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Data Communications - Chapter twelve

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Data Communications - Chapter twelve

  1. 1. Network Management <ul><li>After studying this Chapter you should: </li></ul><ul><ul><li>Describe what is required to manage the day-to-day operations of networks </li></ul></ul><ul><ul><li>Explain network management organization </li></ul></ul><ul><ul><li>Describe </li></ul></ul><ul><ul><ul><li>configuration management </li></ul></ul></ul><ul><ul><ul><li>performance and fault management </li></ul></ul></ul><ul><ul><ul><li>cost management </li></ul></ul></ul><ul><ul><li>Describe the role and functions of network management software and hardware tools </li></ul></ul>
  2. 2. Introduction <ul><li>Network Management - the process of operating, monitoring and controlling the network to ensure it operates as intended and provides value to its users. </li></ul><ul><ul><li>CATER to the needs of the user </li></ul></ul><ul><ul><ul><li>Consistent </li></ul></ul></ul><ul><ul><ul><li>Accurate </li></ul></ul></ul><ul><ul><ul><li>Timely </li></ul></ul></ul><ul><ul><ul><li>Economically feasible </li></ul></ul></ul><ul><ul><ul><li>Relevant </li></ul></ul></ul>
  3. 3. What are the primary network management functions ? <ul><li>Design and implement new networks and network upgrades </li></ul><ul><li>Manage the day-to-day operation of existing networks </li></ul>
  4. 4. What is the importance of network management? <ul><li>Communications networks contribute to the bottom line </li></ul><ul><li>Communications networks can be strategic competitive tools </li></ul><ul><li>Effective network management results in availability, reliability, and efficiency </li></ul><ul><li>Network management is both the brain and heart of the corporate communications network </li></ul>To the corporation...
  5. 5. What is the importance of network management? <ul><li>Communications network management is a large and rapidly expanding business </li></ul><ul><li>Network management offerings is a key factor when firms make decisions including: </li></ul><ul><ul><li>public versus private network </li></ul></ul><ul><ul><li>carrier-based versus CPE -based ( C ustomer P remises E quipment) </li></ul></ul><ul><li>Reputation as a good network management provider helps sell other products/services </li></ul>To the network/product/service provider...
  6. 6. What are the network management needs ? <ul><li>Network management should contribute to the bottom line : </li></ul><ul><ul><li>Decrease expense </li></ul></ul><ul><ul><li>Increase revenue </li></ul></ul><ul><ul><li>Increase productivity </li></ul></ul><ul><ul><li>Improve service </li></ul></ul><ul><ul><li>Provide image as a leading edge company </li></ul></ul><ul><li>Network management should provide the company with a strategic competitive tool </li></ul>As Perceived by the Corporate Executive...
  7. 7. What are the network management needs ? <ul><li>Provide good performance </li></ul><ul><li>Be easy to operate and correct problems </li></ul><ul><li>Be flexible and provide customer control </li></ul><ul><li>Work in a multi-supplier environment </li></ul><ul><li>Be well utilized and adaptive for growth </li></ul><ul><li>Provide for management reporting capabilities </li></ul>As Perceived by the Communications Manager...
  8. 8. What are the network management needs ? <ul><li>Provide good performance </li></ul><ul><li>Be transparent and easy to use </li></ul><ul><li>Provide for a one-stop, responsive help desk </li></ul><ul><li>Be cost effective </li></ul>As Perceived by the End User...
