Importance

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Abstract

A system implementing a method for determining QoS degradations comprises:

receiving alarms (a) from application layer or from network nodes of a MPLS network, including Passive Traffic Analyzer, Physical Layer Monitoring and MPLS OAM nodes,depending on the alarm, the system requests testing (d) for location and the network nodes answer back with location (e),once the fault is located, the system starts traffic restoration (h) via MPLS Signaling and receives the result (i),the system may need to consult the System Database, optionally query (b)—reply (c) step before requesting location, while query (f)—response (g) step is mandatory before restoration (h),once traffic restored, further testing by the network nodes and/or the application layer are triggered (j) by the system to ensure the correct overall QoS within the new network situation,a loop (i) of further restoration can be triggered by the system until a global stable non-degraded behavior is declared.

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First Claim