Packetized service Unacknowledged delivery of frames Fabric can discard frames without notification Unreliable multicast option available
Node 3
Class 3—packetized service: • The receiving device does not acknowledge receipt of frames. • If the Fibre Channel fabric cannot deliver the frame for any reason, then the frame is discarded without notification.
• It is up to the Upper Layer Protocols in the transmitting and receiving devices to recover lost frames and to deal with the error condition generated.
Class 3 is the most implemented mode of operation: • Supported by all Fibre Channel switches • Default class of service for most Fibre Channel devices • Only class of service normally supported in Private Fibre Channel Arbitrated Loop operation