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Tij3103 topic01 nm


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Tij3103 topic01 nm

  1. 1. TOPIC ONE (1)Introduction & Network Management Background TIJ3103 – Network Management A071 1
  2. 2. Lesson Objectives • After finish this chapter, you’ll be able to understand: • The importance of NM for the organization • NM definition • NM objective & functions • NM model TIJ3103 – Network Management A071
  3. 3. Outline • Introduction & importance of NM • NM definition • NM objectives & functions • Role of NE • NM model • NM protocol • NM platform • NM application • NMS TIJ3103 – Network Management A071
  4. 4. Introduction • WHY NM important? • to ensure the successful of the operation for any network. • Objective! • Combine all the network devices in order full control could be done. • WHY NM is critical in a network field? • Heterogeneous network & multi-vendor products. TIJ3103 – Network Management A071
  5. 5. WHY NM Important?• Host centric & homogeneous ~ host computer or mainframe manage the network.• Currently, network expands without limitation such as in LAN, MAN, WAN.• Different technology, application, protocol, topology and standards from multi-vendor make it difficult to manage the network. TIJ3103 – Network Management A071
  6. 6. What is NM?• IEEE Standard 802.6 ~ “NM provides mechanisms for the monitoring, control, and coordination of all managed objects within the physical layer and DLL of a node”.• Divakara K. Udupa ~ “monitoring and controlling the resources of computers, the resources used in the connection and communication of computers, and the applications used in the computers”.• Butler Cox Foundation ~ “The set of activities required to plan, install, monitor and maintain all network components in order to achieve specified service levels reliably, at an acceptable and an agreed cost”. TIJ3103 – Network Management A071
  7. 7. Definition • A set of activities such as planning, installing, monitoring, controlling, maintaining, all network components in order to achieve specified service levels reliably, at an acceptable and an agreed cost. TIJ3103 – Network Management A071
  8. 8. NM Objectives• Higher network availability• Reduce network operational costs• Reduce network bottlenecks• Increase flexibility of operation and integration• Higher efficiency• Ease of use• Security TIJ3103 – Network Management A071
  9. 9. NM Functions• Day-to-day functions • Control and maintain SLAs • User support • Fault, configuration, performance, security and accounting management.• Planning Functions • Tactical planning & design • Cost control • Policy and connection with vendors TIJ3103 – Network Management A071
  10. 10. Network Engineer (NE) • NE responsible for:- • Installing, maintaining, controlling and troubleshoot network • Ensuring information & data being sent through network are consistent, accurate, fast, and economical according to customer needs. • NMS helps NE in complex networks so that it becomes more eficient and transparent to the users. TIJ3103 – Network Management A071
  11. 11. NE Role• Plan, design & analyze• Build• Maintain, direct & control• Expand• Optimize• Troubleshoot & testing• staffing• Writing report TIJ3103 – Network Management A071
  12. 12. NE Role (cont…) • Plan, design & analyze • Network’s main objective ~ organization & customer needs and satisfactions • NE needs to develop a comrehensive plan including all network criterias. • When developing plan, NE will analyze user community. • Design will include additional tools and equipment to provide new route and back-up if fault happens or adding bandwidth. • For planning, activities involved include develop objectives, schedule, budget, policy and procedures. TIJ3103 – Network Management A071
  13. 13. NE Role (cont…) • Build • With the help of network plan, NE will decide the connection and the needs of hardware and software required. • Xtvt involves include develop organization structure, delegation, procedure for integration among organizations. TIJ3103 – Network Management A071
  14. 14. NE Role (cont…) • Maintain, direct & control • After building network, NE needs to maintain and monitor the network, eventhough it has been taking care during implementation of the network since, softwares and hardware may be failed and need to be updated. • Directing also needed to ensure the xtvt, decision making, communication and motivation are successful. • Control also needed to build, measure, evaluate and correcting performance so that it become a standard performance. TIJ3103 – Network Management A071
  15. 15. NE Role (cont…) • Expand • Changes in users’ need will affect the overall network plan. • Usually, existing network will be expanded instead of redesigning and building an entirely new one. • NE needs to apply the correct networking solution to accommodate these changes. TIJ3103 – Network Management A071
