WO2022162847A1 - 設定装置、設定方法及び設定プログラム - Google Patents
設定装置、設定方法及び設定プログラム Download PDFInfo
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- WO2022162847A1 WO2022162847A1 PCT/JP2021/003118 JP2021003118W WO2022162847A1 WO 2022162847 A1 WO2022162847 A1 WO 2022162847A1 JP 2021003118 W JP2021003118 W JP 2021003118W WO 2022162847 A1 WO2022162847 A1 WO 2022162847A1
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- 238000000034 method Methods 0.000 title claims description 40
- 238000012546 transfer Methods 0.000 claims abstract description 119
- 238000005516 engineering process Methods 0.000 claims description 13
- 238000012545 processing Methods 0.000 description 42
- 238000010586 diagram Methods 0.000 description 36
- 230000004308 accommodation Effects 0.000 description 7
- 238000013508 migration Methods 0.000 description 7
- 230000005012 migration Effects 0.000 description 7
- 238000004891 communication Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000000969 carrier Substances 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/66—Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
Definitions
- the present invention relates to a setting device, a setting method, and a setting program.
- Multicast is used for purposes such as real-time video distribution over the Internet. Since multicasting is part of pay broadcasting services for telecommunications carriers, it is necessary to limit the channels that can be viewed according to the user's contract status.
- Patent Document 1 a technology that has an L2 filter function in addition to the transfer device has been proposed (see Patent Document 1, for example). This can be seen as a method of separating the filter conditions by L2/L3 and entrusting the L2 filter condition to an external device to reduce the number of filter settings per device.
- multicast since multicast is classified as an L3 forwarding technology, it cannot be separated at L2/L3.
- another forwarding device with a filter function since another forwarding device with a filter function is placed between the terminal and the router, the facility cost increases, and both the forwarding device and the device with the filter function are required to operate. Work increases.
- the devices targeted for filter setting for the same service (multicast) purpose are distributed, the number of setting points increases when a new user is acquired or when a user withdraws from the membership, resulting in an increase in operational effort.
- the present invention has been made in view of the above, and it is an object of the present invention to provide a setting device, a setting method, and a setting program that can reduce the total number of filters set in the transfer device in the L3 transfer technology.
- the setting device includes a first table in which information on each shared filter is recorded, and a transfer device to which each shared filter is applied. and a recording unit having a second table, and in the L3 transfer technology, based on an instruction from the upper server, referring to the first table and the second table, creating a new shared filter or modifying an existing shared filter
- the present invention is characterized by having a creation unit that determines diversion, and a setting unit that creates a config based on the determination result of the creation unit and sets a shared filter that is shared between a plurality of IFs in the transfer device.
- the total number of filters set in the transfer device can be reduced in the L3 transfer technology.
- FIG. 1 is a diagram showing an overview of filter settings according to the first embodiment.
- FIG. 2 is a diagram showing a configuration example.
- FIG. 3 is a diagram showing a configuration example.
- FIG. 4 is a diagram schematically showing an example of a network system according to Embodiment 1.
- FIG. 5 is a diagram showing an example of the data structure of the common filter information table shown in FIG. 4.
- FIG. 6 is a diagram showing an example of the data configuration of the common filter application destination table shown in FIG.
- FIG. 7-1 is a diagram showing an example of the shared filter information table shown in FIG.
- FIG. 7-2 is a diagram showing an example of the common filter destination table shown in FIG.
- FIG. 8-1 is a diagram showing an example of the shared filter information table shown in FIG. FIG.
- FIG. 8-2 is a diagram showing an example of the common filter destination table shown in FIG.
- FIG. 9-1 is a diagram showing an example of the common filter information table shown in FIG.
- FIG. 9-2 is a diagram showing an example of the common filter destination table shown in FIG. 10 is a flow chart showing a processing procedure of filter creation processing executed by the shared filter creation unit shown in FIG. 4.
- FIG. 11 is a sequence diagram illustrating a processing procedure of filter setting processing according to Embodiment 1.
- FIG. FIG. 12 is a sequence diagram showing another processing procedure of filter setting processing according to the first embodiment.
- 13 is a sequence diagram illustrating another processing procedure of the filter setting processing according to Embodiment 1.
- FIG. FIG. 14 is a diagram for explaining preconditions in the second embodiment.
- FIG. 15 is a diagram schematically showing an example of a network system according to Embodiment 2.
- FIG. FIG. 16 is a diagram showing an example of the data structure of the transfer device and MC source association table shown in FIG.
- FIG. 17 is a flow chart showing a processing procedure of filter creation processing executed by the shared filter creation unit.
- FIG. 18 is a sequence diagram illustrating a processing procedure of filter setting processing according to the second embodiment.
- FIG. 19 is a diagram illustrating an example of a computer that implements a filter setting device by executing a program.
- FIG. 1 is a diagram showing an overview of filter settings in Embodiment 1.
- the frequently used source address and group address are generally determined in many cases. Therefore, it is conceivable that some of the viewing restriction filters currently set for each user can be shared.
