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TMN Overview. Telecommunications Management Network Shervin Erfani. Customer 1. Exchange Carrier. Local Carrier. Customer 2. Present Network Management Environment. ?. EMS (?). EMS. NMS. NMS. EMS. SNMP. SNMP. TL1. Proprietary. Terminal Server. Frame Relay

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TMN Overview

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Tmn overview

TMN Overview

Telecommunications Management Network

Shervin Erfani


Present network management environment

Customer 1

Exchange Carrier

Local Carrier

Customer 2

Present Network Management Environment

?

EMS

(?)

EMS

NMS

NMS

EMS

SNMP

SNMP

TL1

Proprietary

Terminal

Server

Frame Relay

Network

T1-Fractional T1

Network

Ring

Router

Router

Host

Ring

  • Multiple vendors, mixed protocols, proprietary interfaces and systems

  • Diverse networks

  • Loosely-organized applications (i.e., gaps and overlaps)

  • Multiple management domains, no clear boundaries and responsibilities

  • Manual interventions and uncommon duplicate data bases


Managing network management

Managing Network Management

  • What is structured approach to NM?

    An organized architecture for a conceptually separate management network to interconnect NMSs & equipment using standardized

    • functions (e.g., FCAPS)

    • Information Models (i.e., MIB)

    • Network Management Protocols (CMIP as base, but SNMP supported)

    • NM expertise and tools (e.g., event correlator; NM m&p)

  • Why is it important?

    • Ability to scale NMSs for large number of devices

    • Support for new technologies, equipment and services

    • Promote flexibility and system integration based on modularity and interoperability

    • Defining a common information model (i.e., an agent MIB)


Tmn overview

Network Management in the TMN Environment

Conceptually Separate Management Network

TMN

Management

System

Management

System

Management

System

Workstation

Data Communication Network (DCN)

Frame

Relay

Terminal

Server

Router

Router

ATM

Telecommunications network

  • Interconnection of service providers and user management infrastructures


Tmn overview

NM Hierarchical Model

Example

Banking Business

  • Business Management Layer (BML)

    • Goal setting, Finance, Budgeting

    • Planning product definition

      .

      .

      .

  • Service Management Layer (SML)

    • Customer contact and interface

    • Quality of Service

    • Interaction between services

      .

      .

      .

  • Network Management Layer (NML)

    • Connectivity among nodes

    • Network control and coordination

    • Network statistical data/reports

      .

      .

      .

  • Element Management Layer (EML)

    • Control of subsets of network elements

    • Gateway access to network elements

    • Maintaining statistical log and events

      .

      .

      .

  • Network Element Layer (NEL)

    • Implementation of management commands

    • Detection of problems

Check Clearing

ATM

SNA

Frame Relay

Network

X.25

EMS for NCR

EMS for Diebold

NCR

Diebold


Tmn overview

Management Function Areas

  • Fault Management

  • Configuration Management

  • Accounting Management

  • Performance Management

  • Security Management

FCAPS

Reference: “TMN Management Functions,” ITU-T, M.3400


Fcaps

Fault Management

Alarm Surveillance

Fault Localization

Fault Correction

Testing

Trouble Administration

Reliability, Availability, & Survivability (RAS) Quality Assurance

Configuration Management

Network Planning & Engineering

Installation

Service Planning & Negotiation

Provisioning

Status & Control

Accounting Management

Tariff/Pricing

Usage Measurement

Collections & Finance

Enterprise Control

Performance Management

Performance Quality Assurance

Performance Monitoring

Performance Management Control

Performance Analysis

Security Management

Prevention

Detection

Containment & Recovery

Security Administration

FCAPS

Reference: ”TMN Management Functions,” ITU-T, M.3400


Tmn overview

F

C

A

P

S

F

C

A

P

S

F

C

A

P

S

F

C

A

P

S

F

C

A

P

S

F

C

A

P

S

F

C

A

P

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P

S

A Total NM Environment

FCAPS

BML

SML

Protocol-based

messages

NML

NM messages

NM messages

Information Model

EML

b

c

d

e

f

(SNMP)

(T7)

(SNMP)

RAS

T1

Mux

T3 Line

Frame Relay

Network

FRAD

e

c

d

b

f

NEL

MIB

  • Logical Layers are implementation-independent

g

a

NM expertise


Tmn overview

NM-Layer Characteristics

  • Lower Layers are Managed by Upper Layers

  • Each Layer manages multiple occurrences of the layer directly below

  • Each layer uses network management functions/services of lower layers

  • An FCAPS application in a layer may communicate with other FCAPS applications in the same layer (e.g., SONET applications may talk to ATM applications)


Tmn overview

Generic NM Architecture

  • Functional Architecture - provides the means to process and transport information

    • Function Blocks (packaging FCAPSs, protocol converters, workstation functions)

    • Reference Points (Conceptual interfaces between Management Systems)

  • Information Architecture - provides an object-oriented approach for management-oriented information exchanges

    • Management Information Model (MIBs)

    • Manager/Agent Relationship

  • Physical Architecture

    • Management System Architecture

    • Interface Realization


Tmn overview

Managing

System

Manager

Management operations (can use CMIP)

Notifications

Agent

Managed objects in MIB

Managed system

….

Resource

Resource

Managed Resources

NM Information Architecture

  • Based on

    • Object-oriented approach for information exchange

    • Allows for object properties to be extended through “inheritance”

    • Manager/Agent concept

    • Allows for hierarchical exchange of management information

  • Perspectives of Management Information

    • The management information model (can use GDMO)

    • Allows for a common data structure in the

    • managed and managing system

    • The management information exchange (can use OSI ASN.1)

    • Allows for standard description of data structures

  • Shared Management Knowledge (SMK) scope

    • Integrated Naming and Addressing Scheme for Objects

    • Human and machine readable

    • Object Classes

      • Allows for extensions to new services/technologies

    • Object Attributes/Services

    • Allows for vendor extensions and options

    • Manager/Agent/Objects Relationships

    • Allows for data abstraction at upper layers


Tmn overview

Where does this take us ?

  • Industry will move ahead with layered architecture (NMSs and EMSs are being developed for SDH/SONET equipment)

  • Network Management will be Platform-Based and use an increasing number of standard objects (mostly technology-based objects)

  • Network Management tools and applications (expertise driven)

  • Distributed applications using client/server computing become more prevalent (TMN is designed for client/server architecture)

  • Customer network management will be integrated into overall network management (Frame relay and ATM forums have developed standard network interfaces to carriers; M3-ATMF; VPN management)

  • SNMP plays a bigger role (OMNIPointfrom “Network Management Forum” (NMF)attempts to encompass both carriers and traditional LAN/WAN management)

  • Reference:

  • “L. Bernstein”, JNSM, vol. 3, no. 1, 1995


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