This section provides information about registered state-change
notifications (RSCNs) on zSeries® hosts.
McDATA and CNT switches ship without any configured zoning. This
unzoned configuration enables the default zone on some McDATA switches. This
configuration enables all ports in the switch with a fibre-channel connection
to communicate with each other and to receive registered state change notifications
about each other. You can set the zones. Here are some recommendations:
- If you have FICON-only environments, do not disable the default zone.
- If you have FICON™ environments
and plan to add (or already have) fibre-channel intermix on the switch, ensure
that all FICON host
adapters and all FICON-capable device ports are in an explicitly defined common
zone.
- If you have open-systems traffic with Fibre Channel Protocol, continue
to create zones that include the host ports and all desired storage ports.
Multiple overlapping zones should be used in this case to support communication
from multiple host ports to share device ports.