Method and system of evaluating survivability of ATM switches over SONET networks

A system comprising:

• a first input to receive a first set of circuit identifiers of inter-nodal links of a layer two asynchronous transfer mode (ATM) network, the first set of circuit identifiers including inter-nodal link endpoints;
• a second input to receive a second set of circuit identifiers associated with elements of a layer one Synchronous Optical Network (SONET) network, the second set of circuit identifiers including identifiers associated with elements of a plurality of different facility SONET rings;
• a network evaluation system to identify potential failure points between the layer two ATM network and the layer one SONET network, the network evaluation system including program logic to:
• correlate the second set of circuit identifiers associated with the elements of the layer one SONET network with the first set of circuit identifiers,
• identify a subset of the first set of circuit identifiers of those inter-nodal links that are mated and that have redundancy, and
• match the subset of the first set of circuit identifiers to the second set of circuit identifiers to identify single point of failure elements in the layer one SONET network and single point of failure elements in the layer two ATM network including interface elements and add drop multiplexer elements.

A computer readable storage medium having stored thereon a computer program having program instructions executable by a computer processor to:

• evaluate data including a first set of circuit identifiers of inter-nodal links of an asynchronous transfer mode (ATM) network, the first set of circuit identifiers including inter-nodal link endpoints;
• evaluate a second set of circuit identifiers associated with elements of a Synchronous Optical Network (SONET) network, the second set of circuit identifiers including identifiers associated with elements of a plurality of different facility SONET rings;
• correlate the second set of circuit identifiers associated with the elements of the SONET network with the first set of circuit identifiers to identify a subset of the first set of circuit identifiers of those inter-nodal links that are mated and that have redundancy;
• and
• match the subset of the first set of circuit identifiers to the second set of circuit identifiers to identify single point of failure elements in the SONET network and single point of failure elements in the ATM network.