  16. 16. NE Role (cont…) • Optimize • NE need to plan carefully to ensure each device can operate when it required so that organization can achieve optimum network performance. (under-utilize) • Each device need to be configured carefully using requried parameters settings so that the use of network can achieve optimum performance but not over the limit. (over-utilize) TIJ3103 – Network Management A071
  17. 17. NE Role (cont…) • Troubleshoot & testing • Network troubles still exist eventhough network is built in care. • NE needs to control errors and faults from time to time to reduce the network problems. • NE needs to solve the problems by doing some testings, recording errors, changing the parameters & schedule, coordination, changing softwares, hardwares or circuits. TIJ3103 – Network Management A071
  18. 18. NE Role (cont…) • staffing • Xtvt involves such as interviewing, choosing and training staffs. • One NE is not enough to manage the network in an organization, thus, supporting staffs are required to help NE in daily work (i.e. system analyst, programmer, technical staff, OMPD etc.) TIJ3103 – Network Management A071
  19. 19. NE Role (cont…) • Writing report • NE is responsible for providing basic information about status, reports and network documentation. • Network status is part of the organization and control should be monitored so that network can be access continuosly. • Incomplete network reports will give problems to organization when deciding to expand the network or for future needs. • Network documentation is important to manage network and use for the future. TIJ3103 – Network Management A071
  20. 20. NM Model• ISO divides NM into 5 functional areas: i. Fault management (kerosakan/ralat) ii. Configuration management (konfigurasi/perubahan) iii. Security management (keselamatan) iv. Performance management (prestasi) v. Accounting management (perakaunan) TIJ3103 – Network Management A071
  21. 21. Fault Management• Process of locating problems, or faults on the data network.• It involves: • Discover the problem • Isolate the problem • Fix the problem (if possible)• Adv: with NMS, NE can locate & solve problems more quickly. TIJ3103 – Network Management A071
  22. 22. Configuration Mgmt • The configuration of certain network devices controls the behavior of the network. • Conf. Mgt is a process of finding the network data in the organization and use this data to reconfigure or to set up the network devices. • It is the fundamental aspects for NM because fault, performance, security and accounting mgt is dependent or supported by the details in the configuration mgt. TIJ3103 – Network Management A071
  23. 23. Security Mgmt• Process of controlling access to information on the network for authorized users only.• Some information stored by computers attached to the network may be inappropriate for all users to view.• It provides the methods to control access point and provide audit trails as well as alarm if violation of attempted or actual breaches of security. TIJ3103 – Network Management A071
  24. 24. Performance Mgmt• Involves the measuring the performance of network hardware, software and media such as: • Throughput • Percentage utilization • Error rates • Response time• The objective is to ensure that the network will have the capacity to accommodate the users’ needs. TIJ3103 – Network Management A071
  25. 25. Accounting Mgmt• It involves: • Tracking each individual and group user’s utilization of network resources to: • Better ensure that users have sufficient resources • Determine cost and bill users • Giving and taking back the network access privilege to the users. TIJ3103 – Network Management A071
  26. 26. NM Protocol• A protocol is a set of rules that governs the aspects of communication and networking.• NM protocols are needed to access the information from the network device.• NM protocol can be simple, complexes or advance. TIJ3103 – Network Management A071
  27. 27. NM Protocol (cont…) • Simple NM protocol would define common data formats and parameters and allow for easy retrieval of information. • Complex NM protocol would add some change capability and a security mechanism to protect the information requested and to prevent anyone from making the changes. • Advance NM protocol would be able to remotely execute NM tasks for all network devices. TIJ3103 – Network Management A071
  28. 28. Example of NM Protocol • SNMP (Simple Network Management Protocol) • SNMPv2, SNMPv3. • CMIS/CMIP (Common Management Information Services / Common Management Information Protocol) TIJ3103 – Network Management A071
  29. 29. NM Protocol Technology• SNMP is a bit beyond the simple tool, with adequate monitoring and some change capabilities.• SNMPv2 and SNMPv3 enhance the SNMP feature set.• CMIS/CMIP approaches the advance tool, but implementation issues have limited its use.• NM protocols simply give methods to monitor and configure network devices. It is a key point in the development of NM applications. TIJ3103 – Network Management A071
