WO2011064923A1 - 中継装置 - Google Patents
中継装置 Download PDFInfo
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- WO2011064923A1 WO2011064923A1 PCT/JP2010/005215 JP2010005215W WO2011064923A1 WO 2011064923 A1 WO2011064923 A1 WO 2011064923A1 JP 2010005215 W JP2010005215 W JP 2010005215W WO 2011064923 A1 WO2011064923 A1 WO 2011064923A1
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- rule information
- rule
- transfer destination
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/35—Switches specially adapted for specific applications
- H04L49/355—Application aware switches, e.g. for HTTP
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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
- H04L45/302—Route determination based on requested QoS
- H04L45/308—Route determination based on user's profile, e.g. premium users
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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
- H04L12/5601—Transfer mode dependent, e.g. ATM
- H04L2012/5603—Access techniques
Definitions
- the present invention relates to a relay device for transferring data.
- the data includes attribute information representing each of a plurality of attributes included in the data.
- the attributes of the data include, for example, the IP (Internet Protocol) address of the data transmission source, the MAC (Media Access Control) address of the data transmission source, the IP address of the data transmission destination, and the MAC address of the data transmission destination Etc.
- IP Internet Protocol
- MAC Media Access Control
- a relay device described in Patent Document 1 stores rule information for specifying a transfer destination device in a storage device based on attribute information.
- the relay device identifies the transfer destination device based on the attribute information included in the received data and the rule information stored in the storage device. Then, the relay device transmits (transfers) the received data to the specified transfer destination device.
- the relay device when the amount of rule information stored in the storage device becomes excessive, the newly received rule information cannot be stored in the storage device. Therefore, in this case, the relay device cannot transfer data based on all of the stored rule information and the accepted rule information.
- the relay device includes a first transfer processing execution unit and a second transfer processing execution unit that transfer data based on rule information having different formats.
- the first transfer processing execution unit performs data based on first rule information for specifying a transfer destination device based on attribute information for each attribute constituting a first attribute group including a plurality of attributes.
- the second transfer processing execution unit is based on second rule information for specifying a transfer destination device based on attribute information for each attribute constituting the second attribute group including a part of a plurality of attributes. Transfer the data.
- the first rule information is stored in the first storage device
- the second rule information is stored in the second storage device.
- the first attribute group includes a data transmission source IP address, a data transmission source MAC address, a data transmission destination IP address, and a data transmission destination MAC address, and the second attribute group. Is assumed to consist of the IP address of the data transmission destination.
- the relay device when the information amount of the first rule information stored in the first storage device becomes excessive, the newly received first rule information is converted into the second rule information, and after the conversion It is considered that it is preferable to configure the relay device so that the second rule information is stored in the second storage device. However, in this case, a part of the accepted first rule information is lost. Therefore, the relay device cannot transfer data based on all of the stored rule information and the accepted rule information.
- an object of the present invention is to provide a relay device that can solve the above-described problem that “data cannot be transferred based on all rule information”.
- a relay apparatus In order to achieve such an object, a relay apparatus according to one aspect of the present invention
- the device is connected to each of a plurality of external devices and transmits data received from one of the plurality of external devices to a transfer destination device that is another one of the plurality of external devices.
- the data includes attribute information representing each of a plurality of attributes of the data.
- the relay device First rule information storage means for storing first rule information for specifying the transfer destination device based on attribute information for each attribute constituting the first attribute group consisting of the plurality of attributes;
- Second rule information storage means for storing second rule information for identifying the transfer destination device based on attribute information for each attribute constituting a second attribute group comprising a part of the plurality of attributes;
- the amount of information stored in the first rule information storage means is larger than a preset first threshold amount, only the attribute information for each attribute constituting the second attribute group is used.
- the second rule is used as the second rule information.
- a transfer control unit that stores the information in the information storage unit and performs a transition process of deleting the first rule information from the first rule information storage unit; Is provided.
- the relay method is The relay device is connected to each of a plurality of external devices and is applied to a relay device that transmits data received from one of the plurality of external devices to a transfer destination device that is another one of the plurality of external devices.
- the data includes attribute information representing each of a plurality of attributes of the data.
- the relay device First rule information storage means for storing first rule information for specifying the transfer destination device based on attribute information for each attribute constituting the first attribute group consisting of the plurality of attributes;
- Second rule information storage means for storing second rule information for identifying the transfer destination device based on attribute information for each attribute constituting a second attribute group comprising a part of the plurality of attributes; , Is provided.
- the above relay method In the case where the amount of information stored in the first rule information storage means is larger than a preset first threshold amount, only the attribute information for each attribute constituting the second attribute group is used.
- the second rule is used as the second rule information. This is a method for performing a transition process for storing the first rule information from the first rule information storage unit while storing the information in the information storage unit.
- the program which is the other form of this invention is: A program executed by a relay device that is connected to each of a plurality of external devices and that transmits data received from one of the plurality of external devices to a transfer destination device that is another one of the plurality of external devices It is.
- the data includes attribute information representing each of a plurality of attributes of the data.
- the relay device First rule information storage means for storing first rule information for specifying the transfer destination device based on attribute information for each attribute constituting the first attribute group consisting of the plurality of attributes; Second rule information storage means for storing second rule information for identifying the transfer destination device based on attribute information for each attribute constituting a second attribute group comprising a part of the plurality of attributes; , Is provided.
- the program is stored in the relay device. In the case where the amount of information stored in the first rule information storage means is larger than a preset first threshold amount, only the attribute information for each attribute constituting the second attribute group is used.
- the present invention is configured as described above, and can transfer data based on all rule information.
- the relay apparatus 1 includes a plurality of ports 2a, 2b,..., A first transfer processing unit 11, a second transfer processing unit 12, and a transfer control unit. 13.
- the relay device 1 is connected to each of a plurality of external devices (not shown) via a plurality of ports 2a, 2b,.
- the relay device 1 is configured to transmit data received from one of the plurality of external devices to a transfer destination device that is another one of the plurality of external devices.
- the data is a packet.
- the data may be a frame or a segment.
- the data includes attribute information representing each of a plurality of attributes of the data.
- the plurality of attributes are the IP (Internet Protocol) address of the data transmission source, the MAC (Media Access Control) address of the data transmission source, the IP address of the data transmission destination, and the MAC of the data transmission destination. It consists of an address.
- the plurality of attributes may include information representing the type of data (for example, data representing audio or data representing video), information representing communication priority, and the like.
- the plurality of attributes may be any combination of two or more of the above-described information.
- the first transfer processing unit 11 includes a first rule information storage unit (first rule information storage unit) 11a and a first transfer processing execution unit (first transfer processing execution unit) 11b.
- the first rule information storage unit 11a stores first rule information for specifying a transfer destination device based on attribute information for each attribute constituting the first attribute group including the plurality of attributes. As shown in FIG. 2, the first rule information includes first rule identification information for identifying the first rule information, a source MAC address, a source IP address, and a destination MAC address. And a destination IP address and port identification information for identifying the port.
- the transmission source MAC address is information indicating a range of attribute information with respect to the MAC address of the data transmission source (that is, a range of the MAC address).
- the transmission source IP address is information indicating a range of attribute information (that is, a range of IP addresses) with respect to the IP address of the data transmission source.
- the transmission destination MAC address is information representing a range of attribute information (that is, a MAC address range) with respect to the MAC address of the data transmission destination.
