WO2014060226A1 - Method and system for handling it information related to cloud computing services - Google Patents

Method and system for handling it information related to cloud computing services Download PDF

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Publication number
WO2014060226A1
WO2014060226A1 PCT/EP2013/070726 EP2013070726W WO2014060226A1 WO 2014060226 A1 WO2014060226 A1 WO 2014060226A1 EP 2013070726 W EP2013070726 W EP 2013070726W WO 2014060226 A1 WO2014060226 A1 WO 2014060226A1
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plurality
mapping
resource requests
service
characterized
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PCT/EP2013/070726
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French (fr)
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Luis Miguel Contreras Murillo
Víctor LÓPEZ ÁLVAREZ
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Telefonica, S.A.
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    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00Arrangements for program control, e.g. control units
    • G06F9/06Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/46Multiprogramming arrangements
    • G06F9/50Allocation of resources, e.g. of the central processing unit [CPU]
    • G06F9/5061Partitioning or combining of resources
    • G06F9/5072Grid computing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic regulation in packet switching networks
    • H04L47/70Admission control or resource allocation
    • H04L47/82Miscellaneous aspects
    • H04L47/827Aggregation of resource allocation or reservation requests
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWN ENERGY USE
    • Y02D10/00Energy efficient computing
    • Y02D10/20Reducing energy consumption by means of multiprocessor or multiprocessing based techniques, other than acting upon the power supply
    • Y02D10/22Resource allocation
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWN ENERGY USE
    • Y02D10/00Energy efficient computing
    • Y02D10/30Reducing energy consumption in distributed systems
    • Y02D10/36Resource sharing

Abstract

In the method, a computer network provisioning cloud computing services or applications comprises gathering available IT resources information of said computer network, considering a plurality of IT resource requests received by a network controlling or managing system. The method, in order to handle said plurality of IT resource requests uses a Service Indexer element for classifying and categorizing said plurality of IT resource requests by grouping, mapping in a certain category of said available IT resources by the definition of a plurality of mapping rules, said IT resource requests classified and categorized of said target subset, each group containing IT resource requests parameters that are equivalent according to said mapping rules. The system of the invention is adapted to implement the method of the invention.

Description

Method and system for handling IT information related to cloud computing services

Field of the art

The present invention generally relates, in a first aspect, to a method for handling

IT information related to cloud computing services, and more particularly to a method for offering IT information in an efficient and scalable way to any entity which may use it.

A second aspect of the invention relates to a system adapted to implement the method of the first aspect of the invention.

Prior State of the Art

The current service provisioning for Cloud Computing applications is totally agnostic about the conditions experienced by the underlying network. As consequence, the applications could cause an inefficient use of the network resources. To solve this gap it is necessary a more tight coordination among the application and the network in such a way that both application and network resources are jointly considered and allocated. This is called "Cross-Stratum Optimization" (CSO).

To do that, elements traditionally developed on the network side as part of the network control or management plane require handling this IT information in an effective way, acting as facilitators of such optimization. There are three clear examples where network can compute path information taking into account such IT information: distributed routing protocols, PCE architecture or ALTO protocol.

Distributed routing protocols are typical mechanism to compute routes in nowadays networks. One example is OSPF, which based on weight links it computes the best route between two points. Thanks to OSFP-TE, this computation can be done taking into account restrictions on the traffic demands. To do so, this protocol stores IT information in its Traffic Engineering Data base (TED), which is used during the computation process.

Path Computation Element (PCE) in a GMPLS based network should take into account a new set of requirements, which are the IT-related parameters, in order to find the optimal end-to-end path, considering both the IT and the network resources, for Cloud Computing services. In this situation, the conventional PCE needs to gather IT information among the network. To do that, new extensions have been proposed for the existing protocols in FP7 GEYSERS project [1]. Some other initiatives are also exploring similar ways of integration [2]. The information gathering process of PCE is similar to the case of distributed routing protocols.