  9. 9. The Shift to LANs and the Web <ul><li>60% of all processing power is done on LANs </li></ul><ul><li>Growing 40% per year </li></ul><ul><li>Web services growing even more dramatically </li></ul><ul><li>Integration </li></ul><ul><ul><li>mixing technologies & protocols - requires expertise and equipment </li></ul></ul><ul><ul><li>cultural - management and user </li></ul></ul>
  10. 10. Integrating LANs, WANs & the Web <ul><li>Communication and Cooperation </li></ul><ul><ul><li>shift in power </li></ul></ul><ul><ul><li>organizational impact </li></ul></ul><ul><ul><li>single communications and networking goal </li></ul></ul><ul><li>Data communications network organization </li></ul><ul><ul><li>written charter </li></ul></ul><ul><ul><ul><li>purpose </li></ul></ul></ul><ul><ul><ul><li>operational philosophy </li></ul></ul></ul><ul><ul><ul><li>long-range goals </li></ul></ul></ul><ul><ul><li>Goals policies procedures </li></ul></ul>
  11. 11. Integrating Voice and Data <ul><li>Why </li></ul><ul><ul><li>changing communications technologies </li></ul></ul><ul><ul><li>high cost of maintaining separate facilities </li></ul></ul><ul><ul><li>low efficiency and productivity </li></ul></ul><ul><li>Roadblocks </li></ul><ul><ul><li>loss of jobs </li></ul></ul><ul><ul><li>loss of power </li></ul></ul><ul><ul><li>political pressures </li></ul></ul>
  12. 12. Network Management Functions Less More Real-time Orientation Corporate Network Management Admini- stration Mgmt Capacity Mgmt Provisioning Mgmt Accounting Mgmt Perfor- mance Mgmt Configura- tion Mgmt Fault Mgmt Security Mgmt
  13. 13. <ul><li>Equipment Inventory </li></ul><ul><li>Corporate Directory </li></ul><ul><li>Database Administration </li></ul><ul><li>Management Reports </li></ul>Network Management Functions Corporate Network Management Admini- stration Mgmt Capacity Mgmt Provisioning Mgmt Accounting Mgmt Perfor- mance Mgmt Configura- tion Mgmt Fault Mgmt Security Mgmt
  14. 14. <ul><li>Demand Forecasting </li></ul><ul><li>Network Design (Chapter 10) </li></ul><ul><li>Network Engineering (Chapter 10) </li></ul>Network Management Functions Corporate Network Management Admini- stration Mgmt Capacity Mgmt Provisioning Mgmt Accounting Mgmt Perfor- mance Mgmt Configura- tion Mgmt Fault Mgmt Security Mgmt
  15. 15. <ul><li>Ordering </li></ul><ul><li>Installation (Moves, Adds, Changes) </li></ul><ul><li>Pre-service Testing </li></ul>Network Management Functions Corporate Network Management Admini- stration Mgmt Capacity Mgmt Provisioning Mgmt Accounting Mgmt Perfor- mance Mgmt Configura- tion Mgmt Fault Mgmt Security Mgmt
  16. 16. <ul><li>Traffic Usage Recording </li></ul><ul><li>Billing </li></ul><ul><li>Cost Management </li></ul>Network Management Functions Corporate Network Management Admini- stration Mgmt Capacity Mgmt Provisioning Mgmt Accounting Mgmt Perfor- mance Mgmt Configura- tion Mgmt Fault Mgmt Security Mgmt
  17. 17. Cost Management <ul><li>Control of continually escalating costs </li></ul><ul><li>Network management staff </li></ul><ul><ul><li>systems management </li></ul></ul><ul><ul><li>end-user support </li></ul></ul><ul><li>WAN circuits </li></ul><ul><li>Hardware </li></ul><ul><ul><li>client computers </li></ul></ul><ul><ul><li>network devices </li></ul></ul><ul><li>Application Software </li></ul>
  18. 18. Network Management Functions Corporate Network Management Admini- stration Mgmt Capacity Mgmt Provisioning Mgmt Accounting Mgmt Perfor- mance Mgmt Configura- tion Mgmt Fault Mgmt Security Mgmt <ul><li>Delays </li></ul><ul><li>Blocking </li></ul><ul><li>Discards </li></ul><ul><li>Errors </li></ul><ul><li>Availability </li></ul><ul><li>Reliability </li></ul>
  19. 19. Performance Management <ul><li>Performance management - ensuring the network is operating as efficiently as possible </li></ul><ul><li>Network monitoring - keeping track of the operation of various network circuits and devices for performance and fault discovery </li></ul><ul><li>Goes hand-in-hand with Fault Management </li></ul>
  20. 20. Network Monitoring <ul><li>Network management software </li></ul><ul><ul><li>operational statistics </li></ul></ul><ul><ul><li>physical network parameters </li></ul></ul><ul><ul><ul><li>network failures </li></ul></ul></ul><ul><ul><ul><li>devices malfunctioning </li></ul></ul></ul><ul><ul><ul><li>devices not responding </li></ul></ul></ul><ul><ul><li>logical network parameters </li></ul></ul><ul><ul><ul><li>performance measures </li></ul></ul></ul><ul><ul><ul><li>response times </li></ul></ul></ul><ul><ul><ul><li>traffic on the circuit </li></ul></ul></ul>