- the transmission destination IP address is information indicating a range of attribute information (that is, a range of IP addresses) for the IP address of the transmission destination of data.
- the transmission source MAC address, the transmission source IP address, the transmission destination MAC address, and the transmission destination IP address constitute first range specifying information that represents a range of attribute information for each attribute constituting the first attribute group.
- the first rule information includes the first attribute condition that the attribute information included in the data is included in the range represented by the first range specifying information with respect to each attribute constituting the first attribute group. It can be said that it includes.
- the port identification information constitutes transfer destination identification information for identifying the transfer destination device.
- the first transfer processing unit 11 receives first rule information.
- the first transfer processing unit 11 receives the first rule information input by the user of the relay device 1.
- the first transfer processing unit 11 may receive the first rule information received by the relay device 1 from the external device. Further, the first transfer processing unit 11 may receive the first rule information generated by the relay device 1.
- the first transfer processing unit 11 stores the received first rule information in the first rule information storage unit 11a.
- the first transfer processing execution unit 11b When the relay device 1 receives data, the first transfer processing execution unit 11b includes attribute information included in the received data, and first rule information stored in the first rule information storage unit 11a. , The transfer destination device is specified. The first transfer processing execution unit 11b transmits the data to the specified transfer destination device.
- the first transfer processing execution unit 11b receives the above-described one of the first attribute conditions included in the first rule information stored in the first rule information storage unit 11a. It is determined whether or not the attribute information included in the data is satisfied.
- the first transfer processing execution unit 11b for each attribute constituting the first attribute group, when the attribute information included in the data is included in the range represented by the first range specifying information, It is determined that the attribute information included in the received data satisfies the first attribute condition.
- the first transfer processing execution unit 11b determines that any of the first attribute conditions is satisfied by the attribute information included in the received data, the first rule including the first attribute condition
- the data is transmitted (transferred) to the external device via the port identified by the port identification information included in the information.
- information indicating “discard” is set as the port identification information, the first transfer processing execution unit 11b discards (discards) the data without transferring it to the external device.
- the second transfer processing unit 12 includes a second rule information storage unit (second rule information storage unit) 12a and a second transfer processing execution unit (second transfer processing execution unit) 12b.
- the second rule information storage unit 12a transfers the transfer destination based on the attribute information for each attribute that constitutes the second attribute group including a part of the plurality of attributes (in this example, the IP address of the data transmission destination). Second rule information for specifying a device is stored. As shown in FIG. 3, the second rule information includes second rule identification information for identifying the second rule information, a destination IP address, and port identification information.
- the transmission destination IP address is information indicating a range of attribute information for the data transmission destination IP address (that is, an IP address range).
- the transmission destination IP address constitutes second range specifying information indicating the range of attribute information for each attribute constituting the second attribute group. That is, the second rule information has a second attribute condition that, for each attribute constituting the second attribute group, the attribute information included in the data is included in a range represented by the second range specifying information. It can be said that it includes.
- the second transfer processing unit 12 receives the second rule information.
- the second transfer processing unit 12 receives the second rule information input by the user of the relay device 1.
- the second transfer processing unit 12 may receive the second rule information received by the relay device 1 from the external device. Further, the second transfer processing unit 12 may accept the second rule information generated by the relay device 1.
- the second transfer processing unit 12 stores the received second rule information in the second rule information storage unit 12a.
- the second transfer processing execution unit 12b receives the attribute information included in the received data, the second rule information stored in the second rule information storage unit 12a, and , The transfer destination device is specified.
- the second transfer processing execution unit 12b transmits the data to the specified transfer destination device.
- the second transfer processing execution unit 12b receives the above-described one of the second attribute conditions included in the second rule information stored in the second rule information storage unit 12a. It is determined whether or not the attribute information included in the data is satisfied.
- the second transfer processing execution unit 12b for each attribute constituting the second attribute group, when the attribute information included in the data is included in the range represented by the second range specifying information, It is determined that the attribute information included in the received data satisfies the second attribute condition.
- the second transfer processing execution unit 12b determines that the attribute information included in the received data satisfies any of the second attribute conditions, the second rule including the second attribute condition
- the data is transmitted (transferred) to the external device via the port identified by the port identification information included in the information.
- information indicating “discard” is set as the port identification information, the second transfer processing execution unit 12b discards (discards) the data without transferring it to the external device.
- the second transfer processing execution unit 12b includes the first rule information included in the first rule information stored in the first rule information storage unit 11a and the attribute information included in the data received by the relay device 1.
- the first transfer processing execution unit 11b determines that any one of the attribute conditions is satisfied, the above processing for transferring or discarding the data is not executed.
- the transfer control unit 13 includes a difference information storage unit (difference information storage unit) 13a.
- difference information storage unit difference information storage unit
- First rule information including first range specifying information for defining a range including arbitrary attribute information (in this example, expressed as “Any”) for each attribute other than the attributes constituting the attribute group of Is stored in the first rule information storage unit 11a.
- the 1st range specific information which defines the range containing arbitrary attribute information with respect to each attribute other than the attribute which comprises a 2nd attribute group among the attributes which comprise a 1st attribute group is 1st.
- the first rule information is the first rule information including the condition for only the second attribute group as the first attribute condition.
- the first rule information is information for specifying the transfer destination device based only on the attribute information for each attribute constituting the second attribute group.
- the attributes other than the attributes constituting the second attribute group are the MAC address of the data transmission source, the IP address of the data transmission source, and , The MAC address of the data transmission destination.
- the transfer control unit 13 specifies a first range that defines a range including arbitrary attribute information for each attribute other than the attribute constituting the second attribute group among the attributes constituting the first attribute group.
- the migration process includes a second range specifying information including a second range specifying information including a portion defining a range for each attribute constituting the second attribute group of the first range specifying information included in the first rule information.
- the second rule information storage unit 12a stores the second rule information including the attribute condition and the transfer destination identification information included in the first rule information. Further, the migration process includes a process of deleting the first rule information from the first rule information storage unit 11a.
- the second rule information newly stored in the migration process includes the first attribute condition included in the first rule information as the second attribute condition, and the transfer destination included in the first rule information. It can be said that the information includes identification information.
- the transfer control unit 13 constitutes a part of the first range specifying information included in the first rule information to be deleted in the transfer process, and the first attribute A portion that defines a range for each attribute other than the attribute configuring the second attribute group among the attributes configuring the group is generated as difference information.
- the transfer control unit 13 stores the generated difference information in the difference information storage unit 13a.
- the difference information includes the first rule identification information for identifying the first rule information to be erased in the migration process, and the second rule information stored in the migration process. It includes second rule identification information for identification, a transmission source MAC address, a transmission source IP address, and a transmission destination MAC address.
- the transfer control unit 13 determines whether the information amount stored in the first rule information storage unit 11a is smaller than the preset second threshold amount every time a preset determination cycle elapses. Determine whether or not.
- the second threshold amount is an amount smaller than the first threshold amount.
- the transfer control unit 13 determines that the amount of information stored in the first rule information storage unit 11a is smaller than the second threshold amount, whether or not difference information is stored in the difference information storage unit 13a. Determine.
- the transfer control unit 13 determines that the difference information is stored in the difference information storage unit 13a, the second rule information identified by the difference information and the second rule identification information included in the difference information. Based on (that is, the second rule information stored in the second rule information storage unit 12a in the migration process), the first rule information erased in the migration process is generated.
- the transfer control unit 13 stores the generated first rule information in the first rule information storage unit 11a and performs a restoration process for deleting the second rule information from the second rule information storage unit 12a. Do.
