data and communications network. The objective of

Computer Dynamics Network Design Report Part 1 is shown in red Complete report required for Assignment 2 Executive Summary Purpose The purpose of this report is to assess Computer Dynamic’s current data and communications network. The objective of the report is to offer a proposed solution for a modern network that meets the organisation’s needs. A review of the existing network was conducted, management and users were interviewed. Current network performance statistics were provided by the ITS team. A physical assessment of both buildings was conducted. Findings The existing network is exhibiting congestion, bottlenecks, poor speed and is not adequate for growth in line with company strategy There is no physical connection between the two buildings occupied by the organisation. Both buildings are currently sharing information across a VPN site to site tunnel. The current VPN approach between the two buildings is inefficient. There is currently no disaster recovery opportunity in place for company data. Recommendations ï‚· An investment is required to form a physical network connection between the two buildings, Fiber Optic is suggested ï‚· An investment in layer 3 switching technology is recommended to take advantage of the Fiber Optic upgrade ï‚· An investment in hardware for disaster recovery is highly recommended ï‚· Two major departments should consider moving to Cloud based technology to replace existing applications Table of Contents 1. Introduction……………………………………………………………………………………………………………………..……..1 1.1 Purpose ………………………………………………………………………………………………………………………….. 1 1.2 Background………………………………………………………………………………………………………………………..1 1.2 Scope of the report…………………………………………………………………………………………………………..…1 2. Organisational Description ………………………………………………………………………………………… 2 2.1 Overall Departmental Structure……………………………………………………………………………………….…….2 2.2 Physical Structure……………………………………………………………………………………………….….….…….3 2.3 Statement of Business Network Purpose………………………………………………………………………………. 3 3. Current Network Analysis: User Requirements ……………………………………………………………….. 4 3.1 Network users – Analysis ………………………………………………………………………………………………… 4 3.2 Capacity estimation …………………………………………………………………………………………………….. 13 4. Current Network …………………………………………………………………………………………………….. 17 4.1 Circuits/Cabling …………………………………………………………………………………………………………… 17 4.2 Hardware (User & Network) …………………………………………………………………………………………. 18 4.3 Software ……………………………………………………………………………………………………………………. 20 4.4 Current Network Layout ………………………………………………….. Error! Bookmark not defined. 4.5 Analysis of existing network ……………………………………………. Error! Bookmark not defined. 5. Proposed Network ………………………………………………………………………………………………….. 24 5.1 Proposed Network – Circuits ………………………………………………………………………………………… 25 5.2 Proposed Network – Hardware …………………………………………………………………………………….. 26 5.3 Proposed Network – Software ………………………………………………………………………………………. 27 5.4 Proposed Network Layout ………………………………………………… Error! Bookmark not defined. 6. Conclusions …………………………………………………………………………………………………………. 300 7. Recommendation……………………………………………………………………………..…………………………………………30 List of References ……………………………………………………………………………………………………….. 32 APPENDIX A: ORGANISATIONAL CHART COMPUTER DYNAMICS ……………………………………………. I APPENDIX B: LOGICAL NETWORK DIAGRAMS CURRENT NETWORK ……………………………………….. II APPENDIX C: PHYSICAL NETWORK DIAGRAM CURRENT NETWORK (Building 1) ………………………. IX APPENDIX C: PHYSICAL NETWORK DIAGRAM CURRENT NETWORK (Building 2) ………………………. X APPENDIX D: PHYSICAL NETWORK DIAGRAM PROPOSED NETWORK (BUILDING 1) ………………….. XI APPENDIX d: PHYSICAL NETWORK DIAGRAM PROPOSED NETWORK (BUILDING 2) ………………….. XII APPENDIX E: TOPOLOGY …………………………………………………………………………………………….. XIII APPENDIX F: LOGICAL NETWORK DIAGRAMS PROPOSED NETWORK ………………………………….. XVII APPENDIX E Equipment & COSTS ………………………………………………………………………………… XVIII Name & SID Page 1 Assignment 2 1. INTRODUCTION 1.1 Purpose The aim of this report is to assess the existing Computer Dynamics data communications network in conjunction with its business goals and make suitable recommendations to modernise the network while addressing organisational needs. 1.2 Background Computer Dynamics is an established software development company with existing data networks, housing three hundred computers across two separate buildings. The network was upgraded approximately four years ago however the company has experienced significant growth since then, due to marketing and sales efforts. There is currently no physical connecting network between the two buildings. In addition, the existing separate networks show signs of overloading. Without modification, this situation will continue since network traffic is anticipated to in response to more sof
tware projects commencing. As part of an overall growth strategy, the organisation recognises that the current network structure cannot be sustained. Computer Dynamics is prepared to invest in the current network in order to meet future needs in line with company growth objectives. 1.3 Scope of the report 1. The report addresses the current organisational structure and its business purposes for the network. An analysis of the user requirements and the existing network has been performed, areas covered within the report are: ï‚· Users, requirements and capacity levels ï‚· Current network circuitry (including diagrams) ï‚· Hardware ï‚· Software being utilised (client, server, network operating system) ï‚· Network layout, logical and physical topology ï‚· Current network performance Name & SID Page 2 Assignment 2 2. A proposed network is presented within the report. The proposed network is aimed at meeting networking requirements for the next 3-5 years, based on business information regarding growth and strategy. Areas covered within the proposed recommended network are: *Circuitry * Hardware/Devices * Software *Network Architecture 2. ORGANISATIONAL DESCRIPTION Computer Dynamics is broadly divided into management and business support functions consisting of: Finance and Administration, Marketing, Business Development (Sales), Human Resources and Legal, Quality Assurance and Information Technology Services. The remainder of the organisation is predominantly Software Development, consisting of project management, specialist groups, implementation consultants and project teams. The core business of the organisation is producing management and analytical software for its corporate clients. 2.1 Overall Departmental Structure The CEO is also the founder of the company, with a broad business background including sales and specialist skills in software development. Each functional department has a senior manager, responsible for the overall activities and performance of their department. All departmental managers are responsible to the CEO. The Finance group consists of a combined function of Finance & Administration. All corporate finance matters and administrative support are managed in this group. The group is managed by the CFO The ITS department is responsible for all network management, in final budget consultation with the CEO. All daily network operations, user support, help desk functions and network Figure 1 Departmental Structure Name & SID Page 3 Assignment 2 maintenance operations are managed within this group. The department is managed by the ITS manager. Quality Assurance ensures that software produced meets required standards within the required frameworks. The Quality Assurance manager oversees this function. The Sales department consists of pre-sales support consultants responsible for winning new business. Each has the technical knowledge to understand business processes and suggest custom solutions to potential customers. The manager of this department is the Business Development manager. Marketing is responsible for the promotion of the company and its product. The team is led by the Marketing manager. Legal and HR is a small team, managing contractual aspects and all resource management requirements and compliance. There is both a Human Resources Manager and a corporate lawyer. The largest and most complex department is the Software Development department. Lead by the Software Development manager, this department is responsible for producing the core product for the company. This group consists of seventeen software development project teams, a specialist graphics team and implementation consultants (for post-sales support). The majority of employees are within this group. Refer to Appendix A for comprehensive Organisational Structure Diagrams 2.2 Physical Structure Computer Dynamics operates out of two physical commercial buildings located adjacent to one another. The buildings are approximately 40 metres apart. Each building has three floors; Computer Dynamics occupies all three floors in each of the two buildings. Their approximate head count per building is 150. Total head count is approximately 300. There are no computer networks linking the two buildings at present. 