A CTC-created circuit is missing a cross-connect or network span; a complete path from source to destination(s) does not exist, or the MAC address changed occurred on one of the circuit nodes and the circuit is in need of repair.
In CTC, circuits are represented using cross-connects and network spans. If a network span is missing from a circuit, the circuit status is PARTIAL. However, a PARTIAL status does not always mean a circuit traffic failure has occurred, because traffic might flow on a protect path.
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