- the relay device 1 is configured to execute the first rule information registration process shown by the flowchart in FIG. 5 when the relay device 1 is activated.
- the relay device 1 waits until the first rule information is received in step S101. And if the 1st rule information is received, relay device 1 will judge "Yes" and will progress to Step S102.
- the relay apparatus 1 determines whether the information amount memorize
- the relay device 1 determines “Yes” in step S102 and proceeds to step S103.
- the relay device 1 determines whether or not the first rule information that can be migrated exists. Specifically, the relay device 1 includes a range including arbitrary attribute information for each attribute other than the attribute configuring the second attribute group among the attributes configuring the first attribute group (this example). Then, it is determined whether or not the first rule information including the first range specifying information defining “Any” is stored in the first rule information storage unit 11a.
- the first rule information storage unit 11a stores the first rule information as shown in FIG.
- the first rule information including the first rule identification information “F02” is included in each attribute other than the attribute configuring the second attribute group among the attributes configuring the first attribute group.
- the relay device 1 determines “Yes” in step S103, proceeds to step S104, and shifts the first rule information to the second rule information storage unit 12a.
- the relay device 1 includes a second range that includes a portion that defines a range for each attribute constituting the second attribute group of the first range specifying information included in the first rule information. 2nd attribute conditions including specific information (here, transmission destination IP address “IP3”) and transfer destination identification information (here, port identification information “PT2”) included in the first rule information are included.
- the second rule information is stored in the second rule information storage unit 12a.
- the relay device 1 deletes the first rule information from the first rule information storage unit 11a. Thereafter, the relay device 1 proceeds to step S105, and stores the received first rule information in the first rule information storage unit 11a as in the case described above.
- the relay device 1 has a first range that defines a range including arbitrary attribute information for each attribute other than the attribute configuring the second attribute group among the attributes configuring the first attribute group. If the first rule information including the specific information is not stored in the first rule information storage unit 11a (that is, there is no first rule information that can be transferred), it is determined as “No” in step S103. To return to step S101.
- the relay device 1 is configured to execute the packet transfer process shown by the flowchart in FIG. 6 when the relay device 1 is activated.
- the relay device 1 waits in step S201 until a packet is received (received from an external device). Then, when receiving the packet, the relay device 1 determines “Yes” and proceeds to step S202.
- the relay device 1 determines whether or not the received packet matches the first rule information. Specifically, the relay device 1 sets one of the first attribute conditions included in the first rule information stored in the first rule information storage unit 11a to the attribute included in the received packet. It is determined whether the information is satisfied. As described above, the relay device 1 receives the above-described reception when the attribute information included in the packet is included in the range represented by the first range specifying information with respect to each attribute configuring the first attribute group. It is determined that the attribute information included in the received packet satisfies the first attribute condition.
- the received packet now includes “MC1” as attribute information indicating the MAC address of the data transmission source, and includes “IP1” as attribute information indicating the IP address of the data transmission source, and data transmission Assume that “MC2” is included as attribute information representing the previous MAC address, and “IP2” is included as attribute information representing the IP address of the data transmission destination.
- the received packet matches the first rule information including the first rule identification information “F01”. Accordingly, the relay device 1 determines “Yes” in step S202 and proceeds to step S203.
- the relay device 1 transfers the packet based on the matched first rule information. Specifically, the relay device 1 is identified by the port identification information (here, “PT1”) included in the first rule information including the first attribute condition satisfied by the attribute information included in the received packet. The packet is transmitted (transferred) to the external device via the ports 2a, 2b,.
- PT1 port identification information
- the relay device 1 When information indicating “discard” is set as the port identification information, the relay device 1 discards (discards) the packet without transferring it to the external device. Then, the relay device 1 returns to step S201 and repeatedly executes the processes of steps S201 to S205.
- the relay apparatus 1 includes “MC2” as attribute information indicating the MAC address of the data transmission source, includes “IP2” as attribute information indicating the IP address of the data transmission source, and transmits the data. Assume that a packet including “MC1” as attribute information representing the previous MAC address and including “IP1” as attribute information representing the IP address of the data transmission destination is received.
- the relay device 1 determines “No” in step S202 and proceeds to step S204. Then, the relay device 1 determines whether or not the received packet matches the second rule information. Specifically, the relay device 1 sets one of the second attribute conditions included in the second rule information stored in the second rule information storage unit 12a to the attribute included in the received packet. It is determined whether the information is satisfied. Note that, as described above, the relay device 1 receives the above-described reception when the attribute information included in the packet is included in the range represented by the second range specifying information for each attribute configuring the second attribute group. It is determined that the attribute information included in the received packet satisfies the second attribute condition.
- the relay device 1 determines “Yes” in step S204 and proceeds to step S205.
- the relay device 1 transfers the packet based on the matched second rule information. Specifically, the relay device 1 is identified by port identification information (here, “PT3”) included in the second rule information including the second attribute condition satisfied by the attribute information included in the received packet. The packet is transmitted (transferred) to the external device via the ports 2a, 2b,.
- port identification information here, “PT3”
- the relay device 1 When information indicating “discard” is set as the port identification information, the relay device 1 discards (discards) the packet without transferring it to the external device. Then, the relay device 1 returns to step S201 and repeatedly executes the processes of steps S201 to S205.
- the relay device 1 determines “No” in both step S202 and step S204, and transfers the packet. Without returning to step S201. That is, in this case, the relay device 1 discards the received packet.
- the relay device 1 when the received packet does not match either the first rule information or the second rule information, the relay device 1 is configured to acquire information for specifying the transfer destination device for the packet from the external device. May be. In this case, the relay device 1 transfers the packet to the transfer destination device specified by the acquired information. Further, the relay device 1 may be configured to generate information for specifying a transfer destination device for the packet.
- the relay device 1 is configured to execute the first rule information restoration process shown by the flowchart in FIG. 7 every time the determination period elapses.
- the relay device 1 starts the first rule information restoration process
- the information amount stored in the first rule information storage unit 11a is greater than the second threshold amount in step S301. Wait until it becomes smaller.
- the relay device 1 determines “Yes” and proceeds to step S302.
- the relay device 1 determines whether there is second rule information that can be migrated. Specifically, the relay device 1 determines whether or not difference information is stored in the difference information storage unit 13a. Assume that the difference information storage unit 13a stores difference information as shown in FIG.
- the relay device 1 determines “Yes”, proceeds to step S303, and shifts the second rule information to the first rule information storage unit 11a. Specifically, the relay device 1 obtains the first rule information based on the stored difference information and the second rule information identified by the second rule identification information included in the difference information. Generate. That is, the relay device 1 includes the first rule identification information, the transmission source MAC address, the transmission source IP address and the transmission destination MAC address included in the difference information, and the transmission destination IP address and the second rule information. First rule information including port identification information is generated.
- the transfer control unit 13 stores the generated first rule information in the first rule information storage unit 11a and performs a restoration process for deleting the second rule information from the second rule information storage unit 12a. Do. Thereafter, the relay device 1 returns to step S301, and repeatedly executes the processes of steps S301 to S303.
- the relay device 1 determines “No” in step S302, and returns to step S301 without performing the restoration process.
- the relay device 1 when the amount of information stored in the first rule information storage unit 11a becomes excessive, the relay device 1 is stored. Migration processing is performed on the first rule information including information for specifying the transfer destination device based only on the attribute information for each attribute constituting the second attribute group of the first rule information. Do.