Other possible element on the network side to handle the IT resource information is the ALTO server. The ALTO server contains network information that can be used to influence the application decision in order to have a better consumption of network resources. This capability is also being considered as a potential source of optimization for the use of IT resources in Data Centers [3].

The proposed invention goes beyond the state-of-art and intends to handle the IT-related information in an efficient and scalable way.

Despite the present invention is described within the framework of a

PCE/(G)MPLS control plane, the use of this invention can be extended to any framework which may require IT information, such as Software Defined Networks (SDN), which uses Openflow to provision the connections, or to other platforms able to handle IT resources, such as the ALTO server.

Problems with existing solutions:

Some issues in terms of efficiency and scalability can be envisaged from handling IT information in PCE-based architectures with current solutions:

• IT-related messages contain more information (CPU type, free disk capacity, power consumption, etc.) than network-related messages, and its variation is more frequent and dynamic. A direct consequence of this is that it is more costly to storage and handling such a huge volume of information, and that too many parameters are continuously refreshed, as well.

• Several IT resources will be connected to the same network node. In this situation, the path calculation including a certain network node for similar attached IT resources is performed multiple times (one per connected IT resource). However, different paths to equivalent IT resources attached to the same node are essentially equivalent, which can be considered a wastage of computational resources. An aside consequence is that the computation complexity increases proportionally to the number of IT resources.

To mitigate the impact of these issues on the performance of the PCE, it is required to alleviate the PCE from unnecessary information handling and avoidable computation wastage by reducing the number of elements to be considered in the calculation, and slowing the information refresh. Summary of the Invention

It is necessary to offer an alternative to the state of the art which covers the gaps found therein, particularly those related to the lack of proposals for offering the cloud computing capabilities by handling IT-related information in an efficient and scalable way.

To that end, the present invention relates, in a first aspect, to a method for handling IT information related to cloud computing services, said computer network provisioning cloud computing services or applications and comprising gathering available IT resources information, such as CPU type, free disk capacity and/or power consumption, of said computer network, considering a plurality of IT resource requests received by a network controlling or managing system.

On contrary to the known proposals, in a characteristic manner, the method of the first aspect in order to handle said plurality of IT resource requests uses a Service Indexer element for classifying and categorizing said plurality of IT resource requests by grouping, mapping in a certain category of said available IT resources by the definition of a plurality of mapping rules, said IT resource requests classified and categorized of said target subset, each group containing IT resource requests parameters that are equivalent according to said mapping rules.

In an embodiment, the IT-related parameters are mapped in real time and the mapping process takes into account previously classified and categorized IT-related parameters.

In another embodiment, the number of occurrences of a certain category of said cloud computing services will be just updated, instead of having to deal with each individual IT resource one-by-one.

The Service Indexer provides a summarized view of said updated occurrences to a Path Computation Element (PCE) by limiting said number of updated occurrences through the use of aggregation capabilities at the time of notifying said updates and, in order to allow said aggregation capabilities a timer is implemented.

In yet another embodiment, the computation of a unique path is implemented for all the number of occurrences of the same certain category.

Finally, a specific occurrence of said certain category of said cloud computing services is inverted by a de-mapping process, to be used in the establishment of a new path.

The mapping rules can be defined manually or automatically, for instance from the information defined in a service catalog of IT resources offered to end users. A second aspect of the present invention, relates to a system for handling IT information related to cloud computing services, comprising a plurality of IT-related parameters comprising at least CPU type, free disk capacity and power consumption, adapted to provision a plurality of applications in a network and means for gathering and controlling network resource information.

On contrary to the known proposals, the system of the second aspect comprises a Service Indexer element arranged to classify and categorize, said plurality IT-related parameters in a target subset of parameters, by grouping, mapping in a certain category of said cloud computing services by the definition of a plurality of mapping rules said plurality of IT-related parameters classified and categorized in said target subset, each group containing IT-related parameters that are equivalent according to said mapping rules.