2.3 Statement of Business Network Purpose The business data and communications network is required within Computer Dynamics, primarily to monitor the business and make business management decisions. The CEO and management Name & SID Page 4 Assignment 2 team require financial and performance information to make investment and expenditure decisions, provide a return on investment and understand the position of the organisation as a going concern. The network is responsible for communication and collaboration. Computer Dynamics is a project team environment and it is imperative for teams to be able to share information on project progress, scheduling, meeting, project intelligence and technical data. And, in a broader sense, communication and collaboration between all departments is needed to improve company efficiency. Management and employees require data on the core product (software), sales performance, marketing, legal, information technology, human resource and financials. Therefore the network must be proficient at file sharing and information storage. Each functional department produces and requires access to varying types and levels of information. The network must provide performance reliability and security of data. Users must be able to perform their jobs with minimal disruption and company data will need to be secure, current and free from harm. The sharing of organisational resources on the network is essential to maximise investments in printers, copiers and other devices. The network should allow for flexibility in the working environment including the provision of remote access to employees as and when required. The network as a whole should provide the organisation with the resources to achieve short and long term organisational objectives. It should link the two existing physical locations and be easy to maintain and manage. 3. CURRENT NETWORK ANALYSIS: USER REQUIREMENTS 3.1 NETWORK USERS – ANALYSIS The following section describes the users as functional groups in their geographic locations and outlines the types of applications used by each group. Type of user refers to the network traffic level either Standard or High Name & SID Page 5 Assignment 2 Building 2, Level 1 CEO AND SUPPORT STAFF (LAPTOP USERS) Located Building 2, Level 1 Type of user: Standard Number of users: 2 Applications used: Email, Web, Desktop Conferencing, File sharing, Intranet, general “office” applications, virus protection and access to printers. Files produced by CEO and support should have access restrictions FINANCE GROUP Located Building 1, Level 1 Type of user: High Number of users: 8 Applications used: Email, Web, General ledger & Payroll, File sharing, Intranet, general “office” applications, virus protection and access to printers Files produced by the Finance Group should have access restrictions. This group is a priority group. MARKETING GROUP Located Building 2, Level 1 Type of user: High Number of users: 4 Applications used: Email, Web, Desktop Publishing, Graphics Database, File sharing, Intranet, general “office” applications, virus protection and access to colour printers Files produced are large and storage requirements will be above average. IMPLEMENTATION CONSULTANTS (LAPTOP USERS) Located Building 2, Level1 Type of user: High Number of users: 10 Applications used: Email, Web, File sharing, Intranet, access to test environment server, screen sharing/collaboration software, training software, remote access application (vpn) general “office” applications, virus protection and access to printers Files produced by the Implementation Consultants should have access restrictions. This group is a priority group. This group regularly works offsite and must have mobility Name & SID Page 6 Assignment 2 SALES (PRE SALES) GROUP Located Building 2, Level1 Type of
user: Standard Number of users: 8 Applications used: Email, Web, Cloud based Customer Relationship Management software; File sharing, Intranet, general “office” applications, virus protection and access to printers Files produced by the Sales Group should have access restrictions LEGAL GROUP Located Building 2, Level1 Type of user: Standard Number of users: 1 Applications used: Email, Web, File sharing, Intranet, general “office” applications, virus protection and access to printers Files produced by the Legal Group should have access restrictions QUALITY ASSURANCE GROUP Located Building 2, Level1 Type of user: Standard Number of users: 2 Applications used: Email, Web, File sharing, Intranet, general “office” applications, virus protection and access to printers Files produced by the Quality Assurance Group should have access restrictions Name & SID Page 7 Assignment 2 RECEPTION/ADMINISTRATION Located Building 2, Level 1 Type of user: Standard Number of users: 2 Applications used: Email, Web, File sharing, Intranet, general “office” applications, virus protection and access to printers INFORMATION TECHNOLOGY (ITS) GROUP1 (LAPTOP USERS) Located Building 2, Level 1 Type of user: High Number of users: 3 Applications used: Email, Web, Help Desk application, Network Management software, Remote Control/Access software, File sharing, Intranet, general “office” applications, virus protection and access to printers Files & data produced by the ITS Group have access restrictions & additional storage. This group is a priority group. *note ITS is broken into 2 groups, one in each building for even support. Building 2, Level 2 GRAPHICS SPECIALIST TEAM Located Building 2, Level 2 Type of user: High Number of users: 25 Applications used: Email, Web, Graphics Software, Multimedia, File sharing, Intranet, general “office” applications, virus protection and access to colour printers Files & data produced by the Graphics Specialist Group require high storage levels. This group is a priority group. PROJECT TEAMS 1-3 Located Building 2, Level 2 Type of user: High Number of users: 8 per team (24 users in total) Applications used: Email, Web, Compiling Software, Programming Software, Testing Software, Project Management Software, File sharing, Intranet, general “office” applications, virus protection and access to printers Name & SID Page 8 Assignment 2 Files & data produced by the Project Teams require high storage levels, backup and access restriction. This group is a priority group. PROJECT SUPPORT Located Building 2, Level 2 Type of user: Standard Number of users: 1 Applications used: Email, Web, File sharing, Intranet, general “office” applications, virus protection and access to printers Building 2 Level 3 PROJECT TEAMS 4-9 Located Building 2, Level 3 Type of user: High Number of users: 8 per team (48 users in total) Applications used: Email, Web, Compiling Software, Programming Software, Testing Software, Project Management Software, File sharing, Intranet, general “office” applications, virus protection and access to printers Files & data produced by the Project Teams require high storage levels, backup and access restriction. This group is a priority group. PROJECT SUPPORT Located Building 2, Level 3 Type of user: Standard Number of users: 2 Applications used: Email, Web, Project Management Software, File sharing, Intranet, general “office” applications, virus protection and access to printers Building 1, Level 1 HEAD OF SOFTWARE DEVELOPMENT & 2 ANALYSTS + SUPPORTSTAFF Located Building 1, Level 1 Type of user: Standard Number of users: 2 Applications used: Email, Web, Project Management Software, File sharing, Intranet, general “office” applications, virus protection and access to printers. Name & SID Page 9 Assignment 2 Files produced by Head of Software and Analysts should have access restrictions. This group is a priority group. INFORMATION TECHNOLOGY (ITS) GROUP 