- the relay apparatus 1 can memorize
- the first rule information that is the target of the migration process includes information for specifying the transfer destination device based only on the attribute information for each attribute that constitutes the second attribute group. Therefore, before and after execution of the migration process, when the relay device 1 receives an arbitrary packet (data), the relay device 1 can transmit the packet to the same transfer destination device. In this way, the relay device 1 can transfer a packet based on all rule information.
- the relay device 1 when the amount of information stored in the first rule information storage unit 11a is sufficiently small, the first rule information that has been subject to the migration process in the past. Can be restored.
- the relay device 1 may be configured to receive an erasure instruction indicating that the first rule information stored in the first rule information storage unit 11a is to be erased.
- the erasure instruction includes first rule identification information for identifying the first rule information.
- the relay device 1 uses the difference stored in the difference information storage unit 13a. It is preferable that the second rule information stored in the second rule information storage unit 12a is specified by the migration process based on the information, and the specified second rule information is deleted. is there.
- the relay device 1 may be configured to receive a change instruction indicating that the first rule information (for example, port identification information) stored in the first rule information storage unit 11a is to be changed.
- the change instruction includes first rule identification information for identifying the first rule information.
- the relay device 1 uses the difference stored in the difference information storage unit 13a. It is preferable that the second rule information stored in the second rule information storage unit 12a is specified by the migration process based on the information, and the specified second rule information is changed. is there.
- the relay device 100 according to the second embodiment is connected to each of a plurality of external devices, and transfers data received from one of the plurality of external devices as another one of the plurality of external devices. Send to the destination device.
- the data includes attribute information representing each of a plurality of attributes of the data.
- the relay device 100 A first rule information storage unit (first rule) for storing first rule information for specifying the transfer destination device based on attribute information for each attribute constituting the first attribute group consisting of the plurality of attributes. Rule information storage means) 101; A second rule information storage unit for storing second rule information for specifying the transfer destination device based on attribute information for each attribute constituting a second attribute group including a part of the plurality of attributes ( (Second rule information storage means) 102, When the amount of information stored in the first rule information storage unit 101 is larger than a first threshold amount set in advance, the above is based only on attribute information for each attribute constituting the second attribute group.
- the relay device 100 uses the second attribute group in the stored first rule information.
- the migration processing is performed on the first rule information including information for specifying the transfer destination device based only on the attribute information for each attribute that constitutes.
- the relay apparatus 100 when the relay apparatus 100 newly receives the first rule information, the relay apparatus 100 can store the received first rule information in the first rule information storage unit 101.
- the first rule information that is the target of the migration process includes information for specifying the transfer destination device based only on the attribute information for each attribute that constitutes the second attribute group. Therefore, before and after the execution of the migration process, when the relay device 100 receives arbitrary data, the relay device 100 can transmit the data to the same transfer destination device. In this way, the relay device 100 can transfer data based on all rule information.
- the relay device The transfer destination device is specified based on the attribute information included in the received data and the first rule information stored in the first rule information storage unit, and the specified transfer destination device First transfer processing execution means for transmitting the data to The transfer destination device is specified based on the attribute information included in the received data and the second rule information stored in the second rule information storage means, and the specified transfer destination device Second transfer processing execution means for transmitting the data to Is preferably provided.
- the first rule information includes a first attribute condition for the first attribute group, and transfer destination identification information for identifying the transfer destination device.
- the second rule information includes a second attribute condition for the second attribute group, and transfer destination identification information for identifying the transfer destination device,
- the first transfer processing execution means Configured to transmit the data to the transfer destination device identified by the transfer destination identification information included in the first rule information including the attribute condition;
- the second transfer processing execution means Configured to transmit the data to the transfer destination device identified by the transfer destination identification information included in the second rule information including the attribute condition;
- the transfer control means sets the condition for only the second attribute group as the first attribute condition when the information amount stored in the first rule information storage means is larger than the first threshold amount.
- the first attribute condition included in the first rule information is included as a second attribute condition
- the first The migration process for storing the second rule information including the transfer destination identification information included in the rule information in the second rule information storage unit and deleting the first rule information from the first rule information storage unit It is preferable to be configured to perform.
- the first attribute condition includes first range specifying information indicating a range of the attribute information with respect to each attribute constituting the first attribute group, and each attribute constituting the first attribute group.
- the attribute information included in the data is included in the range represented by the first range specifying information.
- the second attribute condition includes second range specifying information indicating a range of the attribute information for each attribute constituting the second attribute group, and for each attribute constituting the second attribute group , The condition that the attribute information included in the data is included in the range represented by the second range specifying information,
- the transfer control means when the amount of information stored in the first rule information storage means is larger than the first threshold amount, of the attributes constituting the first attribute group,
- the first rule information including the first range specifying information for defining the range including arbitrary attribute information is stored in the first rule information storage means for each attribute other than the attributes constituting the second attribute group.
- a second attribute including the second range specifying information including a portion defining the range with respect to each attribute constituting the second attribute group of the first range specifying information when stored.
- Second rule information including a condition and transfer destination identification information included in the first rule information is stored in the second rule information storage unit, and the first rule information is stored in the first rule. Perform the above migration process to erase from the information storage means It is preferably configured.
- the relay device When the migration process is performed, a part of the first range specifying information included in the first rule information to be erased in the migration process, and the attributes constituting the first attribute group Difference information storage means for storing, as difference information, a portion that defines the range for each attribute other than the attributes constituting the second attribute group,
- Difference information is stored when the information amount stored in the first rule information storage unit is smaller than a second threshold amount set in advance, the transfer control unit And the second rule information stored in the migration process, the first rule information erased in the migration process is generated, and the generated first rule information is used as the first rule information. It is preferable to perform a restoration process for storing the second rule information from the second rule information storage unit and storing the second rule information from the second rule information storage unit.
- the relay device when the amount of information stored in the first rule information storage unit becomes sufficiently small, the relay device can restore the first rule information that has been subject to the migration process in the past. it can.
- the first rule information storage unit is configured to store the received first rule information when the relay device receives the first rule information.
- the relay device If the attribute information included in the received data satisfies any of the first attribute conditions included in the stored first rule information, the first transfer processing execution unit transmits the data. On the other hand, if the attribute information included in the received data does not satisfy any of the first attribute conditions included in the stored first rule information, the attribute information included in the received data Is preferably configured to cause the second transfer processing execution means to transmit the data when any one of the second attribute conditions included in the stored second rule information is satisfied. .
- the transfer destination identification information is preferably port identification information for identifying the port.
- the plurality of attributes include the IP (Internet Protocol) address of the data source, the MAC (Media Access Control) address of the data source, the IP address of the data destination, and the data It is preferable to include at least one of the destination MAC addresses.
- the relay method is The relay device is connected to each of a plurality of external devices and is applied to a relay device that transmits data received from one of the plurality of external devices to a transfer destination device that is another one of the plurality of external devices.
- the data includes attribute information representing each of a plurality of attributes of the data.
- the relay device First rule information storage means for storing first rule information for specifying the transfer destination device based on attribute information for each attribute constituting the first attribute group consisting of the plurality of attributes; Second rule information storage means for storing second rule information for identifying the transfer destination device based on attribute information for each attribute constituting a second attribute group comprising a part of the plurality of attributes; , Is provided.
- the relay method is In the case where the amount of information stored in the first rule information storage means is larger than a preset first threshold amount, only the attribute information for each attribute constituting the second attribute group is used.