In a preferred embodiment, the Service Indexer element comprises:

- an admin module, arranged to configure a plurality of rules to be applied in order to perform said grouping or mapping;

- a mapper module, arranged to perform said classification and categorization of said plurality of IT-related parameters taking into account said plurality of rules received from said admin module;

- a mapping data base, for storing said mapped plurality of IT-related parameters, and

- a de-mapper module, arranged to invert said mapping for an specific occurrence of said certain category.

In another embodiment, the Service Indexer element can be either a standalone device or an integral part of a Path Computation Element (PCE), an ALTO Server, or in general whatever control or management network element.

The system of the second aspect is adapted to implement the method of the first aspect.

Brief Description of the Drawings

The previous and other advantages and features will be more fully understood from the following detailed description of embodiments, with reference to the attached, which must be considered in an illustrative and non-limiting manner, in which:

Figure 1 is a diagram showing an IT resources categorization.

Figure 2 is a diagram showing the general functionality of the Service Indexer of the present invention. Figure 3 is a diagram showing the Service Indexer modules of the present invention.

Figure 4 is a diagram showing the interfaces considered among the modules of the Service Indexer of the present invention.

Figure 5 is a flow diagram showing the Service Indexer initialization, according to an embodiment.

Figure 6 and 7 present a flow diagram of the Service Indexer mapping process, according to an embodiment.

Figure 8 presents a flow diagram of the Service Indexer de-mapping process, according to an embodiment.

Detailed Description of Several Embodiments

The present invention presents a new element that will help to efficiently handle a huge number of parameters by a network control plane. This new element classifies and categorizes raw IT-related parameters in a target subset of parameters, grouping equivalent parameters according to the target classification. This procedure reduces the number of parameters to be handled by the network management or control plane which has to operate in real-time fashion, and with limited computational resources.

Figure 1 depicts the logical process of IT parameter mapping to a category or class in order to reduce the burden of the IT resource processing to a further element, grouping the IT parameters according to a certain characteristic that makes the IT resources fitting that classification equivalent to each other from the final service point of view.

Looking at the Figure it can be seen, for instance, that two given resources, e.g. IT resources J and Z, could be mapped to the same category, named Class 4, and could be treated as equivalent resources for the provision of a certain service.

The IT parameters describing some resource availability and/or its status update will arrive in real time, in such a way that the categorization or mapping process is also implemented in real time, refreshing the information taking into account the previously classified parameters. Basically, the number of occurrences of a certain category will be just updated, instead of having to deal with each individual IT resource one-by-one.

Currently, the trend in the provision of Cloud Computing services is to offer the cloud capabilities by means of a Service Catalog, where the customers can choose the service characteristics that fit their needs, such as number of processors, operating system, disk capacity, etc. This Service Catalog is usually implemented through a web portal in a self-service manner. This portal contains atomic items (CPU type, capacity, etc.) that can be configured and priced to fulfill a particular need.

This invention takes profit of such service provisioning approach by classifying the variety of IT parameters reaching the PCE (or ALTO or any other control or management platform) according to a Service Catalog-like method, that could coincide or not with the classification being offered to the Cloud Computing users.

That categorization will be implemented by a new entity, called Service Indexer, which will receive the raw IT-resource parameters and will provide a classified view of them to the PCE. Several policies could be applied by the Service Indexer to implement the classification of the IT parameters. Those policies could be dynamically fed through an external interface.

The proposed invention could be implemented as a standalone apparatus or as an integral part of the PCE. There are state-of-the-art proposals [1] where the PCE (or

ALTO or any other control or management platform) is able to directly receive IT resource information. Then, the Service Indexer emerges as a front-end element which handles the complexity of processing the IT resource information. In this situation, it could be seem as an integral component of the PCE, or as a separate device interworking with the PCE (or ALTO or any other control or management platform). This is left open, as an implementation option.

Figure 2 schematically represents an embodiment of the functional behaviour of the Service Indexer.