2 (LAPTOP USERS) Located Building 1, Level 1 Type of user: High Number of users: 3 Applications used: Email, Web, Help Desk application, Network Management software, Remote Control/Access software, File sharing, Intranet, general “office” applications, virus protection and access to printers Files & data produced by the ITS Group have access restrictions & additional storage. This group is a priority group. HUMAN RESOURCES Located Building 1, Level 1 Type of user: Standard Number of users: 2 Applications used: Email, Web, Human Resources Software, File sharing, Intranet, general “office” applications, virus protection and access to printers Files produced by the Human Resources Group should have access restrictions PROJECT SUPPORT Located Building 2, Level 1 Type of user: Standard Number of users: 1 Applications used: Email, Web, Project Management Software, File sharing, Intranet, general “office” applications, virus protection and access to printers PROJECT TEAMS 10-14 Located Building 1, Level 1 Type of user: High Number of users: 8 per team (40 users in total) Applications used: Email, Web, Compiling Software, Programming Software, Testing Software, Project Management Software, File sharing, Intranet, general “office” applications, virus protection and access to printers Files & data produced by the Project Teams require high storage levels, backup and access restriction. This group is a priority group. Name & SID Page 10 Assignment 2 Building 1, Level 2 PROJECT TEAMS 15-20 Located Building 1, Level 2 Type of user: High Number of users: 8 per team (48 users in total) Applications used: Email, Web, Compiling Software, Programming Software, Testing Software, Project Management Software, File sharing, Intranet, general “office” applications, virus protection and access to printers Files & data produced by the Project Teams require high storage levels, backup and access restriction. This group is a priority group. PROJECT SUPPORT Located Building 1, Level 2 Type of user: Standard Number of users: 2 Applications used: Email, Web, Project Management Software, File sharing, Intranet, general “office” applications, virus protection and access to printers Building 1, Level 3 PROJECT TEAMS 21 – 26 Located Building 1, Level 3 Type of user: High Number of users: 8 per team (48 users in total) Applications used: Email, Web, Compiling Software, Programming Software, Testing Software, Project Management Software, File sharing, Intranet, general “office” applications, virus protection and access to printers Files & data produced by the Project Teams require high storage levels, backup and access restriction. This group is a priority group. PROJECT SUPPORT Located Building 1, Level 3 Type of user: Standard Number of users: 2 Applications used: Email, Web, Project Management Software, File sharing, Intranet, general “office” applications, virus protection and access to printers Name & SID Page 11 Assignment 2 Expected Functionality Management have indicated the following application requirements; ï‚· Finance will move away from an installed general ledger package to a cloud based general ledger package in the next 6 months. ï‚· CRM software used by Sales; currently an installed software package, will move to a cloud based package in the next 12 months. ï‚· Video conferencing and VOIP would be desirable ï‚· Disaster recover requirements should be addressed Application Summary Mandatory Desirable Wish list File server – File Sharing of standard office files for all depts. Cloud based General Ledger Video Conference facilities in the meeting rooms, both buildings Mail server – email Cloud based Project Management Fast access BN between buildings Web server – Intranet External access Upgraded disaster recover options VOIP Database server – Graphics Database Finance Database Sales Database Human Resources Database Intranet back end Project management server – Project files, code, software Virus protectio
n & security Backup method Name & SID Page 12 Assignment 2 Storage The nature of the company means that in general a great deal of storage of files is needed. Software being developed in iterative stages requires a lot of storage. The majority of employees fall within the software development group. Marketing also produces large files, coloured graphics based files and require more storage than those users typically producing smaller files associated with standard packages such as Word PowerPoint, Excel for day to day processes. While Sales currently store client and lead generation data, as noted, management will be considering the move to a cloud based Customer Relationship Management software, potentially reducing storage requirements. In addition, management are considering a similar move for the Finance team and their General Ledger software. A cloud based option would reduce file generation and storage requirements. Name & SID Page 13 Assignment 2 3.2 CAPACITY ESTIMATION Computer Dynamics has standard business hours of 8.30am to 5.30pm Monday to Friday. Terminology: Heavy User: means users run capacity hungry applications, in addition may also have high printing requirements Standard User: means normal “vanilla” applications are used, non-excessive amounts capacity or of printer activity User communities Community 1: Project Teams (208 employees), PC users There are 26 project teams, forming the majority of users on the network. Each team has access to the same applications (listed in previous section). This user community occupies all of level 2 and 3 in both buildings. 5 teams are also located on level 1 of building 2. Teams share information. Type of user: Heavy Typical daily usage patterns of this community:  Each day the teams have scrum meetings for 45 minutes from 9.00am to 9.45am as part of standard project management practice.  Heavy usage occurs due to programming, compiling and testing between 10am and 12.30pm.  Usage subsides between 12.30pm and 2.30pm due to staggered lunch breaks.  Peak periods of email and web traffic are most obvious for this group between 2.30pm and 3pm.  Application traffic increases again between 3pm and 5pm Community 2: Information Technology Services (6 employees), Laptop users There are 6 ITS employees; ITS manager, team leader and 4 help desk consultants. Applications available to ITS (listed in previous section). This user community occupies part of building 1, level 1 Name & SID Page 14 Assignment 2 and part of building 2, level 1. These teams share information. Type of user: Heavy Typical daily usage patterns of this community:  Between 8.30am and 10.30am high usage attending to network issues and help desk tickets  11.00am to 12.00pm web and email usage increase  Usage slightly reduced between 12.30pm and 2.30pm due to staggered lunch breaks.  Peak periods of email and web traffic are most obvious for this group between 3.30pm and 4pm.  Application traffic increases again between 4pm and 6pm Community 3: Finance Group (9 employees), PC users The company has 9 Finance employees; CFO, Finance Manager, Analyst and 6 assistant accountants. Applications available to Finance (listed in previous section). This user community occupies part of building 1, level 1. Type of user: Heavy Typical daily usage patterns of this community:  Between 8.30am and 12.30pm high usage with web, email and General Ledger & Payroll updates.  12.30pm to 1.00pm web and email usage increase  Usage reduced between 1.00pm and 2.30pm due to staggered lunch breaks.  Peak periods of email and web traffic are most obvious for this group between 2.30pm and 3pm.  Application traffic increases again between 3pm and 5pm with further General Ledger updates, reporting, database access and general file management. Community 4: Implementation Consultants (10 employees), Laptop Users The company has 10 Implementation consultants. Applications available to Implementation Consultants (listed in previous section). This user community occupies part of building 1, level 1. Consultants spend a significant amount of time on site with clients and accessing the office remotely. These team members are able to VPN into the office from external locations. Type of user: Heavy Typical daily usage patterns of this community:  Between 8.30am and 9.30am consultants in the office will meet to discuss current projects. Name & SID Page 15 Assignment 2  From 9.30am – 12.30pm high usage with web, email and test environment server.  