NETWORK MANAGEMENT PROF. ALTAF BALSING, Asst . Professor Department: B.E. EXTC Engineering

1. NETWORK MANAGEMENT PROF. ALTAF BALSING, Asst. Professor Department: B.E. EXTC Engineering Subject: Telecomm. Network Managment Semester: VIII Service By KRRC (Central Library)

2. Network Management :

3. Introduction • Network Management : Managing Computer Networks ANetwork Management System (NMS)is used to design, organize, analyze and administercomputer and telecommunication networks, in order to maintain a desired level of service at all times.

4. Centrally Managed Network Issues

5. Centrally Managed Network Issues Illustrate several issues related to network design, configuration, & maintenance. Each Element Management System (EMS) records and displays the receipt time of the alarm, The same is transmitted to the Integrated NMS (INMS). The alarm occurrence time was considerably delayed , sometimes by hours, in INMS. The challenge in a centrally managed network is to find, the root cause of the problem.

6. Centrally Managed Network Issues Is it network delay? Is the delay due to excessive number of events? Is it due to input/output (I/O) limitation of the input port of the INMS? Is it due to output port of EMS? Is it in the software of either EMS or INMS or both? If it is in the INMS Software, should the filtering of the unnecessary events at the input take care of the problem?

7. Centrally Managed Network Issues The predominant cause is the stress on NMS’s.

8. Some Common Network Problems Loss of connectivity Duplicate IP address Intermittent problems Network configuration issues Performance problems

9. Challenges of IT Managers What you will do when you becomes an IT Manager in a company ? ? ? ?

10. Network Management :it’s a big challenge to manage a Network as a Manager.

11. Challenges of IT Managers CEO Co-Founder of Facebook. as of December 2015, his wealth is estimated to be $46 billion Zuckerberg receives a one-dollar salary as CEO of Facebook advancing human potential and promoting equality

12. Challenges of IT Managers • Achieving a Stretch Goal • motivate people • organization’s people and resources to achieve an aggressive goal • Bringing Out the Best in Your Employees • Dealing with Underperforming Employees

13. Challenges of IT Managers Dealing with Outstanding Employees Hiring the Right People Responding to a Crisis Continuous Improvement

14. Challenges of IT Managers ConclusionManagement is complicated. It requires skill and motivation. But most of all it requires commitment — the commitment needed to rise to these challenges.

15. Challenges of IT Managers • Reliability, consistency well, trustworthy • Non-real time problems • Rapid technological advance • Managing client/server environment • Scalability , size & scale • Troubleshooting tools and systems • Trouble prediction • Standardization of operations - NMS helps • Centralized management

16. Network Management : Stanford students put computer science skills to social good 4 undergraduates have co-founded CS+Social Good, an organization that utilizes technology to make a positive social impact. "How can we use technology to make the world a better place?"

17. Network Management (OAMP) • Network Management can be defined as (OAMP) of network and services. • Operations, • Administration, • Maintenance, & • Provisioning • The goal of NM is to ensure that the user of network are provided IT Service with a QoS that they expect.

18. Network Management (OAMP) The Operation group is concerned with daily operations in providing network services. The Network Administrator: establishing and administering overall goals, policies, & procedure of network management. The installation & Maintenance(I&M): Handles installation & repairs of facilities & equipments. Provisions involves network planning & circuit provisioning , traditionally handled by engineering & Provisioning dept.

