chapter 11 telecommunications management network chapter 11 network management: principles and...
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Chapter 11
Telecommunications Management Network
Chapter 11
Network Management: Principles and Practice© Mani Subramanian 2000
11-1
Notes
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
Chapter 11
Network Management: Principles and Practice© Mani Subramanian 2000
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Notes
OS: Trunk Testing System
Telecommunication Network
Figure 11.1 Operations System for Network Transmission
Public Switch
TransmissionTest System
TransmissionTest System
Public Switch
TrunkTest System
Voice Voice
Nodes
Transmission Links
• 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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Notes
OS: Telephone Switch Traffic
Figure 11.2 Operations System for Traffic Measurement
Data / TelecommunicationNetwork
Router / Switch
TrafficCounter
TrafficCounter
Router / Switch
TrafficMeasurement System
Transmission Links
Nodes
• Traffic monitored at switch appearance• Call blocking statistics obtained• Traffic and call-blocking statistics provide data for planning• Importance of Operations, administration, mainte- nance, and provisioning
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Network Management: Principles and Practice© Mani Subramanian 2000
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TMN Conceptual Model
Telecommunication Network
Figure 11.3 TMN Relationship to Data and Telecommunication Network
Voice Voice
Data Communication Network
OperationsSystem
NMS
OperationsSystem
OperationsSystem
Workstation
TelecommunicationsManagement
Network
SwitchingSystem
TransmissionSystem
SwitchingSystem
SwitchingSystem
TransmissionSystem
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Notes
Notes
TMN Conceptual Model
Customers
Services provided byTelecommunications
Provider
Network
Operations Systems
System Operators
OS OS
Customers
Services provided byTelecommunications
Provider
Network
Operations Systems
OS OS
Figure 11.4 TMN Conceptual Model
XQ3
F
Workstation
System Operators
Workstation
F
Service provider A Service provider B
Q3 Q3
Q3
• Components• Interfaces
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Network Management: Principles and Practice© Mani Subramanian 2000
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Notes
TMN Architecture
TMN Architecture
PhysicalArchitecture
InformationalArchitecture
FunctionalArchitecture
Figure 11.6 TMN Architecture
• 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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Network Management: Principles and Practice© Mani Subramanian 2000
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Notes
Functional Architecture
OSF
MF WSF
QAFNEF
q3
f
qxqx
OSF
x
q3
OSFq3
TMN B
TMN A
Figure 11.7 TMN Functional Architecture
MF Mediation FunctionNEF Network Element FunctionOSF Operations Systems FunctionQAF Q Adapter FunctionWSF Workstation Function
• 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
Chapter 11
Network Management: Principles and Practice© Mani Subramanian 2000
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Notes
Functional Architecture
OSF
MF WSF
QAFNEF
q3
f
qxqx
OSF
x
q3
OSFq3
TMN B
TMN A
Figure 11.7 TMN Functional Architecture
MF Mediation FunctionNEF Network Element FunctionOSF Operations Systems FunctionQAF Q Adapter FunctionWSF Workstation Function
• 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
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Network Management: Principles and Practice© Mani Subramanian 2000
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Notes
TMN Reference Point
Figure 11.8 TMN Reference Point
Function Block Function BlockReference Point
• 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
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Network Management: Principles and Practice© Mani Subramanian 2000
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Notes
Physical Architecture
OperationsSystem
(OS)
Data Communications Network (DCN)
Q Adapter(QA)
Data Communications Network (DCN)
NetworkElement
(NE)
Q Adapter(QA)
NetworkElement
(NE)
MediationDevice(MD)
X/F/Q3
F/Q3
Qx
Q3
Q3
QxQx
X
F
TMN
Workstation
OperationsSystem
(OS)
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Notes
Information Architecture
Manager Agent
Operations / Requests
Responses
Notifications / Traps
Figure 11.10 TMN Information Architecture
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Network Management: Principles and Practice© Mani Subramanian 2000
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Notes
Service Architecture
Business Management
Service Management
Network Management
Element Management
Managed Network Element
q3
q3
q3
q3
Figure 11.11 TMN Service Architecture
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Network Management: Principles and Practice© Mani Subramanian 2000
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TMN Services & Functions
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Figure 11.13 TMN Services and Functions
ACSE ROSE
TMN Functional Components
TMN Management Services
BusinessManagement
ServiceManagement
NetworkManagement
ElementManagement
System Management Functional Areas
ConfigurationManagement
FaultManagement
PerformanceManagement
SecurityManagement
AccountingManagement
TMN Function Blocks
System Management Functions
CMISE
QAFNEF
NMManager
ObjectManagement
AlarmManagement
M-GET /GET-REQUEST
M-SET /SET-REQUEST M-CREATE
Communication Transport Service(OSI Presentation Layer)
OSF WSF MF
DCF
PresentationFunction
Remote Procedure Call
Notes
Example (NMF)
BusinessManagement
CustomerService
Management
ServiceManagement
Service MgmtTarif/Charging
Service MgmtProvisioning
Service MgmtOther
NetworkManagement
Net MgmtRouting Admin
Net MgmtTraffic Admin
Net MgmtRestoration
ElementManagement
Net ElementCust Admin
Net ElementSwitch Mgmt
Net ElementTrans Eqpt
Mgmt
ServiceDetails
Performance andBilling Data
ServiceConfiguration
Service-impacting
Events
EquipmentConfiguration
EquipmentAlarms
Q3
Q3
Q3
TMN LogicalLayered Architecture
Physical Realization ofTMN Architecture
Figure 11.14 TMN Realization Example (NMF)
q3Ref. Point
q3Ref. Point
q3Ref. Point
Chapter 11
Network Management: Principles and Practice© Mani Subramanian 2000
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