EFMCu (PCS) port Fault Status. This is a bitmap of possible conditions. The various bit positions are: noPeer - peer PHY cannot be reached (e.g. no PMEs attached, all PMEs are Down etc.) More info is available in efmCuPmeFltStatus. pmeSubTypeMismatch - local PMEs in the aggregation group are not of the same sub-type, e.g. some PMEs in the local device are -O while others are -R subtype. lowBandwidth - ifSpeed of the port reached or droped below efmCuThreshLowBandwidth This object is intended to supplement ifOperStatus object in IF-MIB. Additional information is available via efmCuPmeFltStatus object for each PME in the aggregation group (single PME if PAF is disabled).