Transcript Network Management Principles and Protocols

Network Management
Principles and Protocols
Presented by:
Mohsen Kahani
[email protected]
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
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Inventory management

Network topology services
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Service-level agreement
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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
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Availability, Response time, Accuracy
• Efficiency-oriented indicators
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
Throughput,Utilization
Performance monitoring
• Monitoring against the indicator
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Thresholding and exception reporting
Analysis and tuning
Establishing operational standards
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Security Management

Risk Analysis

Protecting the Managed Objects
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Authentication Procedures

Maintenance of Access Control Routines

Management of Keys for Encipherment

Maintenance of Authorization Facilities
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Maintenace of Security Logs

Protecting the NMS
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Accounting Management

Identification of cost components

Establishing change-back policies
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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
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Web-based Approach
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SNMP
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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
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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
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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
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SNMP PDU’s

get-request

get-next-request

get-response

set-request

trap
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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
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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
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
An Important Framework for Management of
Telecommunication Networks
A Host of Management Functions and Communications
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Operation
Administration
Maintenance
Provision
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Chosen By Telco’s for Managing WANs
Enables Communication between Operations System(OSs) and
Network Elements(NEs) Via a Data Communications
Network(DCN)
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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)
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Using Web as an Interface paradigm
• Bay Networks’ Optivity Web
• Computer Associate’s
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
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Web-based management is becoming a strong
player in the field
Thank You For Listening
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