- a filter with contents corresponding to the user's viewing contract etc. is created for the multicast filter ((2) in FIG. 1), and this filter is applied to the user VLAN (Virtual LAN).
- VLAN Virtual LAN
- the user receives information on the transfer device accommodating the user (device IP address, etc.), the physical port identification number of this transfer device accommodating the user, and the VLAN assigned to the user on this physical port. It can be identified by the three information of ID, and the combination of such information is called "user identifier".
- the interface (IF) that accommodates the user is called the "user IF".
- a user's subscribing to a video distribution service using multicast means inputting multicast settings (multicast listener discovery (MLD: Multicast Listener Discovery), etc.) to the user IF.
- MLD Multicast Listener Discovery
- FIG. 2 is a diagram showing a configuration example.
- FIG. 2 shows a filter named "Filter1".
- the first line in FIG. 2 indicates that communication with a source address of "any” and a group address of "aaa” is permitted.
- the second line in FIG. 2 indicates that communication with a source address of "CCC” and a group address of "ccc” is permitted. Otherwise it is automatically "deny”.
- FIG. 3 is a diagram showing a configuration example.
- the user IF is named "Port-channel1.1", and the "(omitted)" part includes the VLAN settings and the like of this IF. "Filter1" is applied to this user IF.
- FIG. 4 is a diagram schematically showing an example of a network system according to Embodiment 1.
- the network system according to the first embodiment has a host server 10, a filter setting device 20, a transfer device 30, and a device information database (DB) 50.
- DB device information database
- the upper server 10 is an operating device for upper Ops or maintenance personnel, and inputs various parameters for filter setting to the filter setting device 20 to instruct filter setting.
- the filter setting device 20 sets a shared filter shared between multiple IFs in the transfer device. Based on an instruction from the host server 10, the filter setting device 20 determines whether to create a new shared filter or to reuse an existing shared filter, and sets a shared filter to be shared among multiple IFs in the transfer device 30. FIG.
- the transfer device 30 is an IP terminal device that accommodates the user terminal 40 .
- the transfer device 30 applies the filter set by the filter setting device 20 to the user IF.
- the user terminal 40 is a terminal device operated by a user who wants to use the multicast distribution service.
- the device information DB 50 is a DB prepared by a telecommunications carrier to grasp the status of communication equipment within its own network.
- the filter setting device 20 for example, a predetermined program is read into a computer or the like including a ROM (Read Only Memory), a RAM (Random Access Memory), a CPU (Central Processing Unit), etc., and the CPU executes the predetermined program. It is realized by The filter setting device 20 also has a communication interface for transmitting and receiving various information to and from another device connected via a network or the like.
- the filter setting device 20 has a NIC (Network Interface Card) or the like, and communicates with other devices via an electric communication line such as a LAN (Local Area Network) or the Internet.
- NIC Network Interface Card
- the filter setting device 20 has a shared filter DB 21 (storage unit), a shared filter creating unit 22 (creating unit), and a configuration input unit 23 (setting unit).
- the shared filter DB 21 holds information about created shared filters, and also holds information indicating which shared filter is applied to which user.
- the shared filter DB 21 has a shared filter information table 211 (first table) and a shared filter application destination table 212 (second table).
- FIG. 5 is a diagram showing an example of the data configuration of the shared filter information table 211 shown in FIG. As shown in FIG. 5, the shared filter information table 211 records the filter name, source, and group of the created shared filter in association with each other.
- FIG. 6 is a diagram showing an example of the data configuration of the shared filter destination table 212 shown in FIG. As shown in FIG. 6, the shared filter application destination table 212 records the filter name-applied transfer device and the applied user IF of the created shared filter in association with each other.
- the shared filter creating unit 22 refers to the shared filter information table 211 and the shared filter application destination table 212 based on the instruction from the upper server 10 to create a new shared filter or update an existing shared filter. Judge diversion.
- the shared filter information corresponding to the instruction from the upper server 10 is in the shared filter information table 211 and the transfer device 30 accommodating the terminal of the user whose addition is instructed is in the shared filter application destination table 212 will be described. do.
- the shared filter creation unit 22 determines to share the shared filter corresponding to the instruction from the host server 10 and the shared filter of another IF of the transfer device 30 accommodating the user terminal 40 .
- the shared filter creating unit 22 determines to add the shared filter corresponding to the instruction from the upper server 10 to the transfer device 30 accommodating the user terminal 40 .
- the shared filter creating unit 22 adds the transfer device 30 accommodating the user terminal 40 to the shared filter application destination table 212 as a destination to which the shared filter corresponding to the instruction from the upper server 10 is applied.
- the shared filter creating unit 22 newly creates a shared filter corresponding to the instruction from the upper server 10, and sends the created shared filter to the transfer device 30 that accommodates the user terminal 40 of the user whose addition was instructed. Determine to apply.
- the shared filter creating unit 22 records the created shared filter information and its application destination in the shared filter information table 211 and the shared filter application destination table 212 .
