In a particular embodiment, a method of evaluating a network is disclosed.
The method identifies potential failure points between a layer two
asynchronous transfer mode network and a layer one Synchronous Optical
Network (SONET) network. The method includes identifying a first set of
circuit identifiers of inter-nodal links of a layer two asynchronous
transfer mode (ATM) network, correlating a second set of circuit
identifiers associated with elements of a layer one SONET network,
identifying a subset of the first set of circuit identifiers of those
inter-nodal links that are mated with each other, and comparing the
subset of the first set of circuit identifiers to the second set of
circuit identifiers to identify single point of failure elements
including interface elements and add drop multiplexer elements.