CN101917293A - Service overlay network system-based adaptive management method - Google Patents
Service overlay network system-based adaptive management method Download PDFInfo
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Abstract
The invention discloses a service overlay network system-based adaptive management method. In the method, a service specific overlay network (SSON) which is built according to specific service requirements can be built or stopped; the change of the SSON can be automatically adapted; an adaptive management scheme is generated according to the information change of users, networks and service providers in the SSON; and the scheme is executed according to the specific requirements. By the method, the expandability of the overlay network is improved and the network management scheme with higher efficiency and effectiveness is dynamically generated.
Description
Technical field
The present invention relates to the overlay network technical field, relate in particular to a kind of a kind of adaptive management method based on service coverage network system.
Background technology
Overlay network is owing to extensibility preferably and provide the ability of new service to obtain more and more widely application.But, set up via a series of nodes that virtual link connects, and every virtual link may be made up of many physical links because overlay network is to be based upon on other network.Though therefore it has above-mentioned advantage, along with the sustainable growth of carrying amount of information, can produce the phenomenon of overload, and the resource of consumption network.In addition, overlay network normally independent design also uses separately independently routing mechanism, owing to be subjected to the restriction of bottom-layer network bottleneck, can influence each other between each overlay network, thereby reduce their performance.Therefore, a kind of good overlay network administrative mechanism is guaranteeing that on the network performance be crucial.
Part as environment network integrated project ANIP (Ambient Networks Integrated Project), overlay network SMART (Smart MultimediA Routing and Transport) a kind ofly sets up in order to optimize media distribution service, it is by having network information control and resource location more about the knowledge of topological sum network attribute reaching the purpose of optimizing media distribution service, and its supports content to send model to comprise functions such as clean culture and multicast.In overlay network SMART, make up a concrete service coverage network SSON (Service Specific OverlayNetwork) at every kind of different media distribution service or bundle of services, customization particular network service (as media mode, network response, network consumption).The virtual network that service coverage network SSON is made up of one group of dummy node and link, the network edge entity that comprises media port MP (MediaPorts), therefore on communication path, provide the elastic characteristic that to adjust content and service (as buffer memory, adaptivity and synchronism).
Overlay node is by realizing that the necessary physical network nodes of network required function constitutes.It is made up of controlling schemes and user's scheme.Controlling schemes is responsible for establishment, route, termination service coverage network SSON and its variation of self adaptation and is produced the control corresponding scheme; User's scheme is received packet by covering supporting layer from network, and carries out the transmission of information at cover layer.Overlay node basis function is separately carried out media client MC (MediaClient), the function of source of media MS (MediaSource) or media port MP in network.MP is concrete network edge composition, and it provides the media session function: comprise concrete route content, clever caching mechanism and adaptivity.In addition, MP, MC and MS Be Controlled scheme are controlled, and a media port directory service of Coverage Control scheme entail MPDS (MediaPorts Directory Service) keeps the information about available MP, for example position, load and expenditure.
Yet, overlay network only is that the medium routing plan based on data flow of service coverage network SSON is managed accordingly, and fail to form concrete structure, therefore structure and the management of concrete service coverage network SSON can not be formed according to the change of user's request, the function of customer requirements can not be dynamically realized adapting to.Mechanism proposed by the invention is at this deficiency.Adaptive management ability when the present invention is primarily aimed at the overlay network variation, study a kind of adaptive management mechanism based on service coverage network system, this adaptive management mechanism can be controlled the establishment, termination of overlay network and to the adaptive ability of network change; Simultaneously can dynamically produce the control and management scheme according to user, network and ISP's concrete condition.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, a kind of a kind of adaptive management method based on service coverage network system is provided.
The objective of the invention is to be achieved through the following technical solutions: a kind of a kind of adaptive management method based on service coverage network system, service coverage network system comprise information-storing device, trigger, proposal generator, covering scheme decision management point, covering scheme execution management point and scheme memory; This method mainly comprises following concrete steps:
(1) proposal generator PG produces dissimilar schemes;
(2) covering scheme decision management point DMP creates, stops service coverage network SSON and adaptive management;
(3) covering scheme is carried out management point EMP and is guaranteed node execution Managed Solution;
(4) the scheme memory is preserved the scheme that service coverage network SSON produces;
Wherein, step (1) is specially: proposal generator PG generation scheme makes up or the variation of self adaptation service coverage network SSON, any change round service coverage network SSON all can cause an adaptive process, and produces a new dynamic management scheme.
