Patent ID: 8121816

Claim:
A computer-implemented method comprising: measuring a performance of a virtual channel carrying packets through a transport network for a time period, wherein the packets originate from end-point equipment not forming part of the transport network; measuring a performance of an ingress interface to the transport network carrying the virtual channel packets for the time period; measuring a performance of an internal interface carrying the virtual channel packets internal to the transport network for the time period; determining that the performance of the virtual channel during the time period does not meet a first performance standard, and when the performance of the virtual channel does not meet the first performance standard: determining whether the performance of the ingress interface meets a second performance standard and whether the performance of the internal interface meets a third performance standard, generating a report indicating that the end-point equipment caused the virtual channel not to meet the first performance standard when the performance of the ingress interface does not meet the second performance standard for the time period, and generating a report indicating that the transport network caused the virtual channel not to meet the first performance standard when the performance of the internal interface does not meet the third performance standard for the time period.