- the second rule is used as the second rule information. This is a method for performing a transition process for storing the first rule information from the first rule information storage unit while storing the information in the information storage unit.
- the relay method is The transfer destination device is specified based on the attribute information included in the received data and the first rule information stored in the first rule information storage unit, and the specified transfer destination device Send the data to The transfer destination device is specified based on the attribute information included in the received data and the second rule information stored in the second rule information storage means, and the specified transfer destination device It is preferable to transmit the data.
- the program which is the other form of this invention is: A program executed by a relay device that is connected to each of a plurality of external devices and that transmits data received from one of the plurality of external devices to a transfer destination device that is another one of the plurality of external devices It is.
- the data includes attribute information representing each of a plurality of attributes of the data.
- the relay device First rule information storage means for storing first rule information for specifying the transfer destination device based on attribute information for each attribute constituting the first attribute group consisting of the plurality of attributes; Second rule information storage means for storing second rule information for identifying the transfer destination device based on attribute information for each attribute constituting a second attribute group comprising a part of the plurality of attributes; , Is provided.
- the program is stored in the relay device. In the case where the amount of information stored in the first rule information storage means is larger than a preset first threshold amount, only the attribute information for each attribute constituting the second attribute group is used.
- the program is In the above relay device,
- the transfer destination device is specified based on the attribute information included in the received data and the first rule information stored in the first rule information storage unit, and the specified transfer destination device First transfer processing execution means for transmitting the data to
- the transfer destination device is specified based on the attribute information included in the received data and the second rule information stored in the second rule information storage means, and the specified transfer destination device Second transfer processing execution means for transmitting the data to It is preferable that it is a program for realizing.
- each function of the relay device 1 is realized by hardware such as a circuit.
- the relay device 1 includes a processing device and a storage device that stores a program (software), and the processing device may be configured to implement each function by executing the program.
- the program may be stored in a storage device or may be stored in a computer-readable recording medium.
- the recording medium is a portable medium such as a flexible disk, an optical disk, a magneto-optical disk, and a semiconductor memory.
- the present invention can be applied to a router for transferring packets.
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Abstract
Description
複数の外部装置のそれぞれと接続されるとともに、当該複数の外部装置の1つから受信したデータを、当該複数の外部装置の他の1つである転送先装置へ送信する装置である。
加えて、上記中継装置は、
上記複数の属性からなる第1の属性群を構成する各属性に対する属性情報に基づいて上記転送先装置を特定するための第1の規則情報を記憶する第1の規則情報記憶手段と、
上記複数の属性の一部からなる第2の属性群を構成する各属性に対する属性情報に基づいて上記転送先装置を特定するための第2の規則情報を記憶する第2の規則情報記憶手段と、
上記第1の規則情報記憶手段に記憶されている情報量が予め設定された第1の閾値量よりも大きい場合において、上記第2の属性群を構成する各属性に対する属性情報のみに基づいて上記転送先装置を特定するための情報が第1の規則情報として当該第1の規則情報記憶手段に記憶されているとき、当該第1の規則情報を上記第2の規則情報として上記第2の規則情報記憶手段に記憶させるとともに、当該第1の規則情報を当該第1の規則情報記憶手段から消去する移行処理を行う転送制御手段と、
を備える。
複数の外部装置のそれぞれと接続されるとともに、当該複数の外部装置の1つから受信したデータを、当該複数の外部装置の他の1つである転送先装置へ送信する中継装置に適用される。