Step (2) is specially: covering scheme decision management point DMP receives scheme from proposal generator PG, it is analyzed and make appropriate decision.It is provided with an independent address ID for each service coverage network SSON with each data flow.Just can carry out alone data flow route in order to create or to adapt to a service coverage network SSON when needing, its sends the performance requirement of address ID and service coverage network SSON and media port MP capacity requirement to PG.
Step (3) specifically comprises following substep:
(3.1) the covering project management is acted on behalf of PMA and receive the scheme that will be performed from covering scheme decision management point DMP, and it is sent decision of request;
(3.2) scheme is carried out and to be acted on behalf of PEA and carry out or remove Managed Solution on overlay node, and it is received and analyzes from monitoring and act on behalf of the decision scheme that obtains the MA;
(3.3) resource interface is acted on behalf of RIA and is represented the covering scheme to carry out interface between management point EMP and the overlay node;
(3.4) different layers that MA is placed on system is as requested acted on behalf of in monitoring.
Beneficial effect of the present invention: the invention provides a kind of adaptive management mechanism based on service coverage network system.It can make up, stop proprietary service coverage network SSON according to concrete service request structure, but and the variation of self adaptation SSON network, generate the adaptive management scheme according to the user among the SSON, network and ISP's information change, carry out this scheme according to concrete needs.It had both improved the extensibility of overlay network, also dynamically generated the network management scheme with higher efficient and validity simultaneously.
Description of drawings
Fig. 1 is a service coverage network adaptive management mechanism illustraton of model;
Fig. 2 is a covering scheme decision management point DMP structure chart;
Fig. 3 is that the covering scheme is carried out management point EMP structure chart.
Embodiment
As shown in Figure 1, the service coverage network system of the present invention with adaptive management mechanism comprises: information-storing device, trigger, proposal generator, covering scheme decision management point, covering scheme are carried out management point and scheme memory.Wherein, information-storing device, proposal generator, covering scheme decision management point, covering scheme are carried out management point and are linked to each other with trigger respectively, information-storing device, proposal generator, covering scheme decision management point and covering scheme are carried out management point and are connected successively, and the scheme memory links to each other with covering scheme decision management point.
, network provides scheme and individual services scheme.Any change round service coverage network SSON all can cause an adaptive process, and produces a new dynamic management scheme.This scheme is dispatched to and covers core of the present invention is that proposal generator PG (Police Generator), covering scheme decision management point DMP (Decision Management Point) and covering scheme are carried out management point EMP (EnforcementManagement Point).
The covering scheme is carried out management point EMP provides execution when the adaptive management scheme determines node, and the decision scheme is then finished in covering scheme decision management point DMP.Covering scheme decision management point DMP receives scheme from proposal generator PG, it is assessed and they are in time sent.The covering scheme is carried out management point EMP and is carried out to the DMP request decision of covering scheme decision management point and to it.For any change of network information content, adaptive process is triggered by the scheme of first generation, adapts to new information requirements, then the dynamic of coming implementation according to the dispatching method that experience produced in the past.
In this architecture, must distinguish the content between a plurality of information sources, for example user profile, ISP's information and network provider's information etc.The information content of all these forms must be considered when setting up system.Suppose that required information obtains in the memory space of network, and it is passed to proposal generator PG.Proposal generator PG produces dissimilar schemes, and for example user's scheme, application scheme, service provide scheme scheme decision management point DMP generating the decision scheme, and is distributed to suitable covering scheme and carries out management point EMP and carry out.
In addition, administrative mechanism of the present invention provides the scheme memory to preserve all schemes that is produced for each service coverage network SSON.The information of the effective management method that its also in store other association, structure or the like the content that may comprise service coverage network SSON, media port directory service MPDS is to all available media port MP and their capacity, and user's registration information and accounts information are tabulated.
The information that the information that information-storing device storage networking supplier has, the information that the ISP has and user have for proposal generator provides various information, and can be used as the trigger condition of trigger.