- the config input unit 23 generates a config based on the determination result of the shared filter creation unit 22, and sets a filter shared between multiple IFs in the transfer device 30.
- the configuration input unit 23 receives the filter conditions determined by the common filter creation unit 22 and generates a configuration that can be input to the transfer device under the configuration.
- FIGS. 7-1 to 9-2 are examples when the input parameters from the host server 10 have the following contents.
- the port number of the destination user IF is a value derived from the input user identifier.
- State 1 is a state in which the shared filter information table 211 and the shared filter application destination table 212 contain information on the shared filter whose setting is input.
- State 1 is a state in which a shared filter with the same content has been created in the past and a user IF to which the same shared filter is applied already exists in the transfer device 30 .
- State 1 is, for example, row R1 (see FIG. 7-1) of shared filter information table 211-1 and row R2 (see FIG. 7-2) of shared filter application table 212-1. also has the information of 'Filter1' that has been set.
- State 2 is a state in which only the shared filter information table 211 has information on the shared filters whose settings have been entered.
- State 2 is a state in which a shared filter with the same content has been created in the past, but there is no other user IF applied to the transfer device 30 that is the target of setting this time.
- the row R3 (see FIG. 8-1) of the common filter information table 211-1 has information of "Filter1”
- the common filter application destination table 212-1 (see FIG. 8-2) has This is the case where there is no information for "Filter1".
- State 3 is a state in which only the common filter application destination table 212 has information on filters whose settings have been entered. However, since the shared filter is applied to the forwarding device 30 after it is created, state 3 is not considered because it is an improbable state.
- State 4 is a state in which neither the shared filter information table 211 nor the shared filter destination table 212 contains information on the shared filter whose settings have been input.
- State 4 is a state in which a similar common filter has not been created in the past or has been deleted. State 4 is, for example, when neither the shared filter information table 211-3 (see FIG. 9-1) nor the shared filter destination table 212-3 (see FIG. 9-2) has information of "Filter1". be.
- FIG. 10 is a flow chart showing a processing procedure of filter creation processing executed by the shared filter creation unit 22 shown in FIG. Note that the following processing is executed when a new shared filter is created and applied to a user IF for which no shared filter has been set. The same is done when changing to a shared filter created in or already existing).
- the shared filter creation unit 22 receives parameters indicating shared filter setting information from the upper server 10 (step S1), and starts filter creation processing.
- the parameters are filter conditions, specifically user identifiers, source addresses, group addresses, etc. in the case of multicast.
- the shared filter creation unit 22 refers to the shared filter information table 211 and determines whether or not there is a filter in the shared filter information table 211 that satisfies the conditions after the parameters are reflected (step S2).
- step S2 If the shared filter information table 211 does not have a filter that satisfies the conditions after the parameters have been reflected (step S2: No), the shared filter creation unit 22 creates a new shared filter corresponding to the parameters received from the host server 10. (Step S3). Then, the shared filter creating unit 22 records the created shared filter information in the shared filter information table 211 (step S4).
- the shared filter creating unit 22 creates a destination device and a user interface according to the user identifier. is specified, and the accommodation position of the user terminal is selected (step S5).
- the shared filter creating unit 22 determines whether the filter name and the destination transfer device already exist in the shared filter destination table 212 (step S6).
- step S6 If the filter name and destination transfer device do not exist in the shared filter application destination table 212 (step S6: No), the shared filter creating unit 22 sets the shared filter to the destination transfer device 30 (step S7). . Then, the shared filter creating unit 22 records the set shared filter and the destination transfer device 30 in the shared filter destination table 212 (step S8).
- step S6 If the filter name and destination transfer device exist in the common filter application destination table 212 (step S6: Yes), or after step S8, the common filter creation unit 22 outputs the determination result to the configuration input unit 23. (step S9).
- the configuration input unit 23 receives the filter conditions determined by the shared filter creation unit 22, generates a configuration that can be input to the transfer device under its control, and sets a filter shared between multiple IFs in the transfer device 30. do.
- the shared filter creation unit 22 determines whether or not the shared filter is newly applied to the target user IF (step S10). If the shared filter is newly applied to the target user IF (step S10: Yes), there is no shared filter that has been applied to this user IF in the past, and updating the shared filter DB 21 is unnecessary. The creating unit 22 terminates the process.
- step S10 If the shared filter is not newly applied to the target user IF (step S10: No), the shared filter creating unit 22 updates the shared filter application destination table 212 (step S11). Then, the shared filter creating unit 22 determines whether or not the shared filter information table 211 includes a filter name that does not appear in the shared filter application destination table 212 (step S12).
- step S12: Yes If there is a filter name that does not appear in the shared filter application destination table 212 in the shared filter information table 211 (step S12: Yes), the shared filter that has not been applied remains recorded. The corresponding filter information is deleted from the information table 211 (step S13), and the shared filter DB 21 is updated. On the other hand, if there is no filter name that does not appear in the shared filter application destination table 212 in the shared filter information table 211 (step S12: No), the shared filter DB 21 contains information on the shared filter that is actually applied to the transfer device 30. Since it is properly recorded, the shared filter creating unit 22 terminates the process.
