3.14. Classes of Service
Fibre Channel classes of service are managed by the FC-2 level. Currently the following five classes of service are defined by the standard:
Class 1—Dedicated connection service.
Connection-oriented
Acknowledged delivery
Class 2—Multiplexed service.
Connectionless
Acknowledged delivery
Class 3—Datagram service. The device drivers determine if data is not received and needs to be retransmitted.
Connectionless
Unacknowledged delivery
Class 4—Fractional service. It uses a fraction of the bandwidth of the link between two ports for communication.
Connection-oriented
Class 6—Unidirectional Dedicated Connection service. It provides dedicated unidirectional connections.
Connection-oriented
Classes 4 and 6 are defined, but are not widely ...
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