Usage reduced between 1.00pm and 2.00pm due to typical lunch breaks.  Heavy periods of network traffic for this group is evident from 2.00pm to 6.00pm Community 5: Marketing (4 employees), PC Users The company has 4 marketing employees; Manager and 3 officers. Applications available to Marketing (listed in previous section). This user community occupies part of building 1, level 1. Desktop Publishing, graphics database and printing is used significantly in this group Type of user: Heavy Typical daily usage patterns of this community:  From 9.30am – 1.00pm high usage with web, email and marketing applications.  Usage reduced between 1.00pm and 2.00pm due to typical lunch breaks.  Heavy periods of network traffic for this group is evident from 2.00pm to 4.30pm Community 6: Graphics Specialists (25 employees), PC Users The company has 25 graphics and modelling specialists. Applications available to Graphics group (listed in previous section). This user community occupies part of building 1, level 2. Graphics database, graphics and multimedia software is used significantly in this group Type of user: Heavy Typical daily usage patterns of this community:  From 9.30am – 12.30pm high usage with web, email and graphics applications.  Usage reduced between 12.30pm and 2.00pm due to typical lunch breaks.  Heavy periods of network traffic for this group is evident from 2.30pm to 4.30pm Community 7: All other communities (29 employees) Type of user: Standard For simplicity all other communities consist of: Building 2 1. CEO + Admin, 2 employees, building 2, level 1 2. Sales, 8 employees, building 2, level 1 3. Legal, 1 employee, building 2, level 1 4. Receptionists, 2 employees, building 2, level 1 Name & SID Page 16 Assignment 2 5. Project Support, 3 employees, building 2, levels 2 & 3 6. Quality Assurance, 2 employees, building 2, level 1 Building 1 7. Head of Software Development + 2 Analysts + 1 Admin, 4 employees, building 1, level 1 8. Human Resources, 2 employees, building 1, level 1 9. Project Support, 5 employees, building 1, levels 1, 2 & 3 Applications for the groups within this final community are listed in the previous section however, the nature of the usage patterns is very similar for these groups, hence grouping into 1 community. Each of these groups are standard (not heavy) capacity user groups. Typical daily usage patterns of this community:  From 9.00am to 10.00am high usage with web, email  From 10.00am to 11.30am database access, general file sharing.  Usage reduced between 12.30pm and 2.00pm due to typical lunch breaks.  Increased network traffic for this community is evident from 2.00pm to 3.30pm  Lower levels are seen 3.30pm to 5.00pm Usage Patterns The peak load usage patterns of all user communities in a typical work day can be seen below: Note that the network is running at or near full capacity during at least 6 out of the 10 hours in a typical work day. Name & SID Page 17 Assignment 2 This chart supports the fact that the network(s) are currently overloaded and experiencing bottlenecks in either circuits or servers (or other devices). This problem is addressed in the proposed network section. 4. CURRENT NETWORK 4.1 CIRCUITS/CABLING In the previous upgrade two years ago, the ITS manager chose Category 6 cabling with a view to making subsequent upgrades to faster networking technology, simpler and more cost effective. The majority o
f users in the current network are desktop users, the desktops have Gigabit network interfaces. The current network cabling is Category 6 Twisted Pair Ethernet cabling, connecting to Ethernet network switches. The switches are capable of Gigabit connectivity. Cat6 Ethernet cable is commonly used as it offers scalability. The choice of Cat6 Twisted Pair Ethernet intended to run at Gigabit speeds meant that the cabling, network cards and network switches needed to be aligned with this choice of cabling. The previous ITS manager understood that the majority of users, the software engineers (project teams) would require fast application response even with large amounts of data transmission, which is supported by this wiring choice. Within each of the two buildings, network segments that have high bandwidth utilisation requirements and low latency currently run at Gigabit speeds. Other high priority groups such as Marketing, Finance and the Implementation Consultants also benefit from this network infrastructure design more so than groups such as Administration or Sales who do not run applications with these requirements. Refer to Logical Network Diagrams (Appendix B,) to identify high and low requirement network segments Name & SID Page 18 Assignment 2 4.2 HARDWARE (USER & NETWORK) Standard user: refers to a machine that does not provide high end processing power, high resolution video quality or large RAM capacity. Heavy user: (typically software developers, marketing, implementation consultants, finance) refers to a machine that can support high end application requirements. This machine will have ample RAM capacity and a fast processor. USER Standard User/Desktop Operating System: Windows 7 Professional, 64bit Network card: 10/100/1000 (Gigabit) Memory: 4Gb CPU: i5 HDD: 250Gb SATA These specs provide suitable memory and performance capacity as well as allowing the machine to work on faster networks in future. Heavy User/Desktop (Graphics Team, Project Teams, Finance, Marketing) Operating System: Windows 7 Professional, 64bit Network card: 10/100/1000 Gigabit Graphics card: GPU accelerated dual port video card Memory: 32Gb CPU: i7 HDD: 250Gb SSD (scratch disk (Kingsley Night, 2012) Dual monitors (needed for working with more than one application and comparing data) Heavy User/Laptop (Implementation Consultants, Management) Operating System: Windows 7 Professional, 64bit Network card: 10/100/1000 Gigabit Memory: 8Gb CPU: i7 Name & SID Page 19 Assignment 2 HDD: 128GB SSD (quick boot and operation). Hard drive has enterprise level built in encryption features in case of theft. (Dell, 2013) Backlit keyboard Built in webcam for videoconferencing Built in WWAN card (to insert a SIM for mobility, mobile broadband especially Implementation Consultants as they are out of the office regularly. Docking stations at workstations, these allow an external monitor to be used at same time as laptop display. NETWORK Switches Managed, Layer 2 switches exist throughout the entire network. The previous network manager chose to invest in switches rather than hubs, as switches are more efficient in forwarding data between specific network devices, making the best use of the bandwidth available. (Fitzgerald et al. 2012). The previous network manager chose layer 2 switches because this was the most affordable technology available at the time, they were easy to deploy and since each building only had one /24 subnet, it meant no routing in the LAN so no need for the expense of Layer 3 switching. The switches also utilise the SNMP protocol, using an agent that collects diagnostic “information about itself and the messages it processes” (Fitzgerald et al., 2012 p427) to monitor performance. The current network manager runs Solarwinds Network Management software, allowing him to retrieve and evaluate diagnostic information from the switches. (Solarwinds 2013) Firewall/Router A SonicWALL NSA 240 Router is used in both buildings. It terminates the internet connection in each office. There is a site to site VPN tunnel between the two devices, connected over the internet. The SonicWALL is the default gateway (router) in each office that routes traffic either to the internet or between offices and acts as the firewall between LAN and WAN. This device also enables VPN tunnels for telecommuters (Implementation Consultants) to connect to the office as necessary. (See Appendix E) Name & SID Page 20 Assignment 2 Servers Domain Controller (runs DHCP and DNS functions) (Building 2) all users File Server: (Building 2) 141 users Web application server (intranet) (Building 1) all users Database server (Building 1) all users Microsoft Exchange (Mail) + Shared folders (File Server) + Shared printers (Print Server) on the one physical machine (Building 1) all users Total: 5 4.3 SOFTWARE USERS Applications Programmers (Project Teams 1 – 26, 208 users) use Microsoft Visual Studio 2012. The product