- FIG. 11 is a sequence diagram illustrating a processing procedure of filter setting processing according to Embodiment 1.
- FIG. 11 is a sequence diagram illustrating a processing procedure of filter setting processing according to Embodiment 1.
- the host server 10 transmits the parameters of the user identifier, source address, and group address, which are setting information for the MC new user, to the filter setting device 20 (step S21).
- the shared filter creating unit 22 collates the input information with the shared filter information table 211 of the shared filter DB.
- the shared filter creating unit 22 selects the device to which the shared filter is applied and the user IF according to the user identifier. By specifying, an accommodation position is selected (step S23).
- the common filter creating unit 22 checks whether or not an existing common filter has been set to the device to be set. In the case of state 1, the common filter application destination table has already recorded the filter name and the application destination device (step S24).
- the shared filter creation unit 22 inputs information on the shared filter to be applied and an instruction to apply the shared filter to the user IF to the configuration input unit 23 (step S25).
- the configuration input unit 23 generates a configuration according to the information input by the shared filter creation unit 22 (step S26), and inputs a shared filter application command to the user IF to the transfer device 30 (step S27).
- the transfer device 30 sets the common filter to the user IF to which it is applied.
- the shared filter creating unit 22 makes the contents of the shared filter DB 21 current by executing steps S10 to S13 in FIG. 10 (step S28).
- FIG. 12 is a sequence diagram showing another processing procedure of filter setting processing according to the first embodiment.
- Steps S31 and S32 in FIG. 12 are the same processing as steps S21 and S22 in FIG. In the case of state 2, since there is an existing shared filter that meets the conditions after parameter reflection in the shared filter information table (step S32), the shared filter creating unit 22 selects an accommodation position (step S33).
- the shared filter creation unit 22 checks whether this existing shared filter has been set in the device to be set. In the case of state 2, the shared filter destination device is not recorded in the shared filter destination table 212 (step S34). Therefore, the shared filter creation unit 22 records the shared filter to be set, the transfer device 30 and the user IF to which it is applied in the shared filter application destination table 212 (step S35).
- the shared filter creation unit 22 inputs information on the shared filter to be applied and an instruction to apply the shared filter to the user IF to the configuration input unit 23 (step S36).
- the configuration input unit 23 generates a configuration according to the input information from the shared filter creation unit 22 (step S37), and inputs the shared filter information and the shared filter application command to the user interface to the transfer device 30 (step S37). S38, S39).
- the transfer device 30 sets the common filter to the user IF to which it is applied.
- step S40 is the same process as step S28 in FIG.
- FIG. 13 is a sequence diagram illustrating another processing procedure of the filter setting processing according to Embodiment 1.
- FIG. 13 is a sequence diagram illustrating another processing procedure of the filter setting processing according to Embodiment 1.
- Step S41 in FIG. 13 is the same processing as step S21 in FIG.
- the common filter creating unit 22 creates a new common filter and uses the created common filter. , is registered in the shared filter information table 211 of the shared filter DB 21 (step S43).
- the shared filter creation unit 22 selects the accommodation position (step S44). In the case of state 4, since the shared filter is newly created, the application destination device is not recorded in the shared filter destination table 212 (step S45). Therefore, the shared filter creating unit 22 records the shared filter to be set, the transfer device 30 and the user IF to which it is applied in the shared filter application destination table 212 (step S46). Steps S47 to S51 are the same processes as steps S36 to S40 shown in FIG.
- the filter setting device 20 includes the shared filter information table 211 in which information of each shared filter is recorded, and the shared filter application destination table in which the transfer device to which each shared filter is applied is recorded. 212. Then, in the L3 transfer technology, the filter setting device 20 refers to the shared filter information table 211 and the shared filter application destination table based on the instruction from the upper server 10 to create a new shared filter or update an existing shared filter. Diversion is determined, a config is generated based on the determination result, and a filter shared between multiple IFs is set in the transfer device 30 .
- the filter setting device 20 since filters are shared between multiple IFs of the transfer device 30, the number of filters can be reduced.
- the filter setting device 20 refers to the shared filter information table 211 and the shared filter application destination table to automatically add, change, and delete shared filters, so that it is possible to reduce the operation.
- FIG. 14 is a diagram explaining the preconditions in the second embodiment. As shown in FIG. 14, a plurality of distribution servers for the same content may be prepared for the purpose of load distribution, etc., and share distribution destinations.
- edge A For example, assume that the user terminal originally communicates with the outside via edge A.
- edge A when edge A must be temporarily stopped for reasons such as maintenance or failure, the user terminals accommodated in edge A may be reaccommodated to another edge in order to continue service.
- the content distribution server A and the content distribution server B are operated by the same operator, and both distribute the same content.
- the content distribution server A is used for the edge A
- the content distribution server B is used for the edge B, thereby distributing the load.