  21. 21. Network Management Tools <ul><li>Network management software </li></ul><ul><ul><li>Previously discussed </li></ul></ul><ul><li>Network management hardware </li></ul><ul><ul><li>Breakout box - voltage meter </li></ul></ul><ul><ul><li>Fiber light meter </li></ul></ul><ul><ul><li>Cable Analyzer </li></ul></ul><ul><ul><li>Protocol Analyzer/Data Line Monitor </li></ul></ul><ul><ul><li>Automated Test Equipment </li></ul></ul>
  22. 22. <ul><li>Network Reconfiguration </li></ul><ul><li>Bandwidth Reallocation </li></ul><ul><li>Traffic Rerouting </li></ul>Network Management Functions Corporate Network Management Admini- stration Mgmt Capacity Mgmt Provisioning Mgmt Accounting Mgmt Perfor- mance Mgmt Configura- tion Mgmt Fault Mgmt Security Mgmt
  23. 23. Configuration Management <ul><li>Managing the network’s hardware and software </li></ul><ul><ul><li>documentation </li></ul></ul><ul><ul><li>hardware and software upgrades </li></ul></ul><ul><ul><li>network diagrams and maps </li></ul></ul><ul><ul><li>circuit diagrams </li></ul></ul><ul><ul><li>software licenses </li></ul></ul><ul><ul><li>hardware and software manuals </li></ul></ul><ul><ul><li>vendor contracts and agreements </li></ul></ul>
  24. 24. Configuration Management. <ul><li>Managing the network’s usage </li></ul><ul><ul><li>user or group accounts </li></ul></ul><ul><ul><li>user or group privileges </li></ul></ul><ul><ul><li>user login scripts </li></ul></ul><ul><ul><li>directory space </li></ul></ul>
  25. 25. Network Management Functions <ul><li>Testing </li></ul><ul><li>Trouble Detection </li></ul><ul><li>Trouble Analysis </li></ul><ul><li>Trouble Resolution </li></ul><ul><li>Trouble Logging </li></ul>Corporate Network Management Admini- stration Mgmt Capacity Mgmt Provisioning Mgmt Accounting Mgmt Perfor- mance Mgmt Configura- tion Mgmt Fault Mgmt Security Mgmt
  26. 26. Fault Management <ul><li>Fault management - preventing, detecting and correcting any faults in the network circuits, hardware, and software </li></ul>
  27. 27. Failure Control <ul><li>Help desk function </li></ul><ul><ul><li>human intervention </li></ul></ul><ul><ul><li>problem reporting </li></ul></ul><ul><ul><li>authority to call other support or vendors as necessary </li></ul></ul><ul><ul><li>problem tracking </li></ul></ul><ul><ul><li>problem statistics </li></ul></ul><ul><ul><li>troubleshooting </li></ul></ul><ul><ul><li>chronic device failures </li></ul></ul>
  28. 28. Testing and Problem Fix <ul><li>Establish test and validity criteria </li></ul><ul><li>Coordinate and administer the various tests </li></ul><ul><li>Quick diagnoses </li></ul><ul><li>Maintain a variety of testing equipment </li></ul><ul><li>Document fix procedure </li></ul><ul><li>Report on problem resolution time </li></ul><ul><li>Record down time and network availability statistics </li></ul>
  29. 29. End User Support <ul><li>Solving whatever problems users encounter while using the network </li></ul><ul><ul><li>Resolving software problems </li></ul></ul><ul><ul><ul><li>lack of user knowledge </li></ul></ul></ul><ul><ul><ul><li>incompatibility between software packages </li></ul></ul></ul><ul><ul><li>Security issues </li></ul></ul><ul><ul><ul><li>incorrect or forgotten passwords </li></ul></ul></ul><ul><ul><ul><li>rights to directories </li></ul></ul></ul>
  30. 30. End User Support <ul><li>Several levels of support </li></ul><ul><ul><li>help desk </li></ul></ul><ul><ul><ul><li>general problems </li></ul></ul></ul><ul><ul><ul><li>75 - 85% solved at this level </li></ul></ul></ul><ul><ul><li>second level </li></ul></ul><ul><ul><ul><li>specialized skills </li></ul></ul></ul><ul><ul><li>third level </li></ul></ul><ul><ul><ul><li>specialists who test and create solutions </li></ul></ul></ul><ul><ul><ul><li>advanced problem solving </li></ul></ul></ul><ul><li>End User Training </li></ul><ul><ul><li>on going process </li></ul></ul>
  31. 31. <ul><li>Chapter 12 </li></ul>Network Management Functions Corporate Network Management Admini- stration Mgmt Capacity Mgmt Provisioning Mgmt Accounting Mgmt Perfor- mance Mgmt Configura- tion Mgmt Fault Mgmt Security Mgmt

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