- LIP - Loop Initialization Protocol (or Loop reset). Method in which Fibre channel links initialize communication.
- Link - Link reset. Reset of FC link.
- Sync - Loss of synchronization. A fibre channel device was unable to decode the transmitted signal.
- Signal - Loss of signal. A fibre channel device was unable to receive any signal.
- Seq - Sequence Error. This is when an illegal fame state is received. For example a Start of Frame is followed by another Start of Frame instead of an End of Frame.
- ITW - Invalid Transmission Word. A fibre channel receiver has received an encoded word 8b/10b that is not valid.
- CRC - Cyclic Redundancy Check. The CRC value for the fibre channel frame does not match the frame which means the frame is corrupt and must be re-sent.