A zone is a specified group of fabric-connected devices, also called zone
Any device, or zone member, connected to the fabric can be included in
one or more zones.
Devices can communicate only with devices that are in the same zone.
After zoning has been enabled, if a device is not explicitly defined in a
zone that device is considered not to exist.
Devices that attach to the fabric need to be added to a new or existing
zone before their ability to communicate is enabled.
After the zone members are grouped into zones, zones are grouped into
a zone configuration and the zone configuration can then be enabled.
When enabled, the zone configuration is distributed to all switches in
the fabric and an RSCN is delivered by each switch to its local nodes.