- the source address of the distribution server (content server) is specified and the config is created in order to receive the multicast of the same distributor in the transfer device 30 of the migration destination. This makes it possible to cope with changes in the transfer device 30 that accommodates the user terminal 40 .
- FIG. 15 is a diagram schematically showing an example of a network system according to the second embodiment.
- the network system according to the second embodiment has a filter setting device 220 instead of the filter setting device 20 shown in FIG.
- the filter setting device 220 has a table in the shared filter DB 21 that records the relationship between the transfer device 30 and the source address of the distribution server, and based on the information of the source address of the distribution server included in the input, the destination transfer device After specifying the source address to receive the same broadcaster's multicast in , create the config. As a result, even when the transfer device 30 accommodating the user terminal 40 is changed, it is possible to receive the multicast from the distribution server.
- the filter setting device 220 has a shared filter DB 21, a shared filter creation unit 222 (creation unit), and a configuration input unit 223 (setting unit).
- the shared filter DB 21 further has a transfer device and MC source association table 213 (third table).
- the transfer device/MC source association table 213 stores, for each transfer device 30, the relationship between the transfer device 30 and the source address of the distribution server that distributes the MC in association with each other.
- FIG. 16 is a diagram showing an example of the data configuration of the transfer device and MC source association table 213 shown in FIG.
- the transfer device/MC source association table 213 records transfer device identification information, distributor (distribution server) identification information, and distribution server source addresses in association with each other. It is assumed that the contents of the transfer device/MC source association table 213 are registered in advance by a maintenance person or the like.
- the common filter creation unit 222 has the same function as the common filter creation unit 22. Then, based on the source address information included in the instruction from the upper server 10, the common filter creation unit 222 refers to the transfer device/MC source association table 213, and determines the distribution corresponding to the source address included in the instruction. The source address of the server is specified, and the source address of the specified distribution server is output to the configuration input unit 223 . Based on the source address information included in the instruction from the host server 10, the shared filter creating unit 222 determines the source address of the distribution server for the user terminal 40 to receive the multicast of the same distributor in the destination transfer device 30. After specifying, the information is output to the configuration input unit 223 .
- the config input unit 223 generates a config based on the information output from the shared filter creation unit 222 and sets a shared filter in the destination transfer device 30 .
- the config input unit 223 includes the source address of the distribution server specified for the user terminal 40 to receive the multicast of the same distributor in the transfer device 30 of the transfer destination in the configuration. 30 can also appropriately set a shared filter to the user IF corresponding to the user terminal 40 to which the shared filter is applied. Further, if there is an unused shared filter in the source transfer device 30, the configuration input unit 223 instructs the source transfer device 30 to delete the unused shared filter.
- FIG. 17 is a flow chart showing a processing procedure of filter creation processing executed by the common filter creation unit 222 shown in FIG.
- the shared filter creation unit 22 receives parameters indicating shared filter setting information from the upper server 10 (step S201), and starts filter creation processing.
- the parameters are filter conditions (user identifier, source address for multicast, group address, etc.), source transfer device 30 and user IF information of user terminal 40, transfer destination transfer device 30 and user IF information of user terminal 40, and the like. be.
- Steps S202 to S204 shown in FIG. 17 are the same processes as steps S2 to S4 shown in FIG.
- the shared filter creation unit 222 selects an accommodation location based on the filter conditions, the source transfer device 30 and user IF information of the user terminal 40, and the transfer destination transfer device 30 and user IF information of the user terminal 40, and Then, the source address of the content distribution server is selected (step S205).
- Steps S206 to S213 shown in FIG. 17 are the same as steps S6 to S13 shown in FIG.
- FIG. 18 is a sequence diagram illustrating a processing procedure of filter setting processing according to the second embodiment.
- a filter having the same conditions as the filter to be set in the transfer device 30-2 has not been created in the past and has not been applied to the transfer device 30-2, that is, state 4.
- (1) the case where the user who is using the MC viewing service is transferred from the transfer device 30-1 to the transfer device 30-2 is shown. It is assumed that the shared filter creation unit 222 has already completed the accommodation change between the transfer devices 30-1 and 30-2 of the user terminals.
- the host server 10 includes user identifiers, source addresses and group addresses, which are setting information for MC new users, identification information of source/destination transfer devices 30, and source/destination transfer device 30.
- a parameter including user interface information is transmitted to the filter setting device 220 (step S221).
- the shared filter creating unit 222 collates the input information with the shared filter information table 211 of the shared filter DB. Since there is no existing shared filter that satisfies the conditions after parameter reflection in the shared filter information table (step S222), the shared filter creating unit 222 creates a new shared filter and stores the created shared filter in the shared filter DB 21. It is registered in the shared filter information table 211 (step S223). Subsequently, the shared filter creating unit 222 refers to the transfer device 30 and MC source association table to specify a valid source address at the migration destination (step S224).
- the shared filter creation unit 222 sets the shared filter to be set and the transfer device 30 and user IF to which the shared filter is applied. It is recorded in the destination table 212 (step S226).
