 2015-02-18 | 2016-08-22 | 日本電気株式会社 | 移動通信システムおよび経路選択方法 |
JP2017005604A (ja) * | 2015-06-15 | 2017-01-05 | 株式会社エヌ・ティ・ティ ピー・シー コミュニケーションズ | 中継装置および中継装置の制御方法 |
JP5994957B1 (ja) * | 2015-11-05 | 2016-09-21 | 三菱電機株式会社 | 通信装置及び通信方法 |
WO2017077613A1 (ja) * | 2015-11-05 | 2017-05-11 | 三菱電機株式会社 | 通信装置及び通信方法 |
CN108141414A (zh) * | 2015-11-05 | 2018-06-08 | 三菱电机株式会社 | 通信装置和通信方法 |
US10812383B2 (en) | 2015-11-05 | 2020-10-20 | Mitsubishi Electric Corporation | Communication apparatus and communication method |
CN108141414B (zh) * | 2015-11-05 | 2021-05-11 | 三菱电机株式会社 | 通信装置和通信方法 |
Also Published As
Publication number | Publication date |
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JPWO2004006518A1 (ja) | 2005-11-10 |
US20040004969A1 (en) | 2004-01-08 |
AU2002346176A1 (en) | 2004-01-23 |
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