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Cloud Computing management                                          2


            3)      Management controller function set: it contains multiple controlling functions that supports the
                    running of the cloud-based network management platform, and each function can be implemented
                    by a small function block. Some basic function blocks in the controllers are listed below.
                    –   VM monitoring function: it provides the ability to monitor the performance of VMs. It monitors
                        the  dynamic  information  of  the  running  status  of  VMs.  When  performance  degradation  is
                        detected, the monitor informs the controller to handle the resource reassignment or service
                        transportation.
                    –   Management service analysis function: it provides the ability of analyzing each management
                        services in network management. Each management service is registered in this analyzer, and
                        all the related information about this service is analyzed and storage for future use.
                    –   Management service deployment function: it provides the ability of deploying required services
                        for a management task. Each management task may need the support of multiple management
                        services, and for those services which are not ready for use will appropriately be deployed into
                        some virtualized resources on the cloud infrastructure.
                    –   Management service composing function: it provides the ability of composing several small
                        management functions into a new complex management service, so that they can easily provide
                        a new type of management functionality without having to change the implementation of the
                        component management functions.
                    –   More function blocks can be extended to support the running of the cloud-based network
                        management architecture.
            4)      Management service function set: it provides management functions to network operators, and
                    they are composed of all kinds of small management functions. Each network management function
                    is performed by a service application, and those management functions can form composed services
                    that provide more complex network management functions. Most management service applications
                    are applications specific to a network technology, but there are still some applications which are
                    more general to be used across different network technologies. In such cases, the common service
                    application will be reused.

            7.4     The relationship between the components in the architecture

            This clause will introduce the relationship between the components in the architecture.



                                                   r4             r4                     r5    NEFs of the
                                         Management     Management    Management
                                        service function  service function  service function   network to be
                                                                                                managed
                                                    Management service FS
                                                        r3
                     Network
                   management          VM monitor   Management   Management   Management
                    application         function  service analysis   service deployment   service composing
                                                  function
                                                                         function
                                                             function
                    function set
                                                     Management controller FS
                                                        r2
                                                     Cloud hypervisor function
                     Cloud
                  infrastructure                 r1
                  Function sets
                                          Element        Element        Element
                                          function       function       function
                                                    Cloud physical equipment functions


                 Figure 4 – Reference point between the components in the cloud-based network management
                                                  functional architecture




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