- the shared filter creating unit 222 inputs the information of the shared filter to be applied and the instruction to apply the shared filter to the user IF (including the source address of the distribution server) to the configuration input unit 223 (step S227).
- the configuration input unit 223 generates a configuration according to the information input by the common filter creation unit 222 (step S228), and sends the common filter application command to the user interface and the command to the migration destination user interface to the migration destination transfer device 30-2.
- common filter application instruction is input (steps S229 and S230).
- the configuration input unit 2232 instructs the source transfer device 30-1 to delete the unused shared filter information from the source transfer device 30-1 (step S231).
- the transfer device 30-1 instructs the transfer device 30-1 in step S231 to Remove filters.
- the shared filter creating unit 222 updates the contents of the shared filter DB 21 by executing steps S10 to S13 in FIG. 10 (step S232). By this processing, if there is a shared filter that is no longer set in any of the transfer devices 30, the retained information is made current, such as by deleting it from the shared filter DB 21.
- FIG. 10 illustrates the shared filter creating unit 222 updates the contents of the shared filter DB 21 by executing steps S10 to S13 in FIG. 10 (step S232).
- the filter setting device 220 has a table in the shared filter DB 21 that records the relationship between the transfer device 30 and the source address of the distribution server. Then, based on the information of the source address of the distribution server included in the instruction from the upper server 10, the filter setting device 220 sets the source address of the distribution server so that the destination transfer device 30 also receives the multicast from the same distribution server. After identifying it, create a configuration for applying the common filter.
- the common filter can be appropriately set in the transfer device 30 of the migration destination. Multicast from the server can be received smoothly.
- Each component of the filter setting devices 20 and 220 is functionally conceptual and does not necessarily need to be physically configured as shown. That is, the specific forms of distribution and integration of the functions of the filter setting devices 20 and 220 are not limited to those shown in the drawings, and all or part of them can be functionally arranged in arbitrary units according to various loads and usage conditions. Alternatively, it can be physically distributed or integrated.
- each process performed in the filter setting devices 20 and 220 may be realized entirely or in arbitrary part by a CPU, a GPU (Graphics Processing Unit), and a program that is analyzed and executed by the CPU and GPU. . Further, each process performed in the filter setting device 20 may be realized as hardware by wired logic.
- FIG. 19 is a diagram showing an example of a computer that implements the filter setting devices 20 and 220 by executing a program.
- the computer 1000 has a memory 1010 and a CPU 1020, for example.
- Computer 1000 also has hard disk drive interface 1030 , disk drive interface 1040 , serial port interface 1050 , video adapter 1060 and network interface 1070 . These units are connected by a bus 1080 .
- the memory 1010 includes a ROM 1011 and a RAM 1012.
- the ROM 1011 stores a boot program such as BIOS (Basic Input Output System).
- BIOS Basic Input Output System
- Hard disk drive interface 1030 is connected to hard disk drive 1090 .
- a disk drive interface 1040 is connected to the disk drive 1100 .
- a removable storage medium such as a magnetic disk or optical disk is inserted into the disk drive 1100 .
- Serial port interface 1050 is connected to mouse 1110 and keyboard 1120, for example.
- Video adapter 1060 is connected to display 1130, for example.
- the hard disk drive 1090 stores an OS (Operating System) 1091, application programs 1092, program modules 1093, and program data 1094, for example. That is, a program that defines each process of the filter setting devices 20 and 220 is implemented as a program module 1093 in which code executable by the computer 1000 is described. Program modules 1093 are stored, for example, on hard disk drive 1090 .
- the hard disk drive 1090 stores a program module 1093 for executing processing similar to the functional configuration of the filter setting devices 20 and 220 .
- the hard disk drive 1090 may be replaced by an SSD (Solid State Drive).
- the setting data used in the processing of the above-described embodiment is stored as program data 1094 in the memory 1010 or the hard disk drive 1090, for example. Then, the CPU 1020 reads out the program module 1093 and the program data 1094 stored in the memory 1010 and the hard disk drive 1090 to the RAM 1012 as necessary and executes them.
- the program modules 1093 and program data 1094 are not limited to being stored in the hard disk drive 1090, but may be stored in a removable storage medium, for example, and read by the CPU 1020 via the disk drive 1100 or the like. Alternatively, the program modules 1093 and program data 1094 may be stored in another computer connected via a network (LAN (Local Area Network), WAN (Wide Area Network), etc.). Program modules 1093 and program data 1094 may then be read by CPU 1020 through network interface 1070 from other computers.