上記データは、当該データが有する複数の属性のそれぞれを表す属性情報を含む。
更に、上記中継装置は、
上記複数の属性からなる第1の属性群を構成する各属性に対する属性情報に基づいて上記転送先装置を特定するための第1の規則情報を記憶する第1の規則情報記憶手段と、
上記複数の属性の一部からなる第2の属性群を構成する各属性に対する属性情報に基づいて上記転送先装置を特定するための第2の規則情報を記憶する第2の規則情報記憶手段と、
を備える。
加えて、上記中継方法は、
上記第1の規則情報記憶手段に記憶されている情報量が予め設定された第1の閾値量よりも大きい場合において、上記第2の属性群を構成する各属性に対する属性情報のみに基づいて上記転送先装置を特定するための情報が第1の規則情報として当該第1の規則情報記憶手段に記憶されているとき、当該第1の規則情報を上記第2の規則情報として上記第2の規則情報記憶手段に記憶させるとともに、当該第1の規則情報を当該第1の規則情報記憶手段から消去する移行処理を行う方法である。
複数の外部装置のそれぞれと接続されるとともに、当該複数の外部装置の1つから受信したデータを、当該複数の外部装置の他の1つである転送先装置へ送信する中継装置が実行するプログラムである。
加えて、上記中継装置は、
上記複数の属性からなる第1の属性群を構成する各属性に対する属性情報に基づいて上記転送先装置を特定するための第1の規則情報を記憶する第1の規則情報記憶手段と、
上記複数の属性の一部からなる第2の属性群を構成する各属性に対する属性情報に基づいて上記転送先装置を特定するための第2の規則情報を記憶する第2の規則情報記憶手段と、
を備える。
更に、上記プログラムは、上記中継装置に、
上記第1の規則情報記憶手段に記憶されている情報量が予め設定された第1の閾値量よりも大きい場合において、上記第2の属性群を構成する各属性に対する属性情報のみに基づいて上記転送先装置を特定するための情報が第1の規則情報として当該第1の規則情報記憶手段に記憶されているとき、当該第1の規則情報を上記第2の規則情報として上記第2の規則情報記憶手段に記憶させるとともに、当該第1の規則情報を当該第1の規則情報記憶手段から消去する移行処理を行う転送制御手段を実現させるためのプログラムである。
図1に示したように、第1実施形態に係る中継装置1は、複数のポート2a,2b,…と、第1の転送処理部11と、第2の転送処理部12と、転送制御部13と、を備える。中継装置1は、複数のポート2a,2b,…を介して、図示しない複数の外部装置のそれぞれと接続されている。
第1の転送処理部11は、第1の規則情報記憶部(第1の規則情報記憶手段)11aと、第1の転送処理実行部(第1の転送処理実行手段)11bと、を含む。
第1の規則情報は、図2に示したように、当該第1の規則情報を識別するための第1の規則識別情報と、送信元MACアドレスと、送信元IPアドレスと、送信先MACアドレスと、送信先IPアドレスと、ポートを識別するためのポート識別情報と、を含む。
また、ポート識別情報は、転送先装置を識別するための転送先識別情報を構成している。
第1の転送処理部11は、受け付けた第1の規則情報を第1の規則情報記憶部11aに記憶させる。
第2の規則情報は、図3に示したように、当該第2の規則情報を識別するための第2の規則識別情報と、送信先IPアドレスと、ポート識別情報と、を含む。
第2の転送処理部12は、受け付けた第2の規則情報を第2の規則情報記憶部12aに記憶させる。
転送制御部13は、第1の転送処理部11が第1の規則情報を受け付けた場合、第1の規則情報記憶部11aに記憶されている情報量(第1の規則情報の量)が、予め設定された第1の閾値量よりも大きいか否かを判定する。
中継装置1は、図5にフローチャートにより示した第1の規則情報登録処理を、中継装置1の起動時に実行するようになっている。
その後、中継装置1は、ステップS105へ進み、上述した場合と同様に、受け付けた第1の規則情報を第1の規則情報記憶部11aに記憶させる。
このように、中継装置1は、すべての規則情報に基づいてパケットを転送することができる。
次に、本発明の第2実施形態に係る中継装置について図8を参照しながら説明する。
第2実施形態に係る中継装置100は、複数の外部装置のそれぞれと接続されるとともに、当該複数の外部装置の1つから受信したデータを、当該複数の外部装置の他の1つである転送先装置へ送信する。
更に、中継装置100は、
上記複数の属性からなる第1の属性群を構成する各属性に対する属性情報に基づいて上記転送先装置を特定するための第1の規則情報を記憶する第1の規則情報記憶部(第1の規則情報記憶手段)101と、
上記複数の属性の一部からなる第2の属性群を構成する各属性に対する属性情報に基づいて上記転送先装置を特定するための第2の規則情報を記憶する第2の規則情報記憶部(第2の規則情報記憶手段)102と、
第1の規則情報記憶部101に記憶されている情報量が予め設定された第1の閾値量よりも大きい場合において、上記第2の属性群を構成する各属性に対する属性情報のみに基づいて上記転送先装置を特定するための情報が第1の規則情報として第1の規則情報記憶部101に記憶されているとき、当該第1の規則情報を上記第2の規則情報として第2の規則情報記憶部102に記憶させるとともに、当該第1の規則情報を第1の規則情報記憶部101から消去する移行処理を行う転送制御部(転送制御手段)103と、
を備える。
このように、中継装置100は、すべての規則情報に基づいてデータを転送することができる。
上記受信されたデータに含まれる属性情報と、上記第1の規則情報記憶手段に記憶されている第1の規則情報と、に基づいて上記転送先装置を特定し、当該特定された転送先装置へ当該データを送信する第1の転送処理実行手段と、
上記受信されたデータに含まれる属性情報と、上記第2の規則情報記憶手段に記憶されている第2の規則情報と、に基づいて上記転送先装置を特定し、当該特定された転送先装置へ当該データを送信する第2の転送処理実行手段と、
を備えることが好適である。
上記第2の規則情報は、上記第2の属性群に対する第2の属性条件と、上記転送先装置を識別するための転送先識別情報と、を含み、
上記第1の転送処理実行手段は、上記記憶されている第1の規則情報に含まれる第1の属性条件のいずれかを上記受信されたデータに含まれる属性情報が満たすとき、当該第1の属性条件を含む第1の規則情報に含まれる転送先識別情報により識別される転送先装置へ、当該データを送信するように構成され、
上記第2の転送処理実行手段は、上記記憶されている第2の規則情報に含まれる第2の属性条件のいずれかを上記受信されたデータに含まれる属性情報が満たすとき、当該第2の属性条件を含む第2の規則情報に含まれる転送先識別情報により識別される転送先装置へ、当該データを送信するように構成され、
上記転送制御手段は、上記第1の規則情報記憶手段に記憶されている情報量が上記第1の閾値量よりも大きい場合において、上記第2の属性群のみに対する条件を上記第1の属性条件として含む上記第1の規則情報が当該第1の規則情報記憶手段に記憶されているとき、当該第1の規則情報が含む第1の属性条件を第2の属性条件として含み且つ当該第1の規則情報が含む転送先識別情報を含む第2の規則情報を上記第2の規則情報記憶手段に記憶させるとともに、当該第1の規則情報を当該第1の規則情報記憶手段から消去する上記移行処理を行うように構成されることが好適である。
上記第2の属性条件は、上記第2の属性群を構成する各属性に対する上記属性情報の範囲を表す第2の範囲特定情報を含み、上記第2の属性群を構成する各属性に対して、上記データに含まれる属性情報が当該第2の範囲特定情報が表す範囲に含まれる、という条件であり、
上記転送制御手段は、上記第1の規則情報記憶手段に記憶されている情報量が上記第1の閾値量よりも大きい場合において、上記第1の属性群を構成する属性のうちの、上記第2の属性群を構成する属性以外の各属性に対して、任意の属性情報を含む上記範囲を定める上記第1の範囲特定情報を含む第1の規則情報が当該第1の規則情報記憶手段に記憶されているとき、当該第1の範囲特定情報のうちの上記第2の属性群を構成する各属性に対して上記範囲を定める部分を含む上記第2の範囲特定情報を含む第2の属性条件と、当該第1の規則情報が含む転送先識別情報と、を含む第2の規則情報を上記第2の規則情報記憶手段に記憶させるとともに、当該第1の規則情報を当該第1の規則情報記憶手段から消去する上記移行処理を行うように構成されることが好適である。
上記移行処理が行われる場合、当該移行処理において消去される上記第1の規則情報に含まれる第1の範囲特定情報の一部を構成し、且つ、上記第1の属性群を構成する属性のうちの上記第2の属性群を構成する属性以外の各属性に対して上記範囲を定める部分を差分情報として記憶する差分情報記憶手段を備え、
上記転送制御手段は、上記第1の規則情報記憶手段に記憶されている情報量が予め設定された第2の閾値量よりも小さい場合において、上記差分情報が記憶されているとき、当該差分情報と、上記移行処理において記憶させられた第2の規則情報と、に基づいて、当該移行処理において消去された上記第1の規則情報を生成し、当該生成した第1の規則情報を上記第1の規則情報記憶手段に記憶させるとともに、当該第2の規則情報を当該第2の規則情報記憶手段から消去する復元処理を行うように構成されることが好適である。
