Network%20Management%20Principles%20and%20Protocols

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Network ManagementPrinciples and Protocols

• Presented by
• Mohsen Kahani
• kahani_at_ferdowsi.um.ac.ir
• Ferdowsi University of Mashhad
• Faculty of Engineering

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Table of Contents

• Introduction
• Network Management Functional Areas
• Fault Management
• Performance Management
• Configuration Management
• Security Management
• Accounting Management
• Network Management Standards
• Simple Network Management Protocol
• OSI Model
• Telecommunication Management Network
• Web-based Approaches
• Conclusion

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Introduction

• Motivation
• A bit of History
• Definition
• A Network Management System (NMS) is used to
  design, organize, analyze and administer
  computer and telecommunication networks, in order
  to maintain a desired level of service at all
  times.

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NM Architecture
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NM Functional Areas

• Configuration Management
• Fault Management
• Performance Management
• Security Management
• Accounting Management

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Configuration Management

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

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Configuration Management
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Fault Management
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Fault Management

• Issues
• Alarm Correlation
• Trouble Ticketing System
• Expert System Application

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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

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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

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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

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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

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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
• Its Large,Complex,and not Especially Efficient

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SNMP PDUs

• get-request
• get-next-request
• get-response
• set-request
• trap
• get-bulk-request
• inform-request

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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

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OSI Architecture
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TMN

• An Important Framework for Management of
  Telecommunication Networks
• A Host of Management Functions and Communications
• Operation
• Administration
• Maintenance
• Provision
• Chosen By Telcos for Managing WANs
• Enables Communication between Operations
  System(OSs) and Network Elements(NEs) Via a Data
  Communications Network(DCN)
• Base for ATM network management

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TMN Architecture
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Web-based Approaches

• Using HTTP instead of SNMP
• Web-Based Enterprise Management (WBEM)
• Java Management API (JMAPI)
• Using Web as an Interface paradigm

• Bay Networks Optivity Web
• Computer Associates Unicenter TNG
• WNMS

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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