Because each overlay node may become the part of many service coverage network SSON simultaneously, therefore scheme is organized in the mode of colony, the service coverage network SSON that each group representative is different, autgmentability that like this can enhanced system and reduce the expenditure of management, and can be implemented in that number of nodes lacks this target as far as possible among the given service coverage network SSON.More than be basic organizational structure's situation of system, specifically describe the composition and the course of work thereof of each part below.
1. proposal generator PG forms and function
Proposal generator is responsible for making up the network topology of suitable performance (postponing or concrete overlay path bandwidth as low overlay path) requirement and media port MP capacity (spatial cache as media port MP is wanted 300M etc. at least).The optimal path of search accord with Q oS restriction.Realize one group of available qos parameter at available configuration, these parameters (for example link load, delay, shake, bandwidth etc.) are according to the network available information or use existing measuring technique to consider.In order to finish the optimal path discovery procedure, allow to carry out interactively distribution of information between the network, up to the successful transmission of media data.
Proposal generator comprises various required media port MP.Media port MP must select meticulously, and its position should be as much as possible near the shortest path between source and the receiving terminal.For this reason, or be suitable media port MP search optimal path, perhaps be from the source to media port MP again to selected optimal path selection is suitable the receiving terminal media port MP.But the former can not guarantee to find suitable media port MP between source and purpose, for fear of this problem, needs repeatedly expanded search variable and repeatedly search, and this has just obviously increased finds the time of optimal path and consumed more resources.The latter allows for optimal path and carries out parallel search, can reduce the expenditure of management, but can not guarantee the immediate media port MP of shortest path between selection source and the receiving terminal.The mode that the present invention takes is for by selecting a media port MP randomly the media port directory service MPDS near receiving terminal from geography.Just wish that as the approaching node of geography less jumping figure is arranged between them, so the present invention adopts the latter's method.
In case proposal generator has been found optimal path, it will make up a connection matrix represents the topology of service coverage network SSON and it is sent to administration agent, arrives proposal generator PG then.Proposal generator PG generation scheme makes up or the variation of self adaptation service coverage network SSON, and scheme is delivered to administration agent.
2. covering scheme decision management point DMP forms and function
The major function of covering scheme decision management point DMP is establishment, stops the adaptive change of service coverage network SSON and management control service coverage network SSON and make corresponding administration change.In order to understand in real time the dynamic behaviour of service coverage network SSON, combine and realize the function of covering scheme decision management point DMP with the various scheme of acting on behalf of.As shown in Figure 2.Covering scheme decision management point DMP is by administration agent DMPMA (Management Agent), and OCRA (Overlay ConflictResolution Agent) is acted on behalf of in overlay network conflict solution and communication agent CA (Communication Agent) constitutes.
Administration agent is received scheme from scenario manager PG, it is analyzed and make appropriate decision.It is provided with an independent address ID for each service coverage network SSON with each data flow.When needing, just can carry out data flow route alone, for example finish required QoS etc.In order to create or to adapt to a service coverage network SSON, performance requirement and media port MP capacity requirement that it sends address ID and service coverage network SSON arrive scenario manager PG.
The conflict solution is acted on behalf of OCRA and is received after the scheme of administration agent generation, and the contingent any conflict in front is checked.Guaranteeing that new scheme can solve the conflict of front, and can not produce negative influence.If find conflict, will refuse this scheme and cause new service coverage network SSON adaptive process.If find conflict, administration agent or carry out management point EMP to carry out its function from communication agent CA delivery plan to suitable covering scheme perhaps is stored in it in scheme memory, so that use when needing.Communication agent CA is responsible for delivery plan and carries out among the management point EMP to suitable covering scheme, or receives required scheme target from covering scheme execution management point EMP.
3. covering scheme is carried out management point EMP and is formed and function
As shown in Figure 3, covering scheme execution management point EMP acts on behalf of PMA by covering project management, and scheme is carried out and acted on behalf of PEA, and resource interface is acted on behalf of RLA, and MA four parts composition is acted on behalf of in monitoring, and its function is to guarantee node execution Managed Solution.
