Fibre Channel logins takes place after a link is operational. There are three different types of logins in Fibre Channel technology:
- Fabric Login (FLOGI)
- Port Login (PLOGI)
- Process Login (PRLI)
In the Login process different operational parameters are exchanged:
- FC-PH version support
- Classes of service supported
- Frame size
- Type of ACK supported: single frame, multiple frame
- Number of buffer credits
- Addressing
- Time out values: E D TOV and R A TOV
- Error recovery policies
- Number of sequences
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