The categorization will consist on grouping the individual IT resources according to some characteristics or properties, in order to handle them as equivalent IT resources which could be alternatively used to satisfy the end user demand (as shown in figure 1 ).

For instance, a user demand of 100Gb of disk capacity could be equally served by both an available disk of 102Gb and an available disk of 107Gb. From the point of view of the PCE (or ALTO or any other control or management platform) both IT- resources are equivalent, and could be classified in a category such as e.g. Hard Disk Capacity Class-X = range {100Gb, 1 10Gb}. Thus, a user demand of 100Gb of disk capacity can be satisfied by any of the IT resources categorized as Class-X.

The number of IT resources fitting one category can be seen as a number of occurrences or instances of such category, in such a way that the dynamically update of the availability of certain IT-resources is reduced to a variation in the number of occurrences for certain category. In this way, the Server Indexer can provide a summarized view of the updates to the PCE (or ALTO or any other control or management platform), e.g., previous number of occurrences - assigned occurrences + resumed occurrences, limiting the number of updates being handled by the PCE (or ALTO or any other control or management platform), through the use of some aggregation capabilities at the time of notifying these updates. The use of aggregated notifications implies the necessity of implementing a timer in order to allow the aggregation process (thus delaying the notification process a certain delay to collect and aggregate occurrences of the same kind of notification). The use or not of aggregated advertisements is a trade-off between real-time operation versus the number of notification messages to handle, and it can be considered as optional for an implementation.

Additionally, occurrences of the same category being attached to the same border node will not cause distinct path calculations. A unique path calculation can be implemented for all the occurrences of the same category, picking-up one of those occurrences in that node if finally the service uses these resources.

Internal structure of the Service Indexer:

The Service Indexer element is composed of a number of modules, as shown in Figure 3 (white-coloured boxes are considered as part of the invention):

• Admin module: this module is the entry point to configure the rules to be applied later by the Mapper module. That rules are consistent either directly with the Service Catalog offered by the Cloud Service Provider, or with any other criteria valuable to the Service Provider.

• Mapper module: this module is in charge of applying the rules received from the Admin module to classify and categorize the raw IT-data in order to simplify and reduce the number of parameters injected to the PCE and TE DB infrastructure (or the corresponding elements in ALTO or any other control or management platform). Furthermore, the Mapper module is in charge of invert the mapping procedure for selecting one or more occurrences of a specific mapped value. The selection criteria are out of the scope of this invention. Such criteria are injected through the Admin module and executed by the Mapper module.

• Mapping Data Base: this module is in charge of storing the mapped parameters in order to make possible to invert the mapping process to assist the network control protocols to identify specific IT elements for network path construction. • De-mapper: this module request to invert the mapping process for a specific occurrence of a certain IT category in order to allow the network control protocols to set up or configure a specific path making use of concrete IT resources. The selection criteria of the specific IT occurrence used in the de-mapping process is out-of-the scope of the invention.

Figure 4 depicts in an embodiment the interfaces considered among the modules.

• SA interface: through this interface the element receives the target classification to be considered when mapping the raw IT data, and other configuration settings, as well. This interface can be feeded manually or by means of whatever state-of-the-art method (e.g., xml file). The following transactions are considered: Administration, Policies definition, Statistics, Status, Configuration, Monitoring, etc.

• SR interface: this interface receives the raw IT-related information data from the network. The format in which the IT-related data is received can be compliant with any state-of-the-art protocol definitions, as those described in [1 ], and it is out of the scope of this invention.

• S/ interface: this interface communicates the two internal modules to configure the Mapper module with the target classification categories. The format followed for such communication is out of the scope of this invention. The following transactions are considered: Administration,

Policies definition, Statistics, Status, Configuration, Monitoring, etc.

• SB interface: this interfaces is used to access the Mapping DB for both storing and retrieving mapping information. It is also used to invert the mapping process for identifying a concrete occurrence of a mapping parameter. The following types of messages are defined for this interface:

Put Resource of Class-X, Get Resource of Class-X, Select Resource of Class-X, Response Resource of Class-X Identifier, Delete Resource of Class-X.

