Network Management

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Network Management
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Network Management

• Network management refers to the activities,
  methods, procedures, and tools that pertain to
  the operation, administration, maintenance, and
  provisioning of networked systems.
• A common way of characterizing network management
  functions is FCAPSFault, Configuration,
  Accounting, Performance and Security.

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FCAPS-Fault management

• A fault is an event that has a negative
  significance.
• The goal of fault management is to recognize,
  isolate, correct and log faults that occur in the
  network.
• It uses trend analysis to predict errors so that
  the network is always available. This can be
  established by monitoring different things for
  abnormal behavior.

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FCAPS-Fault management

• When a fault or event occurs, a network component
  will often send a notification to the network
  operator using a proprietary or open protocol
  such as SNMP, or at least write a message to its
  console for a console server to catch and
  log/page.
• This notification is supposed to trigger manual
  or automatic activities.
• For example, the gathering of more data to
  identify the nature and severity of the problem
  or to bring backup equipment on-line.

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FCAPS-Fault Logs

• Fault logs are one input used to compile
  statistics to determine the provided service
  level of individual network elements, as well as
  sub-networks or the whole network.
• They are also used to determine apparently
  fragile network components that require further
  attention.

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FCAPS-Fault Management Systems

• The leading Fault Management systems are EMC
  Smarts, CA Spectrum, HP OpenView, IBM Tivoli
  Netcool, TTI Telecom Netrac, CA Clarity,
  Objective Systems Integrators and NETeXPERT

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FCAPS-Configuration

• The goals of configuration management include
• to gather and store configurations from network
  devices (this can be done locally or remotely).
• to simplify the configuration of the device
• to track changes that are made to the
  configuration
• to configure ('provision') circuits or paths
  through non-switched networks

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FCAPS - Accounting

• Accounting is often referred to as billing
  management. The goal is to gather usage
  statistics for users.
• Using the statistics the users can be billed and
  usage quota can be enforced.
• Examples
• Disk usage
• Link utilization
• CPU time
• RADIUS, TACACS and Diameter are examples of
  protocols commonly used for accounting.

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FCAPS-Performance Management

• Performance management enables the manager to
  prepare the network for the future, as well as to
  determine the efficiency of the current network.
• For example, the network performance addresses
  the throughput, percentage utilization, error
  rates and response times areas.

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FCAPS-Performance Management

• By collecting and analyzing performance data, the
  network health can be monitored.
• Trends can indicate capacity or reliability
  issues before they become service affecting.
• Performance thresholds can be set in order to
  trigger an alarm.
• The alarm would be handled by the normal fault
  management process (see above).

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FCAPS-Security

• Security management is the process of controlling
  access to assets in the network.
• Data security can be achieved mainly with
  authentication and encryption.
• Authorization to it is configured with OS and
  DBMS access control settings.

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Some FCAPS References

• http//www.youtube.com/watch?v_SRlybLwcVY
• http//www.cisco.com/en/US/tech/tk869/tk769/techno
  logies_white_paper09186a00800aea9c.shtml