Act on behalf of PMA (Overlay Policy Management Agent) 3.1 cover project management
The covering project management is acted on behalf of PMA and receive the scheme that will be performed from covering scheme decision management point DMP, and it is sent decision of request.It is also from monitoring agency (Monitoring Agent) notified and corresponding incident.In case receive a new scheme, PMA analyzes it and definite suitable action.If it is a decision, its scheme that sends to carried out act on behalf of PEA (policy enforcementagent) and locate, whether PEA determines to have scheme to be performed again.If it is a suitable incident, thereby it makes up a suitable scheme and communicates with covering scheme decision management point DMP and obtains decision.
3.2 carrying out, scheme acts on behalf of PEA (Policy Enforcement Agent)
Scheme is carried out and to be acted on behalf of PEA and be responsible for carrying out or remove Managed Solution on overlay node.It receives and analyzes the decision scheme that obtains from MA.Act on behalf of at resource interface under the help of RLA (RAESOURCE Interface Agent), on suitable overlay node, carry out the decision scheme.And whether MA is arrived in successful report to send an execution.
3.3 resource interface is acted on behalf of RIA (Resource Interface Agent)
Resource interface is acted on behalf of RLA and is represented the covering scheme to carry out interface between management point EMP and the overlay node.Therefore it and corresponding network component communicate and carry into execution a plan.For example, it communicates to upgrade with the covering OSL of service layer (Overlay Service Layer) and covers the routing table inlet, partly communicates the resource of preserving or discharging it with media port MP.
3.4 MA (Monitoring Agent) is acted on behalf of in monitoring
The monitoring agency is placed on the different layers of system as requested.Each monitoring is acted on behalf of MA and is responsible for monitoring the situation of its place layer and carries out the main monitoring proxy-reporting situation of management point EMP to being arranged in the covering scheme, and therefore monitoring is acted on behalf of MA and can be monitored available resource and ability.For example, monitoring is acted on behalf of MA and can be detected overlay node to the connection situation of neighbor node etc. in network layer.Function and the media port MP that MA also monitors overlay node acted on behalf of in monitoring, no matter when when it detects the function reduction in network somewhere, this situation is sent to monitor acts on behalf of MA producing a suitable incident.
Has the architecture of the overlay network adaptive management of extensibility when the invention provides a kind of information change Network Based.It can make up, stop proprietary service coverage network SSON according to concrete service request structure, but and the variation of self adaptation SSON network, generate the adaptive management scheme according to the user among the SSON, network and ISP's information change, carry out this scheme according to concrete needs.It had both improved the extensibility of overlay network, also dynamically generated the network management scheme with higher efficient and validity simultaneously.
Proposal generator PG is responsible for making up the network topology of suitable performance (postponing or concrete overlay path bandwidth as low overlay path) requirement and media port MP capacity (spatial cache as media port MP is wanted 300M etc. at least).The optimal path of search accord with Q oS restriction.Realize one group of available qos parameter at available configuration, these parameters (for example link load, delay, shake, bandwidth etc.) are according to the network available information or use existing measuring technique to consider.In order to finish the optimal path discovery procedure, allow to carry out interactively distribution of information between the network, up to the successful transmission of media data.
The major function of covering scheme decision management point DMP is to create, stop service coverage network SSON and adaptive management.In order to understand in real time the dynamic behaviour of service coverage network SSON, combine and realize the function of covering scheme decision management point DMP with the various scheme of acting on behalf of, as shown in Figure 2.Covering scheme decision management point DMP is by administration agent DMPMA (Management Agent), and OCRA (Overlay Conflict Resolution Agent) is acted on behalf of in overlay network conflict solution and communication agent CA (CommunicationAgent) constitutes.
The covering scheme is carried out management point EMP and is acted on behalf of PMA (Overlay PolicyManagement Agent) by covering project management, scheme is carried out and is acted on behalf of PEA (Policy Enforcement Agent), resource interface is acted on behalf of RIA (Resource Interface Agent), MA (Monitoring Agent) four parts composition is acted on behalf of in monitoring, and its function is to guarantee node execution Managed Solution.