• SM interface: this interface is used to pass the mapped IT-data to the PCE / TE DB (or the corresponding elements in ALTO or any other control or management platform). The format in which the IT-related data is received can be compliant with any state-of-the-art protocol definitions, as those described in [1] as extensions of PCEP protocol (or the corresponding protocols in ALTO or any other control or management platform), or lightweight variations of them. The following types of messages are defined for this interface: Resource Class-X Status Refresh.

• SD interface: through this interface the De-mapper module requests and obtains the complete details of a specific occurrence of mapped IT information. That information is used later on by the network control protocols to set up or configure a specific path in the network from/to the selected IT end point. The following types of messages are defined for this interface: Resource Details Request, Resource Details Response.

• Sp interface: this new interface is used by the network control plane to request the conversion of a mapped IT parameter to a specific and concrete occurrence to be used in the setup of a new path by the network control plane. This interface does not exist today, and it implies an extension/modification of existing procedures in the PCE, ALTO, or any network control or management platform in general. The following types of messages are defined for this interface: Select Resource of Class-X,

Resource of Class-X Identifier.

Extensions considered in the PCE in this invention:

In order to interwork with the invention here proposed, some considerations have to be assumed for the network control or management platforms, like PCE or ALTO. For the PCE, the main assumption is that it is able to handle IT parameters, as proposed in [1]. This is not yet an standard behavior for the PCE, but an state-of-the-art development, which is being pushed in the IETF [2][4]. Furthermore, within the scope of this invention, it is required that the PCE has some capabilities for requesting specific details of a categorized IT resource of a certain class, once selected for a computed path. Finally, the PCE should store (in the TEDB) the categorized IT resources with the number of occurrences for them, in contrast with the proposal in [1 ], where the raw IT resource data are stored.

A similar assumption can be done for ALTO, where the state-of-the-art [3] is proposing IT resource capabilities as a potential evolution.

Figure 5 present an embodiment of the Service Indexer proposal, showing the initialization process, the treatment of the IT resource information, and the de-mapping request from the PCE (or ALTO or any other control or management platform). The Service Indexer initialization process is as follows:

1. The operator defines (through the Admin module) the mapping rules to be applied to the incoming advertisements of IT resources in order to classify them for fitting in a reduced number of categories. The mapping rules (stored in the Mapper module) could be defined manually or automatically, for instance from the information defined in a service catalog of IT resources offered to end users.

2. The operator configures (through the Admin module) completely the Service

Indexer by defining the rest of parameters needed for the operation. 3. As a result the Service Indexer is operational, and it is ready to accept advertisements of IT resources form other elements in the network. Figure 6 and Figure 7 present other embodiments of the mapping process followed by the Service Indexer. The process is as follows:

1. The Service Indexer receives (through the Mapper module) an incoming advertisement of an IT resource from a network element (for instance, being part of a data center). This advertisement could be in the form defined in [1], or whatever other format defined for transport IT parameters of a giver IT resource.

2. The advertisement is then processed by the Service Indexer (in the Mapper module), which checks the received information against the configured rules for resource mapping.

3. A rule look-up is triggered to find out the applicable mapping (in the Mapper module).

4. If the received advertisement matches a configured rule, then that rule is applied (by the Mapper module).

5. If the received advertisement does not match a configured rule, then a configured default rule is applied (by the Mapper module). This default rule could be e.g. discarding of the IT advertisement, application of a default classification, etc.

6. Whatever a specific rule or a default rule is applied, the Service Indexer reports stats and register logs about the mapping decision (by using the Admin module).