- LAN Local Area Network
- WAN Wide Area Network
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Abstract
Description
[実施の形態1の概要]
本実施の形態では、L3転送技術に分類されるマルチキャスト(映像配信サービス等)において、転送装置内へのフィルタ設定について説明する。
ここで、通信事業者が用意する転送装置の内、ユーザに一番近い場所にあるもの(ルータ等)を「エッジ」と呼び、そのエッジが持つ物理ポートにVLANを設定する。
実施の形態1におけるネットワークシステムについて説明する。図4は、実施の形態1におけるネットワークシステムの一例を模式的に示す図である。図4に示すように、実施の形態1におけるネットワークシステムは、上位サーバ10と、フィルタ設定装置20と、転送装置30と、装置情報データベース(DB)50とを有する。
次に、フィルタ設定装置20について説明する。フィルタ設定装置20は、例えば、ROM(Read Only Memory)、RAM(Random Access Memory)、CPU(Central Processing Unit)等を含むコンピュータ等に所定のプログラムが読み込まれて、CPUが所定のプログラムを実行することで実現される。また、フィルタ設定装置20は、ネットワーク等を介して接続された他の装置との間で、各種情報を送受信する通信インタフェースを有する。例えば、フィルタ設定装置20は、NIC(Network Interface Card)等を有し、LAN(Local Area Network)やインターネットなどの電気通信回線を介した他の装置との間の通信を行う。
ここで、上位サーバ10がMC用共用フィルタの設定を投入したとき、フィルタ設定装置20の状態として、以下の4つの状態がある。図7-1、図8-1及び図9-1は、図4に示す共用フィルタ情報テーブル211の一例を示す図である。図7-2、図8-2及び図9-2は、図4に示す共用フィルタ適用先テーブル212の一例を示す図である。
入力されたソースアドレス:AAA
入力されたグループアドレス:bbb
適用先ユーザIFの場所:転送装置EEEのポート2
次に、共用フィルタ作成部22が実行する処理について説明する。図10は、図4に示す共用フィルタ作成部22が実行するフィルタ作成処理の処理手順を示すフローチャートである。なお、以下の処理は、共用フィルタが設定されていないユーザIFに新たな共用フィルタ作成して、適用する場合に実行されるほか、ユーザIFに適用されている共用フィルタを他の共用フィルタ(新たに作成された共用フィルタまたは既に存在する共用フィルタ)に変更する場合も同様に実行される。
続いて、フィルタ設定装置20が実行するフィルタ設定処理について説明する。まず、状態1、すわなち、既にある共用フィルタを適用対象のユーザIF追加する場合について説明する。なお、既にこの共用フィルタは、転送装置30の他のユーザIFに適用されている。図11は、実施の形態1に係るフィルタ設定処理の処理手順を示すシーケンス図である。
次に、状態2、すわなち、既にある共用フィルタを、設定対象となった転送装置30に新たに追加する場合について説明する。なお、既にある共用フィルタは、設定対象の転送装置30のいずれのユーザIFにも未適用である。図12は、実施の形態1に係るフィルタ設定処理の他の処理手順を示すシーケンス図である。
次に、状態4、すわなち、共用フィルタ情報テーブル211及び共用フィルタ適用先テーブル212のいずれにも、設定を投入されたフィルタの情報がない状態の際に、新たな共用フィルタを作成して、転送装置30に新たに設定する場合について説明する。図13は、実施の形態1に係るフィルタ設定処理の他の処理手順を示すシーケンス図である。
このように、本実施の形態1におけるフィルタ設定装置20は、各共用フィルタの情報が記録される共用フィルタ情報テーブル211と、各共用フィルタの適用先の転送装置が記録された共用フィルタ適用先テーブル212を有する。そして、フィルタ設定装置20は、L3転送技術において、上位サーバ10からの指示を基に、共用フィルタ情報テーブル211及び共用フィルタ適用先テーブルを参照して、共用フィルタの新規作成または既存の共用フィルタの流用を判定し、判定結果に基づいてコンフィグを生成して転送装置30に複数IF間で共用されるフィルタを設定する。
次に、実施の形態について説明する。実施の形態2では、故障時や装置保守のために、ユーザが別のエッジに収容替えされることがある場合の共用フィルタ設定処理を説明する。
図15に示すように、フィルタ設定装置220は、共用フィルタDB21、共用フィルタ作成部222(作成部)及びコンフィグ投入部223(設定部)を有する。
次に、共用フィルタ作成部222が実行する処理について説明する。図17は、図15に示す共用フィルタ作成部222が実行するフィルタ作成処理の処理手順を示すフローチャートである。
続いて、フィルタ設定装置20が実行するフィルタ設定処理について説明する。図18は、実施の形態2に係るフィルタ設定処理の処理手順を示すシーケンス図である。
このように、実施の形態2に係るフィルタ設定装置220は、共用フィルタDB21内に、転送装置30と配信サーバのソースアドレスとの関係を記録したテーブルを有する。そして、フィルタ設定装置220は、上位サーバ10からの指示に含まれる配信サーバのソースアドレスの情報に基づき、移行先の転送装置30でも同じ配信サーバからのマルチキャストを受け取るために配信サーバのソースアドレスを特定した上で、共用フィルタ適用のためのコンフィグを作成する。