上記受信されたデータに含まれる属性情報が上記記憶されている第1の規則情報に含まれる第1の属性条件のいずれかを満たす場合、上記第1の転送処理実行手段に当該データを送信させ、一方、当該受信されたデータに含まれる属性情報が上記記憶されている第1の規則情報に含まれる第1の属性条件のいずれも満たさない場合において、当該受信されたデータに含まれる属性情報が上記記憶されている第2の規則情報に含まれる第2の属性条件のいずれかを満たすとき、上記第2の転送処理実行手段に当該データを送信させるように構成されることが好適である。
上記外部装置を当該中継装置に接続するためのポートを複数備え、
上記転送先識別情報は、上記ポートを識別するためのポート識別情報であることが好適である。
複数の外部装置のそれぞれと接続されるとともに、当該複数の外部装置の1つから受信したデータを、当該複数の外部装置の他の1つである転送先装置へ送信する中継装置に適用される。
更に、上記データは、当該データが有する複数の属性のそれぞれを表す属性情報を含む。
加えて、上記中継装置は、
上記複数の属性からなる第1の属性群を構成する各属性に対する属性情報に基づいて上記転送先装置を特定するための第1の規則情報を記憶する第1の規則情報記憶手段と、
上記複数の属性の一部からなる第2の属性群を構成する各属性に対する属性情報に基づいて上記転送先装置を特定するための第2の規則情報を記憶する第2の規則情報記憶手段と、
を備える。
更に、上記中継方法は、
上記第1の規則情報記憶手段に記憶されている情報量が予め設定された第1の閾値量よりも大きい場合において、上記第2の属性群を構成する各属性に対する属性情報のみに基づいて上記転送先装置を特定するための情報が第1の規則情報として当該第1の規則情報記憶手段に記憶されているとき、当該第1の規則情報を上記第2の規則情報として上記第2の規則情報記憶手段に記憶させるとともに、当該第1の規則情報を当該第1の規則情報記憶手段から消去する移行処理を行う方法である。
上記受信されたデータに含まれる属性情報と、上記第1の規則情報記憶手段に記憶されている第1の規則情報と、に基づいて上記転送先装置を特定し、当該特定された転送先装置へ当該データを送信し、
上記受信されたデータに含まれる属性情報と、上記第2の規則情報記憶手段に記憶されている第2の規則情報と、に基づいて上記転送先装置を特定し、当該特定された転送先装置へ当該データを送信することが好適である。
複数の外部装置のそれぞれと接続されるとともに、当該複数の外部装置の1つから受信したデータを、当該複数の外部装置の他の1つである転送先装置へ送信する中継装置が実行するプログラムである。
加えて、上記中継装置は、
上記複数の属性からなる第1の属性群を構成する各属性に対する属性情報に基づいて上記転送先装置を特定するための第1の規則情報を記憶する第1の規則情報記憶手段と、
上記複数の属性の一部からなる第2の属性群を構成する各属性に対する属性情報に基づいて上記転送先装置を特定するための第2の規則情報を記憶する第2の規則情報記憶手段と、
を備える。
更に、上記プログラムは、上記中継装置に、
上記第1の規則情報記憶手段に記憶されている情報量が予め設定された第1の閾値量よりも大きい場合において、上記第2の属性群を構成する各属性に対する属性情報のみに基づいて上記転送先装置を特定するための情報が第1の規則情報として当該第1の規則情報記憶手段に記憶されているとき、当該第1の規則情報を上記第2の規則情報として上記第2の規則情報記憶手段に記憶させるとともに、当該第1の規則情報を当該第1の規則情報記憶手段から消去する移行処理を行う転送制御手段を実現させるためのプログラムである。
上記中継装置に、
上記受信されたデータに含まれる属性情報と、上記第1の規則情報記憶手段に記憶されている第1の規則情報と、に基づいて上記転送先装置を特定し、当該特定された転送先装置へ当該データを送信する第1の転送処理実行手段と、
上記受信されたデータに含まれる属性情報と、上記第2の規則情報記憶手段に記憶されている第2の規則情報と、に基づいて上記転送先装置を特定し、当該特定された転送先装置へ当該データを送信する第2の転送処理実行手段と、
を実現させるためのプログラムであることが好適である。
2a,2b,… ポート
11 第1の転送処理部
11a 第1の規則情報記憶部
11b 第1の転送処理実行部
12 第2の転送処理部
12a 第2の規則情報記憶部
12b 第2の転送処理実行部
13 転送制御部
13a 差分情報記憶部
100 中継装置
101 第1の規則情報記憶部
102 第2の規則情報記憶部
103 転送制御部
Claims (13)
- 複数の外部装置のそれぞれと接続されるとともに、当該複数の外部装置の1つから受信したデータを、当該複数の外部装置の他の1つである転送先装置へ送信する中継装置であって、
前記データは、当該データが有する複数の属性のそれぞれを表す属性情報を含み、
前記複数の属性からなる第1の属性群を構成する各属性に対する属性情報に基づいて前記転送先装置を特定するための第1の規則情報を記憶する第1の規則情報記憶手段と、
前記複数の属性の一部からなる第2の属性群を構成する各属性に対する属性情報に基づいて前記転送先装置を特定するための第2の規則情報を記憶する第2の規則情報記憶手段と、
前記第1の規則情報記憶手段に記憶されている情報量が予め設定された第1の閾値量よりも大きい場合において、前記第2の属性群を構成する各属性に対する属性情報のみに基づいて前記転送先装置を特定するための情報が第1の規則情報として当該第1の規則情報記憶手段に記憶されているとき、当該第1の規則情報を前記第2の規則情報として前記第2の規則情報記憶手段に記憶させるとともに、当該第1の規則情報を当該第1の規則情報記憶手段から消去する移行処理を行う転送制御手段と、
を備える中継装置。 - 請求項1に記載の中継装置であって、
前記受信されたデータに含まれる属性情報と、前記第1の規則情報記憶手段に記憶されている第1の規則情報と、に基づいて前記転送先装置を特定し、当該特定された転送先装置へ当該データを送信する第1の転送処理実行手段と、
前記受信されたデータに含まれる属性情報と、前記第2の規則情報記憶手段に記憶されている第2の規則情報と、に基づいて前記転送先装置を特定し、当該特定された転送先装置へ当該データを送信する第2の転送処理実行手段と、
を備える中継装置。 - 請求項2に記載の中継装置であって、
前記第1の規則情報は、前記第1の属性群に対する第1の属性条件と、前記転送先装置を識別するための転送先識別情報と、を含み、
前記第2の規則情報は、前記第2の属性群に対する第2の属性条件と、前記転送先装置を識別するための転送先識別情報と、を含み、
前記第1の転送処理実行手段は、前記記憶されている第1の規則情報に含まれる第1の属性条件のいずれかを前記受信されたデータに含まれる属性情報が満たすとき、当該第1の属性条件を含む第1の規則情報に含まれる転送先識別情報により識別される転送先装置へ、当該データを送信するように構成され、
前記第2の転送処理実行手段は、前記記憶されている第2の規則情報に含まれる第2の属性条件のいずれかを前記受信されたデータに含まれる属性情報が満たすとき、当該第2の属性条件を含む第2の規則情報に含まれる転送先識別情報により識別される転送先装置へ、当該データを送信するように構成され、
前記転送制御手段は、前記第1の規則情報記憶手段に記憶されている情報量が前記第1の閾値量よりも大きい場合において、前記第2の属性群のみに対する条件を前記第1の属性条件として含む前記第1の規則情報が当該第1の規則情報記憶手段に記憶されているとき、当該第1の規則情報が含む第1の属性条件を第2の属性条件として含み且つ当該第1の規則情報が含む転送先識別情報を含む第2の規則情報を前記第2の規則情報記憶手段に記憶させるとともに、当該第1の規則情報を当該第1の規則情報記憶手段から消去する前記移行処理を行うように構成された中継装置。 - 請求項3に記載の中継装置であって、
前記第1の属性条件は、前記第1の属性群を構成する各属性に対する前記属性情報の範囲を表す第1の範囲特定情報を含み、前記第1の属性群を構成する各属性に対して、前記データに含まれる属性情報が当該第1の範囲特定情報が表す範囲に含まれる、という条件であり、
前記第2の属性条件は、前記第2の属性群を構成する各属性に対する前記属性情報の範囲を表す第2の範囲特定情報を含み、前記第2の属性群を構成する各属性に対して、前記データに含まれる属性情報が当該第2の範囲特定情報が表す範囲に含まれる、という条件であり、
前記転送制御手段は、前記第1の規則情報記憶手段に記憶されている情報量が前記第1の閾値量よりも大きい場合において、前記第1の属性群を構成する属性のうちの、前記第2の属性群を構成する属性以外の各属性に対して、任意の属性情報を含む前記範囲を定める前記第1の範囲特定情報を含む第1の規則情報が当該第1の規則情報記憶手段に記憶されているとき、当該第1の範囲特定情報のうちの前記第2の属性群を構成する各属性に対して前記範囲を定める部分を含む前記第2の範囲特定情報を含む第2の属性条件と、当該第1の規則情報が含む転送先識別情報と、を含む第2の規則情報を前記第2の規則情報記憶手段に記憶させるとともに、当該第1の規則情報を当該第1の規則情報記憶手段から消去する前記移行処理を行うように構成された中継装置。 - 請求項4に記載の中継装置であって、
