Patent Publication Number: US-2005132027-A1

Title: Method, apparatus and system for formal planning and implementation of network strategies and architecture

Description:
FIELD  
      The present invention relates to the field of network systems management and, more particularly to a method, apparatus and system for formal planning and implementation of network strategies and architecture.  
     BACKGROUND  
      Information technology (“IT”) networks in large corporations today are becoming increasingly complex. As these corporations grow and technology advances, the tasks of planning and/or architecting these networks are becoming exponentially more difficult. Existing network architectural models such as Asynchronous Transfer Mode (“ATM”), Transport Control Protocol/Internet Protocol (“TCP/IP”), Signaling Systems 7 (“SS7”) and 3 rd  Generation Wireless (“3G”) are structured specific to their technology framework and supporting network services, and as a result, these architectural models do not comprehend the complexities of IT network environments. Other networking models such as the Open Systems Interconnect (“OSI”) model similarly do not address architectural service and resource integration and evolution and/or migrating capabilities across alternative architectural stacks and/or network domains. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
      The present invention is illustrated by way of example and not limitation in the figures of the accompanying drawings in which like references indicate similar elements, and in which:  
       FIG. 1  illustrates a conceptual overview of an embodiment of the present invention;  
       FIG. 2  is a flow chart illustrating in further detail how the framework in  FIG. 1  may be utilized to plan a network strategy and/or architecture;  
       FIG. 3  illustrates an example of a roadmap that may be generated by an embodiment of the present invention; and  
       FIG. 4  is a flow chart illustrating the process of generating a roadmap according to an embodiment of the present invention. 
    
