A method and system for emulating an Fibre Channel link over a SONET transport
path by which Fibre Channel data is transported across the SONET/SDH transport
path. To provide link integrity, techniques to handle link failures from a Fibre
Channel element to its associated Fibre Channel port, or of the SONET/SDH network
linking Fibre Channel ports include transmitting error condition codes over the
SONET/SDH transport path overhead to a remote Fibre Channel transport interface
so that the Fibre Channel link from the remote Fibre Channel transport interface
to the associated remote Fibre Channel port is disabled. Timing the length of failures
and return of operation of the failed links is used to handle transient conditions
and to avoid link bouncing.