フィルタ設定装置20,220の各構成要素は機能概念的なものであり、必ずしも物理的に図示のように構成されていることを要しない。すなわち、フィルタ設定装置20,220の機能の分散及び統合の具体的形態は図示のものに限られず、その全部または一部を、各種の負荷や使用状況などに応じて、任意の単位で機能的または物理的に分散または統合して構成することができる。
図19は、プログラムが実行されることにより、フィルタ設定装置20,220が実現されるコンピュータの一例を示す図である。コンピュータ1000は、例えば、メモリ1010、CPU1020を有する。また、コンピュータ1000は、ハードディスクドライブインタフェース1030、ディスクドライブインタフェース1040、シリアルポートインタフェース1050、ビデオアダプタ1060、ネットワークインタフェース1070を有する。これらの各部は、バス1080によって接続される。
20,220 フィルタ設定装置
21 共用フィルタDB
22,222 共用フィルタ作成部
23,223 コンフィグ投入部
30 転送装置
40 ユーザ端末
50 装置情報DB
211 共用フィルタ情報テーブル
212 共用フィルタ適用先テーブル
213 転送装置とMCソースの関連テーブル
Claims (8)
- 各共用フィルタの情報が記録される第1のテーブルと、各共用フィルタの適用先の転送装置が記録された第2のテーブルとを有する記録部と、
L3転送技術において、上位サーバからの指示を基に、前記第1のテーブル及び前記第2のテーブルを参照して、共用フィルタの新規作成または既存の共用フィルタの流用を判定する作成部と、
前記作成部の判定結果に基づいてコンフィグを生成し、転送装置に、複数のIF間で共用される共用フィルタを設定する設定部と、
を有することを特徴とする設定装置。 - 前記作成部は、前記上位サーバからユーザ追加を指示された場合、前記指示に該当する共用フィルタの情報が前記第1のテーブルにあり、追加を指示されたユーザの端末を収容する前記転送装置が前記第2のテーブルにある場合には、前記指示に該当する共用フィルタであって、前記端末を収容する転送装置の他のIFの共用フィルタを共用することを判定することを特徴とする請求項1に記載の設定装置。
- 前記作成部は、前記上位サーバからユーザ追加を指示された場合、前記指示に該当する共用フィルタの情報が前記第1のテーブルにあり、追加を指示されたユーザの端末を収容する前記転送装置が前記第2のテーブルにない場合、前記指示に該当する共用フィルタを前記ユーザの端末を収容する転送装置に追加することを判定するとともに、前記第2のテーブルに、前記指示に該当する共用フィルタの適用先として前記端末を収容する転送装置を追加することを特徴とする請求項1または2に記載の設定装置。
- 前記作成部は、前記上位サーバからユーザ追加を指示された場合、前記指示に該当する共用フィルタの情報が前記第1のテーブルにない場合には、前記指示に該当する共用フィルタを新たに作成し、作成した共用フィルタを、追加を指示されたユーザの端末を収容する前記転送装置に適用することを判定し、作成した共用フィルタの情報及びその適用先を前記第1のテーブル及び前記第2のテーブルに記録することを特徴とする請求項1~3のいずれか一つに記載の設定装置。
- 前記作成部は、前記第2のテーブルに記録がない共用フィルタの情報が前記第1のテーブルに記録されている場合、前記第1のテーブルから該共用フィルタの情報を削除することを特徴とする請求項1~4のいずれか一つに記載の設定装置。
- 前記記録部は、前記転送装置ごとに、配信サーバのソースアドレスを記録する第3のテーブルを記憶し、
前記作成部は、前記指示に含まれるソースアドレスの情報を基に、前記第3のテーブルを参照して、前記指示に含まれるソースアドレスに該当する前記配信サーバのソースアドレスを特定して、前記設定部に、特定した前記配信サーバのソースアドレスを出力し、
前記設定部は、前記作成部が特定した前記配信サーバのソースアドレスを含むコンフィグを生成することを特徴とする請求項1~5のいずれか一つに記載の設定装置。 - 設定装置が実行する設定方法であって、
前記設定装置は、各共用フィルタの情報が記録される第1のテーブルと、各共用フィルタの適用先の転送装置が記録された第2のテーブルとを有する記録部を有し、
L3転送技術において、上位サーバからの指示を基に、前記第1のテーブル及び前記第2のテーブルを参照して、共用フィルタの新規作成または既存の共用フィルタの流用を判定する作成工程と、
前記作成工程における判定結果に基づいてコンフィグを生成し、転送装置に、複数のIF間で共用される共用フィルタを設定する設定工程と、
を含んだことを特徴とする設定方法。 - コンピュータを請求項1~6のいずれか一つに記載の設定装置として機能させるための設定プログラム。
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JP2017212759A (ja) * | 2014-01-16 | 2017-11-30 | 日本電気株式会社 | パケット転送装置、制御装置、通信システム、通信方法及びプログラム |
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JP2006148655A (ja) * | 2004-11-22 | 2006-06-08 | Matsushita Electric Ind Co Ltd | マルチキャストアドレス管理装置及び方法 |
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