allows programming, scheduling, debugging, agile project management capability. The applications runs on Windows. Project Teams 1-26 also run Microsoft Project 2012 as their project management software. The application runs on Windows. Adobe Creative Suite 6 is used by the Graphics Team (25 users). The application contains numerous graphics tools including Photoshop, Dreamweaver, Illustrator and Flash Professional. The application runs on Windows. (Adobe 2013) MYOB Account Right Plus is used by the Finance team for its finance management, reporting and payroll functions. The application runs on windows. As more projects are won, the finance team recognises the need for a more sophisticated product and are considering a cloud based option with more licences and functionality. (MYOB 2013) Name & SID Page 21 Assignment 2 Sales & Marketing use Microsoft Dynamics CRM 2011. A multi user licence software, on premises designed to track Customer Relationship Management, leads, sales and marketing activities. (Microsoft 2013) The package integrates with Microsoft Outlook, currently used by organisation as their email software. Sales and Marketing are considering changing to a cloud based application in the near future. Members of the Marketing team also have access to Adobe Creative Suite 6. Each of the applications above is compatible with the existing choice of operating system software: Microsoft’s Windows 7. (Microsoft 2013) The products perform satisfactorily with the exception of MYOB and Microsoft Dynamics, which are now not meeting the needs of the organisation in these two departments. Human Resources utilise a web based software: ConnX. It provides an online Employee Services Portal, talent management, recruitment, management reporting. Since it is web based there are no performance issues related to the software and very little down time. ConnX is a Microsoft certified partner. (ConnX 2013) ITS uses a helpdesk software: OTRS 3.2.6 an Open Source, licence free Help Desk/Ticket Management software. It is a mature, proven product with paid support options and add-ons, carrying less risk than other Open Source products new to market. For network monitoring ITS uses SolarWinds. (OTRS 2013) www.solarwinds.com Client Software: all client machines currently run Windows 7 professional as their operating system, which includes network operating software itself. (p206) Security Software: Both Server & Client machines run ESET Endpoint Antivirus version 5.0 (ESET 2013) Name & SID Page 22 Assignment 2 NETWORK Servers: A network operating system enables access to common files, printer sharing, database sharing, application sharing as well as management of network name directories, security, and other maintenance aspects of a network. (Fitzgerald et al. 2012. p206). The Network Operating System for the Servers is a mix of Windows 2000 and 2003 There are currently performance and stability issues, refer to analysis of network section. 4.4 CURRENT NETWORK LAYOUT In both buildings LANs on each individual floor run on layer 2 switches, wired Ethernet at 1000Bt (Gigabit) using category 6 cabling. The cables are concealed in the ceiling and under shielded
strips on the floor. On each floor of each building the layer 2 switches connect to each other via a dedicated port, which forms the backbone connection. The switches are in a locked wiring closet on each floor. On level one of Building two is the data centre. This houses a layer 2 switch, Domain Controller server (physical machine) and the File server (physical machine) and a SonicWALL Router/ Firewall. The File server is used to store and share files among the all the relevant users in Building two. The Domain Controller runs the DNS and DHCP services Both the Domain Controller and the File Server are connected to the Layer 2 switch. The SonicWALL Router/Firewall’s LAN port is also connected to the Layer 2 switch and is the default gateway for that network. Building two has its own internet connection connected to the WAN port of the SonicWALL Building two has to retrieve and utilise the services of the servers located in Building one. Currently this is achieved by communicating with Building one via a site to site intranet VPN tunnel. (Fitzgerald et al. 2012) Name & SID Page 23 Assignment 2 Building one, uses the same cascading layer 2 switch backbone concept as Building two. (all switches connected between floors). On level 1 of Building one is the data centre. The data centre contains: Layer 2 switch, SonicWALL Router/Firewall Web application server Database server Microsoft Exchange + Shared folders (File Server) + shared printers (Print Server) on the one physical machine. Building one has its own internet connection. All users on each floor of both buildings have access to printers (networked) as well as copiers. 4.5 ANALYSIS OF EXISTING NETWORK In both buildings, the existing cascading Layer 2 switch design means that high impact users, particularly in Building two cause slow responses and poor application performance for all users. This is because as the backbone connection/cable makes its way progressively down to the server on the ground floor, more and more users compete for bandwidth and response from the server. For those users in Building two who require resources located on the servers in Building one, (a significant number of them) this problem is compounded by the limited bandwidth and high latency of the site to site VPN tunnel. Network utilisation is high causing application errors and poor performance. In terms of software; Windows Server 2000 and 2003 have been superseded by new versions of operating system software. Compatibility issues are present as client applications require later versions of the Windows server operating system. Regarding user application software; the current finance and sales tools are no longer providing the required functionality for growth and future strategies of the company. Name & SID Page 24 Assignment 2 As seen in the peak load diagram for usage patterns, the network is at or near capacity six out of the ten hours in a typical work day. The amount of heavy application software used by the large number of developers, the graphics specialists, marketing and finance along with the shared files, backbone design and server capacity is straining the overall network. The combination of roles of the servers in Building one was originally used to conserve space and to conserve cost (of purchasing multiple machines). However as the network and the company has grown this architecture is exhibiting stability, performance and compatibility issues. With the presence of physical servers, there becomes a question around business continuity/disaster recovery and how to protect the servers and the data. The standalone domain controller in Building two is functional but the file server in Building two is lacking in memory and power. The layer 2 switches and SonicWALL Router/Firewall are functional. 5. PROPOSED NETWORK Goals: The existing network is no longer accommodating the needs of users as the organisation grows. For the business to remain professional and competitive the network needs to be faster, capable of storing and retrieving more data in a timelier manner, utilise shared resources much more efficiently and needs to provide a secure, stable and scalable service. A physical core layer is required to interconnect the two buildings. Many employees in building two are part of the software development department, sharing resources located in building one. This department produces the main product of the organisation. This product output needs to be a priority. While an investment in the network will be required, there should be consideration for making use of existing infrastructure where possible. The proposed network should consider disaster recovery requirements in line with business growth. Name & SID Page 25 Assignment 2 5.1 PROPOSED NETWORK – CIRCUITS The existing network runs category 6 cable, this will remain. Suggested circuit changes for proposed network: Installation of Optical Fiber between building one and building two, to replace the existing site to site VPN tunnel. The buildings are approximately 40metres apart, allowing for connection to data centres, length of proposed Fiber should be approximately 50metres. Costs will include the installation cost (building to building) and the cable cost itself. (other costs involve hardware, see next section) Justification/Cost benefit; the cost of Fibre installation and VPN replacement can be justified as follows: The dedicated fiber link between buildings one and two will mean network resource sharing efficiency is increased. (Murphy 2009) It will also impact disaster recover (discussed later). Reliability and resource sharing efficiency, as outlined in the proposed network goals, is important because the main product that the company produces is its software. Development teams in both buildings need to exchange and store information at high speed to perform efficiently and increase productivity, the current VPN structure does not lend itself to the required level of efficiency. Note also that more projects are being won as the company grows, so requirement will increase not decrease. In addition all other departments particularly ITS, Marketing, Implementation Consultants and management need continuous reliable communication and information exchange between buildings and other departments. The introduction of fibre to the data centre will mean that Gigabit Ethernet can be introduced into the backbone in each building. (see Hardware section for more detail on required switches and interconnect switches). As a result, this will boost bandwidth to 10GB between floors. The existing cable within both buildings is the necessary standard to support Gigabit Ethernet, saving on re-cabling costs. As noted in Section 4.1, network interfaces on current user hardware are Gigabit capable, no additional costs are incurred in this respect. Support standard for Gigabit Ethernet is 802.3ae Name & SID Page 26 Assignment 2 5.2 PROPOSED NETWORK – HARDWARE The current network users layer 2 switches throughout. These will be replaced both on the access layer and distribution layer (backbone). Suggested hardware changes for proposed network: Layer 3 switches, with more ports (48 + 24) will replaces the layer 2 switches on each floor of each building. (Should support SFP – see below). In the data centre of both buildings, (i.e. on level 1) the layer 3 switch connected to the backbone (see above) should communicate with the fiber connection. To achieve this, an SFP module will be required between the switch (the interconnect switch) and the fibre connection. With each new layer 3 switch an additional SFP module will be required, to connect all switches between floors. An additional layer 3 switch will be needed in the data centre of building one (on Level 1) Two additional high end servers will be required to perform server virtualisation (see Software section) and disaster recovery functions. Basic specifications of the two new servers are suggested as: Model: HP Dl380 G7 Memory: 80GB Storage capacity: 2TB Operating System (for each separate logical server): Windows Server 2012 Virtual Operating System: VMWare VSphere
® (VMWare 2013) (www.hp.com. www.vmware.com). Name & SID Page 27 Assignment 2 All existing server functions will be moved to one of the high end servers acting as a VMWare Host, located in the building one data centre The second high end server will be located in building two and will act as a disaster recovery server. Making the most of the fiber connection, the data on the main server in building one will be replicated to the disaster recovery server in building two throughout the day. This means at any time, if required, there is a recovery option. If issues occur, the interconnectivity between buildings, means that with the support of IT users can utilise the disaster recovery machine in building two without changes to the network. Justification/Cost Benefit: At present the number of ports on the layer 2 switches do not offer scalability based on the number of employees in the company and based on future projected growth. Additional switches will provide for growth in employee numbers of up to 40% and allow for additional devices if necessary. The cost of layer 3 equipment is falling as it is becoming more widely used. The introduction of layer 3 switches enables improved overall performance by harnessing the capacity introduced via the new fiber optic connection. (See section 5.1 Proposed Circuits). Ongoing, it is expected this technology will boost productivity. Additional switches provide overall scalability. The cost of the two new high end servers is justified by addressing the disaster recovery requirements (a proposed network goal) and the reduction of running costs in both buildings. The cost of the SFP modules are justified since they utilise connection to the fiber. 5.3 PROPOSED NETWORK – SOFTWARE The user and client applications within the existing infrastructure will not be changed. However it is noted that management have said that the current CRM software and Finance software are no longer adequate. The following are suggested: CRM Software and Finance software can be replaced with a cloud based option from a single vendor. Name & SID Page 28 Assignment 2 NetSuite, specifically NetSuite Financials and SalesForce, two very mature products. The cloud based platform reduces local file storage requirements, software version management and simply utilises an internet browser. (NetSuite 2013) Further, these two applications are completely integrated so that sales data can be pushed to financial data seamlessly. The justification for the licence fees and implementation costs for this solution is: ï‚· the reduced IT effort costs (management, deployment, upgrades, server space) ï‚· automation of processes and information between the two key departments ï‚· the products are integrated ï‚· licencing approach provides scalability Server Software: The two new servers (see hardware section) will require the following: VMWare Sphere as a virtual operating system. Windows Server 2012 Justification/Cost Benefit: The cost of the software and licence fees for Windows 2012 can be justified by the fact that the solution offers disaster recovery, previously unavailable in the current network. This is outlined as one of the goals for the new network. In addition the virtualisation of the servers means avoiding underutilisation of servers, reduced running costs, power and energy and cooling. (Fitzgerald et al. 2012). Overall efficient usage provides ongoing operating cost savings to the organisation. 5.4 PROPOSED NETWORK LAYOUT The proposed network will use layer 3 Ethernet switches for Gigabit Ethernet in the backbone (distribution) and access layers. The switches will be stacked and connected using SFP modules to take full advantage of the Fiber Optic connection between buildings. (See below) Patch panels will be used on each floor. Category 6 cabling is used in the distribution layer and network segments. Name & SID Page 29 Assignment 2 The core layer utilises Fiber Optic cable providing 10GbE with layer 3 switching at both connecting ends (the interconnect devices – i.e. Level 1 in both buildings). The data centre in building two will be no longer be required, the primary data centre will become the centre in building one. As there are more than 254 users, two subnets will be required, one in each building. VLAN capability will be utilised so that performance can be improved, through traffic prioritisation. Server virtualisation will be utilised in the main data centre, utilising a newly acquired higher performance server. An additional high end server for disaster recovery will be located in building two. Justification: The introduction of layer 3 switches for the backbone and fiber optic for the core layers improves data transfer speed, information sharing, efficiency and potentially productivity as opposed to the existing VPN connection between two buildings. The investment in the switches and fiber will be recouped in terms of productivity and output of the organisations main product: software. With the introduction of layer 3 switches on the backbone, the creation of more than one subnet is possible, enabling message traffic control and a more efficient network. (Fitzgerald et al, 2012). The current structure did not utilise this approach. Performance is improved through the use of VLANs since high impact users are affecting the performance of all users, by causing high utilisation on switches. VLANs will isolate these high impact users away from other segments on the LAN. (Fitzgerald et al. 2012). As outlined in the goals of the proposed network, improved performance of the network is a key factor. The current VPN approach between the two buildings is inefficient as data and effort is duplicated in the servers in each building. For this reason, relocating the data centre to one building and improving server performance is proposed as an alternative. The newly acquired high end servers will reduce the need for multiple machines and reduce overall operating costs. (energy, cooling). Name & SID Page 30 Assignment 2 As a network goal, disaster recovery is addressed in the proposed network location by locating a second high performance server to building two. The replication of data throughout the day provides the opportunity to recover if the main server encounters any issues. This also supports the move to fiber which has the capacity to ensure that this ongoing daily data transfer is fast and ensures copied data is as current as possible (reducing overall loss potential, the need for re-work and lost productivity). 