    
     DETAILED DESCRIPTION  
      Embodiments of the present invention provide an integration framework for formal planning and implementation of network strategies and architecture. More specifically, an embodiment of the present invention discloses a method, apparatus and system that enable IT organizations to evaluate and implement network requirements using a taxonomy-oriented representation of network technology and/or service architecture. Reference herein to “IT organizations” shall not be limited to such and may include any entity planning and/or implementing network strategies and/or architectures. Additionally, reference in the specification to “one embodiment” or “an embodiment” of the present invention means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases “in one embodiment,” “according to one embodiment” or the like appearing in various places throughout the specification are not necessarily all referring to the same embodiment.  
      As previously described, the task of planning and/or architecting large, complex networks is becoming exponentially more difficult. Currently, in order to evolve a network&#39;s capabilities and/or resources, IT organizations are likely forced to make ad-hoc determinations. When dealing with large, complex networks, the task of determining all the necessary resources and/or capabilities, and a plan for implementing the same is daunting, at best. At worst, the lack of a formal process for making such determinations leaves open room for significant margins of error and/or inefficiencies. Thus, for example, the IT organization may determine that the corporation is in need of more robust firewall services to enhance security, but has no standard methodology by which it may determine how these new services may be transitioned and/or integrated with the existing security features on the corporation&#39;s global and heterogeneous networks.  
      Embodiments of the present invention provide a conceptual representation of network technology and service architecture from which a cohesive IT network strategy and/or roadmap may be developed. Although described herein as being specific to IT environments, embodiments of the present invention are not so limited and may be beneficial in any complex, heterogeneous network environment. According to embodiments of the present invention, IT organizations may utilize a taxonomy-oriented representation of a network&#39;s resources and capabilities to plan and implement new network strategies and/or architectures.  FIG. 1  illustrates a conceptual overview of an embodiment of the present invention. As illustrated, a network&#39;s capabilities are divided into a taxonomy-oriented representation of the network, namely a framework of “vertical capability services” (referred to hereafter as “Network Capability Services Architecture 100”) and “horizontal capability services” (referred to hereafter as “Network Transport and Communication Services Architecture 150”). The network may include Frame Relay networks, ATM networks, IP/Ethernet-based networks, 802.11a/b and/or 2.5/3G technologies and systems, but embodiments of the invention are not limited by current network architectures and/or network service implementations.  
      In one embodiment of the present invention, Network Capability Services Architecture  100  represents the fundamental services supported by a communication system. Overall, Network Capability Services Architecture  100  may provide reactive and proactive network management and network control services used to manage and/or provision transport, Quality of Service (“QoS”), virtual networks and security capabilities. This component may be viewed as a logically separate entity in the framework, and may be further broken down into its subcomponent services. These subcomponent services are represented in  FIG. 1  as Transport Services Capability Architecture  102 , Virtual Network Capability Architecture  104 , Security Capability Service Architecture  106  and Quality of Service Architecture  108 .  
      Transport Services Capability Architecture  102  includes essential communications services to support basic, best-effort communications while Virtual Network Capability Architecture  104  includes the ability to create logical divisions of the physical network to enable the partitioning, isolation and connectivity for various applications. Similarly, Security Capability Service Architecture  106  includes protection and privacy capabilities to enable confidentiality, integrity, and availability of networks and Quality of Service Architecture  108  includes the underlying network services and/or device mechanisms to enable service differentiation, traffic engineering and bandwidth management.  
      According to an embodiment, Network Transport and Communication Services Architecture  150  may include three architectural layers, representing i.) physical transport and link access; ii.) low-level IP services for enhancing the core transport; and iii.) high-level services providing additional basic and enhanced services over the core physical and logical transport. In one embodiment, these layers may be deployed as separate overlay network architectures in various implementation forms including peer networks, hierarchical virtual networks, and/or edge-based network architecture implementation schemes. These architectural layers are illustrated in  FIG. 1  as Core Network Transport Architecture  156 , Core Network Services Architecture  154  and IP Layered Services Architecture  152 .  
      Core Network Transport Architecture  156  may include wired and/or wireless means for geographically dispersed corporate sites to remotely communicate via a network such as a Metropolitan Area Network (MAN) and/or Wide Area Network (WAN). Core Network Transport Architecture  156  may additionally provide local network connectivity (wired and/or wireless) within a corporate site. Core Network Services Architecture  154  includes the fundamental network services from which layered services are built to support current and next-generation computing and networking. Finally, IP Layered Services Architecture  152  may include a set of common infrastructure services to provide standardized capabilities for data, voice/telephony and multimedia applications.  
       FIG. 2  is a flow chart illustrating in further detail how the framework in  FIG. 1  may be utilized to plan a network strategy and/or architecture. Although the following operations may be described as a sequential process, many of the operations may in fact be performed in parallel and/or concurrently. In addition, the order of the operations may be re-arranged without departing from the spirit of embodiments of the invention. In  201 , the network services and resources of a current network architecture (“Baseline Network Architecture N” currently, i.e., at time T=0) may be organized according to the horizontal and vertical elements of the taxonomic framework. Additionally, in  202 , the desired target network architecture strategies and requirements (“Target Network Architecture M”) may be defined. For each element of Baseline Network Architecture N, missing, lacking and/or overlapping network services and/or resources may be identified in  203 . In  204 , based on the identified services and/or resources, and based on Target Network Architecture M, dependency and integration strategies may be developed. This process may continue until all elements of Baseline Network Architecture N are processed in  205  and Target Network Architecture M is defined in  206 .  
      In one embodiment, Target Network Architecture M represents the new network strategy and/or architecture that the IT organization is trying to achieve. As described above, the details of the strategy and/or architecture are not determined in an ad-hoc manner, as is typically done currently. Instead, according to an embodiment of the present invention, given the taxonomy-oriented representation of the network, the missing, lacking and/or overlapping resources and capabilities in the network may be easily identified. Additionally, the same framework may be utilized to develop strategic plans and/or new network architectures for other networks. It will be readily apparent to those of ordinary skill in the art that although various types of networks may include different resources and/or capabilities, the elements described in  FIG. 1  above exist in almost all complex networks. Thus, for example,  FIG. 1  may be also applicable to voice network architecture (illustrated in  FIG. 1  as “Voice Network Architecture 150”) and/or management capabilities architecture (illustrated in  FIG. 1  as “Management Capabilities Architecture 175”).  
      Upon identifying Target Network Architecture M, an IT organization may additionally utilize embodiments of the present invention to determine an appropriate implementation strategy and/or roadmap.  FIG. 3  illustrates an example of a roadmap (“Roadmap 300”) that may be generated by an embodiment of the present invention. Roadmap  300  may include detailed timelines of network evolution based on resource and/or capabilities available at different points in time (illustrated as times T=0 to T=X). Thus, for example, as illustrated, if the process described in  FIG. 2  above identifies Resources  1 - 4  and Capabilities A-D as desired resources and capabilities in Target Network Architecture M, Roadmap  300  may include a detailed timeline of how and/or when Resources  1 - 4  and Capabilities A-D may be available and/or implemented.  
       FIG. 4  is a flow chart illustrating the process of generating a roadmap according to an embodiment of the present invention. Again, although the following operations may be described as a sequential process, many of the operations may in fact be performed in parallel and/or concurrently. In addition, the order of the operations may be re-arranged without departing from the spirit of embodiments of the invention. In  401 , the evolving network services and/or resources (“Evolved Network Architecture N+X, representing evolved Baseline Network Architecture N at various times T=1 to T+=X) may be identified within the framework of  FIG. 1 . In  402 , the network services and/or resources of Evolved Network Architecture N+X may be mapped to elements of Target Network Architecture M, forming a matrix of components (N+X by M). The timing or availability of resources and/or services may then be mapped to the identified components in the matrix in  403 , thus generating a three-dimensional timing matrix (N+X by M by T). The process may continue in  404  until each component is identified and mapped to the three-dimensional matrix. In  405 , based on the three-dimensional timing matrix, a roadmap of Evolved Network Architecture N+X may be developed (i.e., Evolved Network Architecture N+1 at time T=1, Evolved Network Architecture N+2 at time T=2, etc.), to arrive at Target Network Architecture M at time T=X.  
      The networks according to embodiments of the present invention may include a variety of computing devices. According to an embodiment of the present invention, computing devices may include various components capable of executing instructions to accomplish an embodiment of the present invention. For example, the computing devices may include and/or be coupled to at least one machine-accessible medium. As used in this specification, a “machine” includes, but is not limited to, any computing device with one or more processors. As used in this specification, a machine-accessible medium includes any mechanism that stores and/or transmits information in any form accessible by a computing device, the machine-accessible medium including but not limited to, recordable/non-recordable media (such as read only memory (ROM), random access memory (RAM), magnetic disk storage media, optical storage media and flash memory devices), as well as electrical, optical, acoustical or other form of propagated signals (such as carrier waves, infrared signals and digital signals).  
      According to an embodiment, a computing device may include various other well-known components such as one or more processors. The processor(s) and machine-accessible media may be communicatively coupled using a bridge/memory controller, and the processor may be capable of executing instructions stored in the machine-accessible media. The bridge/memory controller may be coupled to a graphics controller, and the graphics controller may control the output of display data on a display device. The bridge/memory controller may be coupled to one or more buses. A host bus controller such as a Universal Serial Bus (“USB”) host controller may be coupled to the bus(es) and a plurality of devices may be coupled to the USB. For example, user input devices such as a keyboard and mouse may be included in the computing device for providing input data.  
      In the foregoing specification, the invention has been described with reference to specific exemplary embodiments thereof. It will, however, be appreciated that various modifications and changes may be made thereto without departing from the broader spirit and scope of the invention as set forth in the appended claims. The specification and drawings are, accordingly, to be regarded in an illustrative rather than a restrictive sense.