7. The IT resource details are registered for further use (in the Mapping DB module) together with the mapping to a certain class, Class-X, in such a way that this IT resource is kept as an specific occurrence of Class-X. 8. Once the mapping process happens, the Service Indexer (through the Mapper module) checks if aggregate advertisements are or not enabled. The Aggregate advertisements allow advertising to the PCE (or ALTO or any other control or management platform) only one message with several occurrences of the same class or category, as opposed to non-aggregated advertisements where individual mappings are notified to the PCE (or ALTO or any other control or management platform). The use of aggregated notifications implies to set up a timer in order to allow the aggregation process, so the notification to the PCE (or ALTO or any other control or management platform) implies a minimal delay. The use or not of aggregated advertisements is a trade-off between real-time operation versus the number of notification messages to handle. This is left open to implementation.

9. In case no aggregate advertisements are enabled, the Service Indexer

(through the Mapper module) notifies to the PCE (or ALTO or any other control or management platform) the individual occurrence of an IT resource fitting Class-X.

10. In case aggregate advertisements are enabled, the Service Indexer (through the Mapper module) sums-up this new occurrence to the previously existing occurrences of the same class during the period defined by the timer.

1 1 . The Service Indexer (in the Mapper module) checks if the time-out for the aggregation process has been reached. If the timer has not yet expired, the Service Indexer returns to the initial state.

12. Once the timer expires, the Service Indexer delivers (by means of the Mapper module) the notification to the PCE (or ALTO or any other control or management platform) with the aggregated view of the number of occurrences per class or category during the period defined by the timer value.

At the end of the flow, the Service Indexer returns to the initial state.

Figure 8 presents in yet another embodiment the Service Indexer de-mapping process. This process is as follows:

1. The PCE (or ALTO or any other control or management platform) requires the detailed information of an IT resource fitting certain Class-X to set up a path (this is equivalent to consider a specific instance of Class-X). The PCE (or

ALTO or any other control or management platform) will trigger the de- mapping process (requesting the de-mapping process by means of the De- mapper module). The Server Indexer will receive such request (through the Mapper module) to select and identify a specific occurrence of an IT resource of Class-X. Additional information helping to decide what type of resource select could be part of the request (e.g., location information).

2. The Service Indexer (by an interaction among the Mapper and the Mapping DB modules) will check the consistency of the request.

3. A decision process (by the Mapper module) is taken as result of the consistency check.

4. In case the request is consistent with the information stored by the Mapping DB, an available IT resource is chosen and delivered to the PCE (or ALTO or any other control or management platform), by the Mapper module, towards the De-mapper module. The selection process could be assisted by additional information transferred in the request, or whatever other source of information available (e.g., request originator, historical information, reported resource availability, etc.). Furthermore, once selected an occurrence of a certain category, the Mapping DB is updated accordingly to reflect that such occurrence is no longer available.

5. In case the request is not consistent, a preconfigured default action is executed (by the Mapper module). This action could be e.g. discarding the de-mapping request, informing the requestor, etc.

At the end of the flow, the Service Indexer returns to the initial state.

Advantages of the Invention:

The PCE (or ALTO or any other entity using Service Indexer) is not flooded with continuous IT-related advertisements

- Only the number of occurrences of a certain service category is updated

The path calculation complexity is reduced

- A unique calculation for all the equivalent IT-resources attached to the same node

Simpler storage of IT-related data

· Customized mapping

- An infrastructure provider could have distinct mappings for different cloud serving providers using the same physical infrastructure

Direct mapping of customer requests to available infrastructure

· Additional advantages: new "administrative" information can be included through the service index identifiers: - Price/cost (e.g., to discriminate costly resources)

- Location of the resource (e.g., to discriminate the geographical location of the resource, i.e. US vs. Europe)

ACRONYMS

ALTO Application Layer Transport Optimization CSO Cross-Stratum Optimization

DB Data Base

IT Information Technology

OSPF Open Short Path First

OSPF-TE Open Short Path First Traffic Engineering PCE Path Computation Element

SDN Software Defined Networks

TED Traffic Engineering Data base

REFERENCES

[1] FP7 GEYSERS, "WP4 Internal Report - PCEP+ extensions", January 2012

[2] D. Dhody, Y. Lee, N. Ciulli, L.M. Contreras, 0. Gonzalez de Dios, "Cross Stratum Optimization enabled Path Computation", draft-dhody-pce-cso-enabled-computation-02 (work in progress), September 2012.

