CT Network management 2015.ppt

Network management 13 accounting management purposes

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Network Management 13 Accounting Management Purposes Collecting, interpreting and reporting of costing and charging- oriented information about resource usage Identify bandwidth consumers Effective allocation of costs Areas Gathering data about utilisation of network resources Setting quotas using metrics (Possibly) billing users for network use
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Network Management 14 Traffic Management
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Network Management 15 Network Management Models For any significantly sized network, cannot do all management on network nodes Models: Centralised Distributed Delegated
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Network Management 16 Centralised Model Single central manager site Advantages Consistency in: View of network and its status Application of policies Disadvantages Heavy workload on manager Traffic congestion Does not scale Single point of failure May be ameliorated by duplicated systems
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Network Management 17 Distributed Model Multi-level hierarchy of managers Intermediate managers Make some decisions Report some status info to higher level manager Advantages Reduce traffic congestion and point of failure problems Disadvantages No good overview of network status Adjacent managers can only find out about each other through central manager
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