I need some information about selecting principle switch in a fabric.
1. How fabric will decide which should be the principle switch2. Will it consider domain id or switch WWN3. Does any settings co be done in a switch to consider principle switch4. If I change principle switch, will it affect live fabric or is an online activity
1. How fabric will decide which should be the principle switch 2. Will it consider domain id or switch WWN
<- the switch that have lower WWN will be principle switch.
3. Does any settings co be done in a switch to consider principle switch
<- see the command ref manual , and see fabricprincipal.
fabricPrincipalSets the principal switch selection mode.Synopsis fabricprincipal --help|-hfabricprincipal [--show|-q]fabricprincipal --enable [-priority|-p priority] [-force|-f]fabricprincipal --disablefabricprincipal [-f] modeDescription Use this command to set principal switch selection mode for a switch and to set priorities forprincipal switch selection.The implementation of the fabricPrincipal command is based solely on mechanisms specified inthe Fibre Channel standards. These mechanisms provide a preference for a switch requesting to bethe principal switch in a fabric, but they do not provide an absolute guarantee that a switchrequesting to be the principal switch is granted this status.When dealing with large fabrics, the selection of the principal switch is less deterministic. In thesecases, to help ensure that the desired switch is selected as the principal switch, a small cluster ofswitches should be interconnected first, followed by additional switches to enlarge the fabric.
fabricprincipal 1 command mean that principal mode enabled.
4. If I change principle switch, will it affect live fabric or is an online activity
<- If disconnect the ISL after that re join the fabric, it should be change.