[3] Y. Lee, G. Bernstein, S. Madhavan, D. Dhody, T. Choi, "ALTO Extensions for Collecting Data Center Resource Information", draft-lee-alto-ext-dc-resource-00 (work in progress), July 2012.

[4] A. Tovar, L.M. Contreras, G. Landi, N. Ciulli, "Path Computation Requirements for Cross-Stratum Optimization", draft-tovar-cso-path-computation-requirements-00 (work in progress), October 201 1.

Claims

Claims
1. A method for handling IT information related to cloud computing services, said computer network provisioning cloud computing services or applications and comprising gathering available IT resources information, such as CPU type, free disk capacity and/or power consumption, of said computer network, considering a plurality of IT resource requests received by a network controlling or managing system characterized in that in order to handle said plurality of IT resource requests a Service Indexer element is used for classifying and categorizing said plurality of IT resource requests by grouping, mapping in a certain category of said available IT resources by the definition of a plurality of mapping rules, said IT resource requests classified and categorized of said target subset, each group containing IT resource requests parameters that are equivalent according to said mapping rules.
2. A method according to claim 1 , characterized in that said plurality IT resource requests are mapped in real time.
3. A method according to claim 2, characterized in that said mapping comprises taking into account previously classified and categorized IT resource requests.
4. A method according to any of previous claims, characterized in that it comprises updating the number of occurrences of said certain category of said cloud computing services.
5. A method according to claim 4, characterized in that said Service Indexer provides a summarized view of said updated occurrences to said network controlling or managing system by limiting said number of updated occurrences through the use of aggregation capabilities at the time of notifying said updates.
6. A method according to claim 5, characterized in that it comprises implementing a timer in order to allow said aggregation capabilities.
7. A method according to claim 5 or 6, characterized in that it comprises implementing a unique path establishment for all the number of occurrences of a same certain category.
8. A method according to claim 7, characterized in that it further comprises inverting, by de-mapping a specific occurrence of said certain category of said available IT resources.
9. A method according to claim 1 , characterized in that said plurality of mapping rules are manually defined by a user.
10. A method according to claim 1 , characterized in that said plurality of mapping rules are automatically defined by said Service Indexer.
1 1. A system for handling IT information related to cloud computing services, said computer network adapted to provision cloud computing services or applications and means for gathering available IT resources information, such as CPU type, free disk capacity and/or power consumption, of said computer network, considering a plurality of IT resource requests received by a network controlling or managing system characterized in that it comprises a Service Indexer element arranged to classify and categorize, said plurality IT resource requests in a target subset of parameters, by grouping, mapping in a certain category of said available IT resources by the definition of a plurality of mapping rules said plurality of IT resource requests classified and categorized in said target subset, each group containing IT resource requests that are equivalent according to said mapping rules.
12. A system according to claim 1 1 , characterized in that said Service Indexer element comprises:
- an admin module, arranged to configure a plurality of rules to be applied in order to perform said grouping or mapping;
- a mapper module, arranged to perform said classification and categorization of said plurality of IT resource requests taking into account said plurality of rules received from said admin module;
- a mapping data base, for storing said mapped plurality of IT resource requests and
- a de-mapper module, arranged to invert said mapping for an specific occurrence of said certain category.
13. A system according to claim 12, characterized in that said Service Indexer element is a standalone device.
14. A system according to claim 12, characterized in that said Service Indexer element is an integral part of a Path Computation Element (PCE), an Software Defined Networks (SDN), an Application Layer Transport Optimization (ALTO) server or any other network control plane framework able to handle IT resources
15. A system according to any of previous claims 12 to 14 adapted to implement the method of previous claims 1 to 10.
PCT/EP2013/070726 2012-10-19 2013-10-04 Method and system for handling it information related to cloud computing services WO2014060226A1 (en)

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