  30. 30. NM Platform• A software package that provides the basic functionality of NM for many different network components.• It is needed because NM involved in different systems and vendors, and each one manage only one specific device in the network.• Each vendor develop different system from others such as modems, hubs, routers, multiplexers, and other network components. TIJ3103 – Network Management A071
  31. 31. NM Platform (cont…) • In order these different systems integrate to each other, therefore, NM platform is needed. • The goal of the NM platform is to provide generic functionality for managing a variety of network devices. TIJ3103 – Network Management A071
  32. 32. NM Platform Features • Graphical user interface • Network map • Database management system • Standard method to query device • Customizable menu system • Graphing tools • Application programming interface • System security TIJ3103 – Network Management A071
  33. 33. NM Platform Features (cont…) • Graphical user interface • GUI is useful for giving the user easier access to the features of the platform. • Standard GUI should conform to a common look- and-feel standard. • By using a standard GUI, the platform will behave in a manner that is documented and conformed by different vendors. • If all vendors build their applications using a common look-and-feel, it makes the system easier to use an manipulate. • Example: Microsoft Windows, OSF Motif, Sun MicroSystem Open Look. TIJ3103 – Network Management A071
  34. 34. NM Platform Features (cont…) • Network map • Network map is important in NM because it can show the connection between devices (hardware, software, media) physically or logically. • Fault mgt tools can show what cause the erros by using the colors in mapping. • Configuration mgt tools can show the physical and logical configration of the network pictorially. • Added benefits are: autodiscovery (automatically discover the devices in the network), automapping (draw the network graphically) TIJ3103 – Network Management A071
  35. 35. NM Platform Features (cont…) • Database management system • It helps in many network mgt tasks. • Applications can use the database for information storage. • Relationships can be built between data items, which help in network diagnosis and maintenance. • DBMS allow users to generate customized reports and perform automated backup. TIJ3103 – Network Management A071
  36. 36. NM Platform Features (cont…) • Standard method to query device • Important because the platform can gather the information from different network tools by different vendors. • NE can query each component to get the information through platform and the use of that data. TIJ3103 – Network Management A071
  37. 37. NM Platform Features (cont…) • Customizable menu system • Menus in platform NM can be changed and designed according to the needs of user. • Through the customizable menu system, NE tasks can be done consistently. • Menus by specific network tools or by vendors can be made upon required and this will make NE easier to manage the device. TIJ3103 – Network Management A071
  38. 38. NM Platform Features (cont…) • Graphing tools • NM platform should give NE the ability to produce graphs, such as line, bar, pie, column chart of data. • Also the ability to merge graphs into reports is beneficial since it is easy to see information represented on a graph instead of raw data or text reports. • Graphs of current network traffic and errors can help in fault and performance mgt, and graphs of historical data help isolate network trends. TIJ3103 – Network Management A071
  39. 39. NM Platform Features (cont…) • Application programming interface • API is a library of programming procedures and functions allowing access to information kept within the NM platform. • It is important because: it allows for integration of vendor applications, and it allows NE to write custom programs for their environments. • Only through the API can external programs use the network map, integrate into the menu system, store and retrieve information from the database, send message to the event log etc. TIJ3103 – Network Management A071
  40. 40. NM Platform Features (cont…) • System security • NM platform and apllications contain a wealth information about the network, the configuration of the device, network and applications security, performance and accounting methods. • This information should be protected and can be accessed by network cracker or unauthorized user. • The security for the platform must be additional to that provided by the OS. TIJ3103 – Network Management A071
  41. 41. NM Applications • NM Platform provides generic functionality for all managed devices. • NM applications is designed to help NE to manage a specific set of devices or services. • NM applications are developed by network vendors to help customers manage their devices. TIJ3103 – Network Management A071
  42. 42. Relationship between platformand application. Vendor 1 Vendor 2 Vendor X Applications ……. Platform TIJ3103 – Network Management A071