19. Network Management (OAMP)

20. NM Functional Flow Chart

21. Dumbbell Architecture

22. Dumbbell Architecture Message exchange between NMSs managing different domains

23. NM Components

24. Interoperability

25. Interoperability Message exchange between NMSs managing different domains

26. Network Management Perspectives • Network Management • Service Management • Service and Network Provisioning • Application Management • e-Commerce Management • Inventory Management • Integrated Management • Business Management • Information Management • Management Protocols • Management Technologies

27. Infrastructure Perspective • Domains • Protocols • Technologies • Transmission Media • Transmission Modes • Service Functions

28. Service Perspective • Communication Services • Computing Services • Content Services • IT Services • Application Services

29. Status and Future Trends • Status: • SNMP management • Limited CMIP management • Operations systems • Polled systems • Current Focus: • Object-oriented approach • Service and policy management • Business management • Web-based client management • Future Trends • Web-based management? • XML based management

30. Network Management Architecture:

31. Network Management Architecture: A managing device, called a management station, or a manager and the managed devices, called management agents or simply an agent. A management station serves as the interface between the human network manager and the network management system. It is also the platform for management applications to perform management functions through interactions with the management agents. The management agent responds to the requests from the management station and also provides the management station with unsolicited information.

32. NM Architecture

33. NM Functional Areas Configuration Management Fault Management Performance Management Security Management Accounting Management

34. Configuration Management Inventory management Network topology services Service-level agreement Designing, implementing and processing trouble tickets Order processing and provisioning Change management Directory services

35. Configuration Management

36. Fault Management

37. Fault Management Issues • Alarm Correlation • Trouble Ticketing System • Expert System Application

38. Performance Management • Definition of performance indicators • Service-oriented indicators • Availability, Response time, Accuracy • Efficiency-oriented indicators • Throughput,Utilization • Performance monitoring • Monitoring against the indicator • Thresholding and exception reporting • Analysis and tuning • Establishing operational standards

39. Security Management Risk Analysis Protecting the Managed Objects Authentication Procedures Maintenance of Access Control Routines Management of Keys for Encipherment Maintenance of Authorization Facilities Maintenace of Security Logs Protecting the NMS

40. Accounting Management Identification of cost components Establishing change-back policies Definition of charge-back procesdures Processing vendor bills Integration of Network accounting into corporate accounting policy

41. NM Standards • Simple Network Management Protocol • SNMP V1, V2, V3 • OSI Model • Object-based approach • TMN Model • Just a framework for network management systems • Web-based Approach

42. SNMP • Management Information Base (MIB) • Virtual Information Store of MOs • Information are stored at MOs using different approaches • MIB II added a number of useful variables • Structure of Management Information (SMI) • Framework fot the Definition of SNMP MIBs • Object Information Model for Network Management • Formal Description of the Structure are Given Using a Subset of ASN.1 • Abstract Syntax Notation 1 (ASN.1) • A Standard Object Definition Language • A Standard Way to Encode Objects for Transfer Over a Network • It’s Large,Complex,and not Especially Efficient

43. SNMP PDU’s get-request get-next-request get-response set-request trap get-bulk-request inform-request

44. SNMP Versions • SNMP v1 • Designed to be an interim solution • No security consideration • Not efficient • SNMP v2 • Authentication of the Message Source • Protecting Messages from Disclosure • Placing Access Control on MIBs • Multiple Request Problem solved • Traps Have the Same Format as Other PDUs • 2 New Operations • Much Layers and More Complex • SNMP v3 • Built Upon the Two First Versions of SNMP • Additional Security and Administrative Capabilities

45. OSI Architecture

46. TMN • An Important Framework for Management of Telecommunication Networks • A Host of Management Functions and Communications • Operation • Administration • Maintenance • Provision • Chosen By Telco’s for Managing WANs • Enables Communication between Operations System(OSs) andNetwork Elements(NEs)Via aData Communications Network(DCN) • Base for ATM network management

47. TMN Architecture

48. Web-based Approaches • Bay Networks’ Optivity Web • Computer Associate’s Unicenter TNG • WNMS • Using HTTP instead of SNMP • Web-Based Enterprise Management (WBEM) • Java Management API (JMAPI) • Using Web as an Interface paradigm

49. Conclusion Network management is critical for big networks The principle of network management was discussed Some network management standards were explained Web-based management is becoming a strong player in the field Thank You For Listening

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