The present invention is based on a kind of adaptive management method of service coverage network system, mainly comprise following concrete steps:
1. proposal generator PG produces dissimilar schemes
Proposal generator comprises various required media port MP.Media port MP must select meticulously, and its position should be as much as possible near the shortest path between source and the receiving terminal.For this reason, or be suitable MP search optimal path, perhaps be from the source to media port MP again to the suitable MP of selected optimal path selection the receiving terminal.But the former can not guarantee to find suitable media port MP between source and purpose, for fear of this problem, needs repeatedly expanded search variable and repeatedly search, and this has just obviously increased finds the time of optimal path and consumed more resources.The latter allows for optimal path and carries out parallel search, can reduce the expenditure of management, but can not guarantee the immediate media port MP of shortest path between selection source and the receiving terminal.The mode that the present invention takes is for by selecting a media port MP randomly the media port directory service MPDS near receiving terminal from geography.Just wish that as the approaching node of geography less jumping figure is arranged between them, so the present invention adopts the latter's method.
In case proposal generator has been found optimal path, it will make up a connection matrix represents the topology of service coverage network SSON and it is sent to administration agent, arrives proposal generator PG then.Proposal generator PG generation scheme makes up or the variation of self adaptation service coverage network SSON, and scheme is delivered to administration agent.
In this architecture, must distinguish the content between a plurality of information sources, for example user profile, ISP's information and network provider's information etc.The information content of all these forms must be considered when setting up system.Suppose that required information obtains in the memory space of network, and it is passed to proposal generator PG.Proposal generator PG produces dissimilar schemes, and for example user's scheme, application scheme, service provide scheme, network that scheme and individual services scheme are provided.Any change round service coverage network SSON all can cause an adaptive process, and produces a new dynamic management scheme.This scheme is dispatched to covering scheme decision management point DMP generating the decision scheme, and is distributed to suitable covering scheme and carries out management point EMP and carry out.
2. covering scheme decision management point DMP creates, stops service coverage network SSON and adaptive management
Administration agent is received scheme from proposal generator PG, it is analyzed and make appropriate decision.It is provided with an independent address ID for each service coverage network SSON with each data flow.When needing, just can carry out data flow route alone, for example finish required QoS etc.In order to create or to adapt to a service coverage network SSON, performance requirement and media port MP capacity requirement that it sends address ID and service coverage network SSON arrive PG.
The conflict solution is acted on behalf of OCRA and is received after the scheme of administration agent generation, and the contingent any conflict in front is checked.Guaranteeing that new scheme can solve the conflict of front, and can not produce negative influence.If find conflict, will refuse this scheme and cause new service coverage network SSON adaptive process.If find conflict, administration agent or carry out management point EMP to carry out its function from communication agent CA delivery plan to suitable covering scheme perhaps is stored in it in scheme memory, so that use when needing.CA is responsible for delivery plan and carries out among the management point EMP to suitable covering scheme, or receives required scheme target from covering scheme execution management point EMP.
3. covering scheme is carried out management point EMP and is guaranteed node execution Managed Solution
As shown in Figure 3, the covering scheme is carried out management point EMP and is acted on behalf of PMA (OverlayPolicy Management Agent) by covering project management, scheme is carried out and is acted on behalf of PEA (Policy Enforcement Agent), resource interface is acted on behalf of RIA (Resource Interface Agent), MA (Monitoring Agent) four parts composition is acted on behalf of in monitoring, and its function is to guarantee node execution Managed Solution.
3.1 the covering project management is acted on behalf of PMA and receive the scheme that will be performed from covering scheme decision management point DMP, and it is sent decision of request
It is also from monitoring agency (Monitoring Agent) notified and corresponding incident.In case receive a new scheme, PMA analyzes it and definite suitable action.If it is a decision, its scheme that sends to carried out act on behalf of PEA (policy enforcement agent) and locate, whether PEA determines to have scheme to be performed again.If it is a suitable incident, thereby it makes up a suitable scheme and communicates with covering scheme decision management point DMP and obtains decision.
3.2 scheme is carried out and to be acted on behalf of PEA and carry out or remove Managed Solution on overlay node, it is received and analyzes from monitoring and act on behalf of the decision scheme that obtains the MA
Scheme is carried out and to be acted on behalf of PEA and be responsible for carrying out or remove Managed Solution on overlay node.It is received and analyzes from monitoring and act on behalf of the decision scheme that obtains the MA.Act on behalf of at resource interface under the help of RLA (RAESOURCEInterface Agent), on suitable overlay node, carry out the decision scheme.And whether successful report is acted on behalf of MA to monitoring to send an execution.