6. CONCLUSIONS The findings of the report are as follows: Network utilisation is high causing application errors and overall poor performance. The nature of the company is such that the heavy applications used for software production are not suited to a poorly performing network. The network is not adequate for growth. There is no physical connection between the two buildings occupied by the organisation. Both buildings are currently sharing information across a VPN site to site tunnel. The current VPN approach between the two buildings is inefficient as data and effort is duplicated in the servers in each building. The tunnel provides limited bandwidth and high latency. There are software compatibility issues on servers. Some existing user applications (Finance and Sales) are no longer adequate. There is currently no disaster recovery opportunity in place for company data. 7. RECOMMENDATIONS  Replacement of the existing VPN tunnel structure with an investment in a Fiber Optic core layer between buildings one and two. Reduce existing latency and bandwidth imposed limitations to improve total network performance Name & SID Page 31 Assignment 2  Replace layer 2 switches with layer 3 switches to provide Gigabit Ethernet on network segments and provide additional capacity for growth (scalability). Improve network traffic management and control. Devices are managed and enable the introduction of VLAN segmentation, prioritising traffic as required.  Replace multiple servers with two high end servers (one in each building). Reduce storage issues, reduce software compatibili
ty issues. Provide disaster recovery mechanism.  VPN connectivity for employees requiring mobility is maintained as VPN connection through SonicWALL router/firewall and internet connection will continue  Invest in cloud based Finance and Sales software to provide an integrated solution for both departments while alleviating storage and software management burdens on ITS. The investments outlined above meet the goals of the proposed network namely:  A robust network that performs quickly, enhancing communication and data exchange throughout the entire organisation. This supports productivity and return on investment by creating an environment where the organisation can be efficient and remain competitive  Safety of important company data via replication to additional server  Adequate storage for near and medium term needs  Utilises existing cabling, user hardware (including NICs), saves on operating costs (energy, cooling)  Allows necessary employees to maintain mobility via VPN connection while out of the office  Empowers ITS staff to manage network traffic and performance more efficiently  Is fully scalable as necessary through further investment in additional switches as and when required Page 32 Assignment 2 LIST OF REFERENCES Adobe, Products FAQ, Viewed 3rd September 2013 Connx, Connx HR Brochure, Viewed 3rd September 2013 ESET, ESET Business Solutions, Viewed 3rd September 2013 FOA, Guide to Fiber Optics and premises cabling, Viewed 1st September 2013 Fitzgerald J, Dennis A & Durcikova A, 2012, Business Data Communications and Networking, 11th Edition. John Wiley and Sons Inc., United States of America Microsoft, Microsoft Dynamics CRM, Viewed 3rd September 2013 Microsoft, Visual Studio Edition, Viewed 3rd September 2013 Murphy, D 2009, ‘Upgrade to Gigabit networking for better performance’, PCWorld, 5 October, Viewed 1 September 2013 MYOB, AccountRightLivePlus, Viewed 3rd September 2013 NetSuite, NetSuite cloud connect for salesforce.com, Viewed 1st September 2013 Page 33 Assignment 2 OTRS, ‘A flexible help desk and IT-Service management software’, Viewed 3rd September 2013 Solarwinds, Solarwinds IT Management Glossary, Viewed 3rd September 2013 VMWare, Virtualisation, Viewed 1st September2013 Page 34 Assignment 2 Bibliography AFCGroup, Tech talk GPON optical LAN solutions, Viewed 28 August 2013 Cisco, Fibre channel over Ethernet (FCoE), Viewed 28 August 2013 EMC 2011, “Introduction to fibre channel over Ethernet (FCoE)” – A detailed review”, Viewed 27 August 2013 Lynn J &, Grahamster T, ‘How to upgrade your network to Gigabit Ethernet’, WikiHow, n.d., Viewed 27 August 2013 Netgear 2010, “10 things to know before deploying 10 Gigabit Ethernet”, Viewed 26 August 2013 Page I Assignment 2 APPENDIX A: ORGANISATIONAL CHART COMPUTER DYNAMICS Organisational Chart: Computer Dynamics II Assignment 2 APPENDIX B: LOGICAL NETWORK DIAGRAMS CURRENT NETWORK Indicates high bandwidth utilisation/low latency requirement network segment Indicates normal bandwidth utilisation network segment Mandatory Applications: File server : file sharing Exchange Server: email DB Server: databases Print Server: print requests Future: Video conference in meeting room Upgraded Financial software Upgraded Sales/CRM software VOIP Building 1, Level 1 Total users: 50 Facilities: Printer, Fax, Copier Networked printer shared by all users on floor connected to 16 port switch Project Team 10, Power Desktops 8 users connected to 48 port layer 2 switch Project Team 11, Power Desktops 8 users connected to 48 port layer 2 switch Project Team 12, Power Desktops 8 users connected to 48 port layer 2 switch Meeting Data Centre Bldg. 1 Project Support, Standard Desktops 1 user, connected to 16 port layer 2 switch 100Mbps ITS, Power Laptops 3 users connected to 16 port layer 2 switch Head of Software Development + Support + 2 Analysts, Standard Desktops 4 users, connected to 16 port layer 2 switch Human Resources, Standard Desktops 2 users, connected to 16 port layer 2 switch Project Team 13, Power Desktops 8 users connected to 48 port layer 2 switch Project Team 14, Power Desktops 8 users connected to 48 port layer 2 switch Storage, Switch 100 Mbps , Router, Firewall, Database server, Web App Server, Exchange+File+Print server III Assignment 2 Building 1, Level 2 Total users: 50Wiring ClosetProject Team 17, Power Desktops8 usersconnected to 48 port layer 2 switchProject Team 18, Power Desktops8 usersconnected to 48 port layer 2 switchProject Team 10, Power Desktops8 usersconnected to 48 port layer 2 switch 100MbpsProject Team 20, Power Desktops8 usersconnected to 16 port layer 2 switchProject Team 15, Power Desktops8 usersconnected to 48 port layer 2 switchProject Team 16, Power Desktops8 usersconnected to 48 port layer 2 switchProject Support, Standard Desktops2 usersconnected to 24 port layer 2 switch 100MbpsFacilities: Printer, Fax, CopierNetworked printer shared by all users on floor connected to 16 port switch IV Assignment 2 Building 1, Level 3 Total users: 50Project Admin, Standard Desktops2 usersconnected to 16 port layer 2 switch 100MbpsNetworked printer shared by all users on floor connected to 16 port switch 100MbpsProject Team 22, Power Desktops8 usersconnected to 48 port layer 2 switchProject Team 23, Power Desktops8 usersconnected to 48 port layer 2 switchProject Team 24, Power Desktops8 usersconnected to 48 port layer 2 switchProject Team 25, Power Desktops8 usersconnected to 48 port layer 2 switchMeetingWiring ClosetProject Team 21, Power Desktops8 usersconnected to 48 port layer 2 switchProject Team 25, Power Desktops8 usersconnected to 16 port layer 2 switch V Assignment 2 Building 2, Level 1Total Users: 41Meeting RoomsFacilities: Networked Printer. Shared