RDI cells received from the remote endpoint of the VP/VC indicate an interruption in the cell transfer capability of the VP/VC. For example, the remote endpoint of a VC receives an F5 AIS cell, enters the AIS state, and transmits F5 RDI cells for the duration of the AIS condition. On receipt of a configurable number of F4 or F5 RDI cells, the ATM interface declares an RDI state but does not generate OAM fault management cells in response to the condition. The ATM interface leaves the RDI condition when no RDI cells have been received for a configurable time period.
The OAM VC status field of show atm vc atm shows whether the circuit is in RDI state.