Fault Management in Network Management
Filed under Configuration Management , Network Fault Management , on Monday, May 09, 2016
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Fault Management
•
The facilities that enable
the detection, isolation, and correction of abnormal operation of the OSI
environment
•
What is “a fault”?
•
An abnormal condition that
requires management attention (or action) to repair
•
Indicated by failure to
operate correctly or by excessive errors
•
Communication line is cut
•
A crimp in the cable
•
Certain errors may occur
occasionally and are not normally considered to be faults
•
When a fault occurs
•
Determine “exactly” where
the fault is
•
Isolate the rest of the
network from the failure
•
Reconfigure or modify the
network to minimize the impact of operation
•
Repair or replace the
failed components
User requirements for Fault Management
•
Fast and reliable problem
resolution
•
Receive notification and
correct the problem immediately
•
Requires rapid and reliable
fault detection and diagnostic management
•
Provides fault tolerance
•
Redundant components and
alternate communication routes
•
Fault management capability
itself should be redundant
•
Keep informed of the
network status
•
Reassurance of correct
network operation through mechanisms that use tests or analyze dumps, logs,
alerts, or statistics
•
Problem tracking and
control
•
Ensure the problem is truly
resolved and no new problems are introduced
•
Fault management should
have minimal effect on network performance
Issues of Fault Management
- Alarm Correlation
- Trouble Ticketing System
- Expert System Application
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