Chapter 11
Chapter 11
Telecommunications Management
Network
Network Management: Principles and Practice
© Mani Subramanian 2000
11-1
Chapter 11
TMN
• Necessity for interoperability basis for TMN
• Need for management of more than just the
network components
• Networks / subnetworks need to be managed
• Services - internal and external need management
• Business management needs to be addressed
• TMN joint effort by ITU-T and ISO
Notes
Network Management: Principles and Practice
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Chapter 11
OS: Trunk Testing System
Trunk
Test System
Telecommunication Network
Transmission
Test System
Transmission
Test System
Nodes
Voice
Voice
Public Sw itch
Transmission Links
Public Sw itch
Figure 11.1 Operations System for Network Transmission
Notes
• Trunk is a logical connection between two switching
nodes
• Periodic measurement of loss and S/N of all trunks
• Failing threshold set for QoS; failing trunks removed
out of service before the customer complains
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Chapter 11
OS: Telephone Switch Traffic
Traffic
Measurement System
Traffic
Counter
Data / Telecommunication
Network
Traffic
Counter
Nodes
Router / Switch
Transmission Links
Router / Switch
Figure 11.2 Operations System for Traffic Measurement
Notes
• Traffic monitored at switch appearance
• Call blocking statistics obtained
• Traffic and call-blocking statistics provide data
for planning
• Importance of Operations, administration, maintenance, and provisioning
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Chapter 11
TMN Conceptual Model
Telecommunications
Management
Network
Operations
System
NMS
Operations
System
Operations
System
Workstation
Data Communication Network
Switching
System
Transmission
System
Switching
System
Transmission
System
Switching
System
Voice
Voice
Telecommunication Network
Figure 11.3 TMN Relationship to Data and Telecommunication Network
Notes
Network Management: Principles and Practice
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Chapter 11
TMN Conceptual Model
Service provider A
Service provider B
Customers
Customers
Services provided by
Telecommunications
Provider
Services provided by
Telecommunications
Provider
Network
Network
Q3
Operations Systems
Q3
OS
OS
Q3
X
Operations Systems
Q3
OS
OS
F
F
Workstation
Workstation
System Operators
System Operators
Figure 11.4 TMN Conceptual Model
Notes
• Components
• Interfaces
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Chapter 11
TMN Architecture
TMN Architecture
Functional
Architecture
Physical
Architecture
Informational
Architecture
Figure 11.6 TMN Architecture
Notes
• Functional architecture:
• Functional modules or blocks
• Reference points between modules
• Physical architecture:
• Physical blocks
• Physical interfaces between the blocks
• Informational architecture:
• Information exchange between entities
• Object oriented
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Chapter 11
Functional Architecture
TMN B
OSF
x
TMN A
OSF
q3
OSF
f
WSF
q3
q3
MF
qx
NEF
qx
QAF
MF Mediation Function
NEF Network Element Function
OSF Operations Systems Function
QAF Q Adapter Function
WSF Workstation Function
Figure 11.7 TMN Functional Architecture
Notes
• OSF: Functions performed by Operations
systems: e.g., NMS, testing, accounting, trouble
tracking
• NEF: Functions needed to support network
elements;network elements themselves are not
part of TMN: e.g., NM agent, MIB, collision rate
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Chapter 11
Functional Architecture
TMN B
OSF
x
TMN A
OSF
q3
OSF
f
WSF
q3
q3
MF
qx
NEF
qx
QAF
MF Mediation Function
NEF Network Element Function
OSF Operations Systems Function
QAF Q Adapter Function
WSF Workstation Function
Figure 11.7 TMN Functional Architecture
Notes
• MF: Operations on the information between network
elements; e.g. filtering, protocol conversion
• MF can be shared between multiple OSSs;
e.g. RMON
• WSF:Human-TMN activities interface; e.g., GUI
• QAF: Adapter function to accommodate non-TMN
entities; e.g. proxy server, SNMP-to-CMIP
Network Management: Principles and Practice
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Chapter 11
TMN Reference Point
Function Block
Function Block
Reference Point
Figure 11.8 TMN Reference Point
Notes
• Function blocks connected by conceptual
interfaces, called reference point
• Designated by lower case letters (upper case
letter for physical interfaces)
• x: Interface between operations systems that
belong to different domains; e.g., interface between
two NMSs belonging to two different domains
• q3: Interface between two OSFs in the same domain
• qx: Interface between mediation function such as
RMON and agent in the network element
• f: Interface to the workstation
Network Management: Principles and Practice
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Chapter 11
Physical Architecture
Operations
System
(OS)
X
TMN
Operations
System
(OS)
X/F/Q3
Data Communications Network (DCN)
F/Q3
Workstation
F
Mediation
Device
(MD)
Q3
Qx
Q3
Data Communications Network (DCN)
Qx
Q Adapter
(QA)
Network
Element
(NE)
Q Adapter
(QA)
Qx
Network
Element
(NE)
Notes
Network Management: Principles and Practice
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Chapter 11
Information Architecture
Operations / Requests
Manager
Responses
Agent
Notifications / Traps
Figure 11.10 TMN Information Architecture
Notes
Network Management: Principles and Practice
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Chapter 11
Service Architecture
Business Management
q3
Service Management
q3
Network Management
q3
Element Management
q3
Managed Network Element
Figure 11.11 TMN Service Architecture
Notes
Network Management: Principles and Practice
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Chapter 11
TMN Services & Functions
TMN Management Services
Business
Management
Service
Management
Network
Management
Element
Management
System Management Functional Areas
Configuration
Management
Fault
Management
Performance
Management
Security
Management
DCF
OSF
TMN Function Blocks
WSF
System Management Functions
Object
Management
Accounting
Management
Alarm
Management
NEF
MF
QAF
TMN Functional Components
NM
Manager
Presentation
Function
CMISE
M-GET /
GET-REQUEST
M-SET /
SET-REQUEST
M-CREATE
Remote Procedure Call
ACSE
ROSE
Communication Transport Service
(OSI Presentation Layer)
Figure 11.13 TMN Services and Functions
Notes
Network Management: Principles and Practice
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Chapter 11
Example (NMF)
TMN Logical
Layered Architecture
Business
Management
q3
Ref. Point
Service
Management
q3
Ref. Point
Network
Management
q3
Ref. Point
Element
Management
Physical Realization of
TMN Architecture
Customer
Service
Management
Q3
Service
Details
Service Mgmt
Tarif/Charging
Service Mgmt
Provisioning
Service
Configuration
Net Mgmt
Routing Admin
Equipment
Configuration
Net Element
Cust Admin
Q3
Performance and
Billing Data
Service Mgmt
Other
Serviceimpacting
Events
Net Mgmt
Traffic Admin
Q3
Net Mgmt
Restoration
Equipment
Alarms
Net Element
Switch Mgmt
Net Element
Trans Eqpt
Mgmt
Figure 11.14 TMN Realization Example (NMF)
Network Management: Principles and Practice
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