前記移行処理が行われる場合、当該移行処理において消去される前記第1の規則情報に含まれる第1の範囲特定情報の一部を構成し、且つ、前記第1の属性群を構成する属性のうちの前記第2の属性群を構成する属性以外の各属性に対して前記範囲を定める部分を差分情報として記憶する差分情報記憶手段を備え、
前記転送制御手段は、前記第1の規則情報記憶手段に記憶されている情報量が予め設定された第2の閾値量よりも小さい場合において、前記差分情報が記憶されているとき、当該差分情報と、前記移行処理において記憶させられた第2の規則情報と、に基づいて、当該移行処理において消去された前記第1の規則情報を生成し、当該生成した第1の規則情報を前記第1の規則情報記憶手段に記憶させるとともに、当該第2の規則情報を当該第2の規則情報記憶手段から消去する復元処理を行うように構成された中継装置。 - 請求項1乃至請求項5のいずれか一項に記載の中継装置であって、
前記第1の規則情報記憶手段は、当該中継装置が前記第1の規則情報を受け付けた場合、当該受け付けた第1の規則情報を記憶するように構成された中継装置。 - 請求項3乃至請求項6のいずれか一項に記載の中継装置であって、
前記受信されたデータに含まれる属性情報が前記記憶されている第1の規則情報に含まれる第1の属性条件のいずれかを満たす場合、前記第1の転送処理実行手段に当該データを送信させ、一方、当該受信されたデータに含まれる属性情報が前記記憶されている第1の規則情報に含まれる第1の属性条件のいずれも満たさない場合において、当該受信されたデータに含まれる属性情報が前記記憶されている第2の規則情報に含まれる第2の属性条件のいずれかを満たすとき、前記第2の転送処理実行手段に当該データを送信させるように構成された中継装置。 - 請求項3乃至請求項7のいずれか一項に記載の中継装置であって、
前記外部装置を当該中継装置に接続するためのポートを複数備え、
前記転送先識別情報は、前記ポートを識別するためのポート識別情報である中継装置。 - 請求項1乃至請求項8のいずれか一項に記載の中継装置であって、
前記複数の属性は、前記データの送信元のIP(Internet Protocol)アドレス、前記データの送信元のMAC(Media Access Control)アドレス、前記データの送信先のIPアドレス、及び、前記データの送信先のMACアドレスのうちの少なくとも1つを含む中継装置。 - 複数の外部装置のそれぞれと接続されるとともに、当該複数の外部装置の1つから受信したデータを、当該複数の外部装置の他の1つである転送先装置へ送信する中継装置に適用され、
前記データは、当該データが有する複数の属性のそれぞれを表す属性情報を含み、
前記中継装置は、
前記複数の属性からなる第1の属性群を構成する各属性に対する属性情報に基づいて前記転送先装置を特定するための第1の規則情報を記憶する第1の規則情報記憶手段と、
前記複数の属性の一部からなる第2の属性群を構成する各属性に対する属性情報に基づいて前記転送先装置を特定するための第2の規則情報を記憶する第2の規則情報記憶手段と、
を備え、
前記第1の規則情報記憶手段に記憶されている情報量が予め設定された第1の閾値量よりも大きい場合において、前記第2の属性群を構成する各属性に対する属性情報のみに基づいて前記転送先装置を特定するための情報が第1の規則情報として当該第1の規則情報記憶手段に記憶されているとき、当該第1の規則情報を前記第2の規則情報として前記第2の規則情報記憶手段に記憶させるとともに、当該第1の規則情報を当該第1の規則情報記憶手段から消去する移行処理を行う、中継方法。 - 請求項10に記載の中継方法であって、
前記受信されたデータに含まれる属性情報と、前記第1の規則情報記憶手段に記憶されている第1の規則情報と、に基づいて前記転送先装置を特定し、当該特定された転送先装置へ当該データを送信し、
前記受信されたデータに含まれる属性情報と、前記第2の規則情報記憶手段に記憶されている第2の規則情報と、に基づいて前記転送先装置を特定し、当該特定された転送先装置へ当該データを送信する、中継方法。 - 複数の外部装置のそれぞれと接続されるとともに、当該複数の外部装置の1つから受信したデータを、当該複数の外部装置の他の1つである転送先装置へ送信する中継装置が実行するプログラムであって、
前記データは、当該データが有する複数の属性のそれぞれを表す属性情報を含み、
前記中継装置は、
前記複数の属性からなる第1の属性群を構成する各属性に対する属性情報に基づいて前記転送先装置を特定するための第1の規則情報を記憶する第1の規則情報記憶手段と、
前記複数の属性の一部からなる第2の属性群を構成する各属性に対する属性情報に基づいて前記転送先装置を特定するための第2の規則情報を記憶する第2の規則情報記憶手段と、
を備え、
前記中継装置に、
前記第1の規則情報記憶手段に記憶されている情報量が予め設定された第1の閾値量よりも大きい場合において、前記第2の属性群を構成する各属性に対する属性情報のみに基づいて前記転送先装置を特定するための情報が第1の規則情報として当該第1の規則情報記憶手段に記憶されているとき、当該第1の規則情報を前記第2の規則情報として前記第2の規則情報記憶手段に記憶させるとともに、当該第1の規則情報を当該第1の規則情報記憶手段から消去する移行処理を行う転送制御手段を実現させるためのプログラム。 - 請求項12に記載のプログラムであって、
前記中継装置に、
前記受信されたデータに含まれる属性情報と、前記第1の規則情報記憶手段に記憶されている第1の規則情報と、に基づいて前記転送先装置を特定し、当該特定された転送先装置へ当該データを送信する第1の転送処理実行手段と、
前記受信されたデータに含まれる属性情報と、前記第2の規則情報記憶手段に記憶されている第2の規則情報と、に基づいて前記転送先装置を特定し、当該特定された転送先装置へ当該データを送信する第2の転送処理実行手段と、
を実現させるためのプログラム。
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2010
- 2010-08-25 CA CA2781932A patent/CA2781932A1/en not_active Abandoned
- 2010-08-25 US US13/509,270 patent/US20120233431A1/en not_active Abandoned
- 2010-08-25 EP EP10832779.2A patent/EP2506504A4/en not_active Withdrawn
- 2010-08-25 JP JP2011543077A patent/JP5187448B2/ja active Active
- 2010-08-25 CN CN201080053120.8A patent/CN102763379B/zh not_active Expired - Fee Related
- 2010-08-25 WO PCT/JP2010/005215 patent/WO2011064923A1/ja active Application Filing
- 2010-08-25 KR KR1020127013766A patent/KR101358492B1/ko active IP Right Grant
- 2010-08-25 RU RU2012121831/08A patent/RU2510581C2/ru active IP Right Revival
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Also Published As
Publication number | Publication date |
---|---|
CN102763379A (zh) | 2012-10-31 |
JPWO2011064923A1 (ja) | 2013-04-11 |
KR101358492B1 (ko) | 2014-03-07 |
JP5187448B2 (ja) | 2013-04-24 |
KR20120087973A (ko) | 2012-08-07 |
US20120233431A1 (en) | 2012-09-13 |
CN102763379B (zh) | 2014-12-24 |
RU2012121831A (ru) | 2014-01-10 |
RU2510581C2 (ru) | 2014-03-27 |
EP2506504A1 (en) | 2012-10-03 |
CA2781932A1 (en) | 2011-06-03 |
EP2506504A4 (en) | 2013-11-13 |
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