08-27-2009 07:10 AM
Refer the Release Notes FOS 5.x and 6.1.x for compatibility beetwen 3, 5, and 6 FabOS Release.
already in advance here the answer.
All zoning and fabric operations performed in a fabric with products running older versions of FOS
should be done via interfaces to products running the latest version of FOS. This is particularly
important for Brocade 3XXX series switches that do not support zoning configuration for newer