  43. 43. Goals of NM Applications • Effectively manage a specific set of devices • Avoid functionality overlap with the platform • Integrate with a platform through the API and menu system • Reside on multiple platform TIJ3103 – Network Management A071
  44. 44. Goals of NM Application (cont…) • Effectively manage a specific set of devices • A hub manufacturer could build an application that shows the physical connectors on the hub when a user selects the hub on the network map. • This application could allow the user to configure features of the hub, turn ports on or off, or monitor error rates and throughput. • This application could help accomplish configuration and performance management tasks for the hub. TIJ3103 – Network Management A071
  45. 45. Goals of NM Application (cont…) • Avoid functionality overlap with the platform • NM applications strive not to incorporate functionality that overlaps with the platform. • Overlap would result in multiple ways to to accomplish the same result on the platform, perhaps providing a confusing interface for the user. • Also, producing features that exist on the platform could be waste of development effort for the application developers. • When the platforms does not provide a feature that application needs, application will add those features. • i.e. Pie graphs is not provided in platform, application may provide the features. TIJ3103 – Network Management A071
  46. 46. Goals of NM Application (cont…) • Integrate with a platform through the API and menu system • This allows the user to view the applications and platforms as one uniform NMS. • API allows for a programmatic interface to the platform. • The menu system allows for the invocation of application programs from the same menu system the users sees on the platform. TIJ3103 – Network Management A071
  47. 47. Goals of NM Application (cont…) • Reside on multiple platform • Application that is available only on a single platform forces the NE to use this platform for NM tasks. • This is not an ideal situation because the single platform may not have the necessary features or support other needed applications. TIJ3103 – Network Management A071
  48. 48. Network Mgt System• NMS is built from two (2) major components: • Platform • Applications• Platform ~ A software package that provides the basic functionality of NM for many different network components (HP OpenView)• Application ~ developed by vendors to help NE manage a specific set of devices or services (3COm  hub) TIJ3103 – Network Management A071
  49. 49. Choosing NMS• Perform device inventory• Prioritize the functional areas of NM• Survey NM applications• Choose the NM platform• In order (“Tertib”) TIJ3103 – Network Management A071
  50. 50. Choosing NMS (cont…)• Perform device inventory • Identify hardware, software, circuit in the network • Discover whether each of the devices is manageable by any NM protocols either standard or proprietary • Prioritize the mission-critical devices • Managing mail-server is more important than printer server. TIJ3103 – Network Management A071
  51. 51. Choosing NMS (cont…)• Prioritize the functional areas of NM • In many cases, the most important areas of NM is fault mgt. • However, some organization could require security mgt or configuration mgt take first priority. • This step is essential because we need to be able to pick the most important NM applications for the devices. TIJ3103 – Network Management A071
  52. 52. Choosing NMS (cont…)• Survey NM Applications • Find NM applications that help perform our key areas of NM for the devices. • NM applications help to accomplish the functional areas of NM because without the applications, we have only the generic functionality of the NM platform. • Using applications designed to manage the devices allow us to spend resources actively in managing the network. TIJ3103 – Network Management A071
  53. 53. Choosing NMS (cont…)• Choose the NM platform • Ideally, the applications selected work on at least one common platform. • If they work together on only one platform, the choice is straightforward. • If there are many choices of platforms, we should choose the one with the architecture that closely resembles the way our organization plans to manage the network. (centralized, distributed, hierarchical) • Another criteria when selecting a platform is the hardware available to run the software on. TIJ3103 – Network Management A071
  54. 54. Choosing NMS (cont…)• In order • In choosing NMS, organization tends to perform these steps out of order. • Many times selection of the NM platform comes first; only later it is discovered that there are no applications that run on the platform to manage the important devices on the network. • Follow the steps in order, so the NMS works well for the network and organization. TIJ3103 – Network Management A071
  55. 55. Review• Introduction & importance of NM• NM definition• NM objectives & functions• Role of NE• NM model• NM protocol• NM platform• NM application• NMS TIJ3103 – Network Management A071