by all users on floor. Connected to 48 port switch., Copier, FaxSales: 8 users, Standard Desktops, Connected to 16 port layer 2 switch 100MbpsCEO + Admin: 2 users, Power Laptops, Connected to 16 port layer 2 switchITS: 3 users, Power Laptops, Connected to 48 port, layer 2 switchReception: 2 users, Standard Desktops, Connected to 16 port layer 2 switchQA & Legal: 3 users, Standard Desktops, Connected to 16 port layer 2 switchServer RoomDomain Controller (DNS/DHCP), File ServerMarketing: 4 users, Power Desktops, Connected to 48 port, layer 2 switchImplementation Consultants: 10 users, Power Laptops, Connected to 48 port, layer 2 switchFinance: 9 users, Power Desktops, Connected to 48 port, layer 2 switch 100Mbps VI Assignment 2 Building 2, Level 2Total users: 50Meeting RoomsFacilities: Printer, Fax, CopierProject Team 1, Power Desktops8 usersconnected to 24 port layer 2 switch 100MbpsProject Team 2, Power Desktops8 usersconnected to 24 port layer 2 switchProject Team 3, Power Desktops8 usersconnected to 24 port layer 2 switchGraphics Specialist Team Power Desktops25 Usersconnected to 48 port layer 2 switchProject Admin, Standard Desktops 1 usersconnected to 48 port layer 2 switch 100MbpsNetworked printer shared by all users on floor connected to 48 port switchWiring closet VI Assignment 2 IX Assignment 2 Building 2, Level 3 (50 users) Meeting Rooms Facilities: Printer, Fax, Copier Project Team 8, Power Desktops 8 users connected to 16 port layer 2 switch Project Team 7, Power Desktops 8 users connected to 48 port layer 2 switch Project Team 6, Power Desktops 8 users connected to 48 port layer 2 switch Project Team 5,Power Desktops 8 users connected to 48 port layer 2 switch Project Team 9, Power Desktops 8 users connected to 48 port layer 2 switch 100Mbps Project Team 4, Power Desktops 8 users connected to 48 port layer 2 switch Project Support, Standard Desktops 2 users connected to 16 port layer 2 switch Wiring Closet Networked printer shared by all users on floor connected to 16 port switch IX Assignment 2 APPENDIX C: PHYSICAL NETWORK DIAGRAM CURRENT NETWORK (BUILDING 1) Building 1 Level 3 Building 1 Level 2 Building 1 Level 1 Sonic Router/ Firewall Layer 2 Switch Layer 2 Switch Layer 2 Switch Layer 2 Switch Web app server Dbase Server Layer 2 Switch Layer 2 Switch Layer 2 Swi
tch Layer 2 Switch Layer 2 Switch Cat 6/ 100Mbps Heavy traffic segment Heavy traffic segment Heavy traffic segment Heavy traffic segment Heavy traffic segment To Internet VPN to Bldg. 2 Distribution layer Cat 6/ 100Mbps Cat 6/ 100Mbps Cat 6/ 100Mbps Cat 6/ 100Mbps Data Centre Exchange+File+Print sever Symbol Description Building 1 Legend Virtual server Cloud Layer 2 switch Server Firewall Switch Printer Router Laptop PC IX Assignment 2 APPENDIX C: PHYSICAL NETWORK DIAGRAM CURRENT NETWORK (BUILDING 2) Building 2 Level 3 Building 2 Level 2 Building 2 Level 1 Sonic Router/ Firewall Layer 2 Switch Layer 2 Switch Layer 2 Switch Layer 2 Switch File Server Domain Controller Layer 2 Switch Layer 2 Switch Layer 2 Switch Layer 2 Switch Layer 2 Switch Cat 6/ 100Mbps Heavy traffic segment Heavy traffic segment Heavy traffic segment Heavy traffic segment Heavy traffic segment To Internet VPN to Bldg. 1 Distribution layer Cat 6/ 100Mbps Cat 6/ 100Mbps Cat 6/ 100Mbps Cat 6/ 100Mbps Symbol Description Building 2 Legend Server Backbone Switch File server Router Firewall Cloud Layer 2 switch PC Printer Laptop XVII Assignment 2 APPENDIX D: PHYSICAL NETWORK DIAGRAM PROPOSED NETWORK (BUILDING 1) Building 1 Level 3 (50 users) Building 1 Level 2 (50 users) Building 1 Level 1 (50 users) To Internet High End VMWare Server Stacked Layer 3 switches 48 + 24 10GBASE-T. Patch Panel Cat 6/ 10GBaseT Heavy traffic segment Heavy traffic segment Sonic Router/Firewall Layer 3 Switch Fiber Optic To Building 2 VLAN ID 20 Cat 6/ 10GBaseT Stacked Layer 3 switches 48 + 24 10GBASE-T Patch Panel VLAN ID 20 VLAN ID 20 VLAN ID 20 VLAN ID 10 VLAN ID 10 VLAN ID 20 Cat 6/ 10GBaseT Cat 6/ 10GBaseT SFP module SFP module Cat 6/ Data Centre SFP module 10GBaseT VLAN ID 10 VLAN ID 10 VLAN ID 10 VLAN ID 20 VLAN ID 20 VLAN ID 20 VLAN ID 20 Cat 6/ 10GBaseT Cat 6/ 10GBaseT Symbol Description Legend Subtitle Legend Cloud Patch Panel Server Firewall Switch Printer Fiber Optic Router PC XVII Assignment 2 APPENDIX D: PHYSICAL NETWORK DIAGRAM PROPOSED NETWORK (BUILDING 2) Building 2 Level 3 (50 users)Building 2 Level 2 (50 users)Building 2 Level 1 (41 users)Disaster Recovery ServerStacked Layer 3 switches 48 + 24 10GBASE-T.Patch PanelCat 6/10GBaseTHeavy traffic segmentHeavy traffic segmentLayer 3 SwitchFiber OpticTo Building 1VLAN ID 20Cat 6/10GBaseTStacked Layer 3 switches 48 + 24 10GBASE-TPatch PanelVLAN ID 20VLAN ID 20VLAN ID 20VLAN ID 10VLAN ID 10VLAN ID 20Cat 6/10GBaseTCat 6/10GBaseTSFP moduleSFP moduleData CentreCat 6/10GBaseTSFP moduleVLAN ID 10VLAN ID 10VLAN ID 10VLAN ID 20VLAN ID 20VLAN ID 20VLAN ID 20Cat 6/10GBaseTCat 6/10GBaseTSymbolDescriptionLegend SubtitleLegendCloudPatch PanelServerFirewallSwitchPrinterFiber OpticRouterPC XVII Assignment 2 APPENDIX E: TOPOLOGY In both the current and the proposed network the logical topology is a Star as pictured below. This is because the design is a switched based Ethernet approach. The switch at the centre manages (is connected to) the sets of separate point to point circuits (Fitzgerald et al. 2012 p208). The advantage with this approach is that the circuit connecting the switch and the device does not need to be shared. Ideally this will allow the circuit to realise its full potential. In both the current and proposed network the physical topology is a Star. This topology accurately represents the current and proposed network because the way the network is physically installed is replicated below, that is; each device is connected to a switch. Physical topology: Star (switched Ethernet) Logical topology: Star (switched Ethernet) XVII Assignment 2 APPENDIX F: LOGICAL NETWORK DIAGRAMS PROPOSED NETWORK Because the configuration of employees and floors have not changed with the proposed network, for simplicity only one diagram representing one floor is provided. Building 1, Level 3 Total users: 50Project Admin, Standard Desktops2 usersconnected to 24 port layer3 switch 10GBASET VLAN ID10Networked printer shared by all users on floor connected to 24 port layer 3 switch 10GBASET VLAN ID10Project Team 22, Power Desktops8 usersconnected to 48 port layer 3 switch10GBASE-TVLAN ID 20Project Team 23, Power Desktops8 usersconnected to 48 port layer 3 switch10GBASETVLAN ID 20Project Team 24, Power Desktops8 usersconnected to 48 port layer 3 switch10GBASET VLAN ID20Project Team 25, Power Desktops8 usersconnected to 48 port layer 3 switch 10GBASET VLAN ID20MeetingWiring ClosetProject Team 21, Power Desktops8 usersconnected to 48 port layer 3 switch 10 GBASET VLAN ID20Project Team 25, Power Desktops8 usersconnected to 48 port layer 3 switch 10GBASET VLAN ID 20 XVII Assignment 2 XVII Assignment 2 APPENDIX E EQUIPMENT & COSTS Firewall hardware detail http://www.sonicwallsecure.com/sonicwall-nsa-240 (www.sonicwallsecure.com) XVII Assignment 2 Switches Layer 3 http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps5023/prod_brochure0900aecd803ca7c6.pdf (www.cisco.com) XVII Assignment 2 COSTS Switches Layer 3 Stackable (24 port) Switches Layer 3 Stackable (48 port) SFP Modules Servers Software XVII Assignment 2 XVII Assignment 2 Fibre Optic Installation: Prices & vendors vary: http://www.fixtel.com.au/fibre-optics-installations-and-maintenance/ ISPs Fiber Costs: Prices and Vendors vary Cost Summary (estimates only) excludes Fiber Optic installation and ongoing fees General Cost Summary Switches $ 42945 SFP $ 800 Servers (including extra storage) $ 13000 Software $ 6347 ITS staff time (5 days: manager at $90/ph Support staff @ $35 p/h) $ 5775 $68867 Comment: It is possible to purchase certified refurbished switching equipment at considerably lower costs. Fiber Installation and ongoing costs are not included in this estimate as price & vendors vary. Separate quotations would be required. Costs average to around $ 13K per year over 5 years (Excl. install and ongoing fees) The benefits of this are upfront investment will be noticeable immediately through raised productivity. The benefits through scalability and efficiency will be ongoing.

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