3.3 acting on behalf of RIA, resource interface represent the covering scheme to carry out interface between management point EMP and the overlay node
Therefore it and corresponding network component communicate and carry into execution a plan.For example, it communicates to upgrade with the covering OSL of service layer (Overlay Service Layer) and covers the routing table inlet, partly communicates the resource of preserving or discharging it with media port MP.
3.4 the different layers that MA is placed on system is as requested acted on behalf of in monitoring
Each monitoring is acted on behalf of MA and is responsible for monitoring the situation of its place layer and carries out the main monitoring proxy-reporting situation of management point EMP to being arranged in the covering scheme, and therefore monitoring is acted on behalf of MA and can be monitored available resource and ability.For example, monitoring is acted on behalf of MA and can be detected overlay node to the connection situation of neighbor node etc. in network layer.Function and the media port MP that MA also monitors overlay node acted on behalf of in monitoring, no matter when when it detects the function reduction in network somewhere, this situation is sent to monitor acts on behalf of MA producing a suitable incident.
4. the scheme memory is preserved the scheme that service coverage network SSON produces
Administrative mechanism of the present invention provides the scheme memory to preserve all schemes that is produced for each service coverage network SSON.The information of the effective management method that its also in store other association, structure or the like the content that may comprise service coverage network SSON, media port directory service MPDS is to all available media port MP and their capacity, and user's registration information and accounts information are tabulated.
Because each overlay node may become the part of many service coverage network SSON simultaneously, therefore scheme is organized in the mode of colony, the service coverage network SSON that each group representative is different, autgmentability that like this can enhanced system and reduce the expenditure of management, and can be implemented in that number of nodes lacks this target as far as possible among the given service coverage network SSON.
Claims (4)
1. a kind of adaptive management method based on service coverage network system, service coverage network system comprise that information-storing device, trigger, proposal generator, covering scheme decision management point, covering scheme carry out management point and scheme memory.It is characterized in that this method mainly comprises following concrete steps:
(1) proposal generator PG produces dissimilar schemes.
(2) covering scheme decision management point DMP creates, stops service coverage network SSON and adaptive management.
(3) covering scheme is carried out management point EMP and is guaranteed node execution Managed Solution.
(4) the scheme memory is preserved the scheme that service coverage network SSON produces.
2. according to the described a kind of adaptive management method of claim 1 based on service coverage network system, it is characterized in that, described step (1) is specially: proposal generator PG generation scheme makes up or the variation of self adaptation service coverage network SSON, any change round service coverage network SSON all can cause an adaptive process, and produces a new dynamic management scheme.
3. according to the described a kind of adaptive management method of claim 1 based on service coverage network system, it is characterized in that, described step (2) is specially: covering scheme decision management point DMP receives scheme from proposal generator PG, it is analyzed and make appropriate decision.It is provided with an independent address ID for each service coverage network SSON with each data flow.Just can carry out alone data flow route in order to create or to adapt to a service coverage network SSON when needing, its sends the performance requirement of address ID and service coverage network SSON and media port MP capacity requirement to PG.
4. according to the described a kind of adaptive management method of claim 1, it is characterized in that described step (3) specifically comprises following substep based on service coverage network system:
(3.1) the covering project management is acted on behalf of PMA and receive the scheme that will be performed from covering scheme decision management point DMP, and it is sent decision of request.
(3.2) scheme is carried out and to be acted on behalf of PEA and carry out or remove Managed Solution on overlay node, and it is received and analyzes from monitoring and act on behalf of the decision scheme that obtains the MA.
(3.3) resource interface is acted on behalf of RIA and is represented the covering scheme to carry out interface between management point EMP and the overlay node.
(3.4) different layers that MA is placed on system is as requested acted on behalf of in monitoring.
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| CN112953992A (en) * | 2019-12-11 | 2021-06-11 | 阿里巴巴集团控股有限公司 | Network system, communication and networking method, device and storage medium |
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| CN112953992A (en) * | 2019-12-11 | 2021-06-11 | 阿里巴巴集团控股有限公司 | Network system, communication and networking method, device and storage medium |
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Application publication date: 20101215 |