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6 – Managing Ports
Configuring Ports
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6.4.6
I/O Stream Guard
The I/O Stream Guard feature suppresses the Registered State Change
Notification (RSCN) messages on a port basis. I/O Stream Guard should be
enabled only on ports connected to initiator devices. To configure the I/O Stream
Guard option using the Port Properties dialog, open the Port menu, and select
Port Properties. Select the option that corresponds to one of the following
options:
Enable
— suppresses the reception of RSCN messages from other ports for
which I/O Stream Guard is enabled.
Disable
— allows free transmission and reception of RSCN messages.
Auto
— suppresses the reception of RSCN messages when the port is
connected to an initiator device with a QLogic HBA. The default is Auto.
Refer to ”Device Scan” on page 6-18.
6.4.7
Device Scan
The Device Scan feature queries the connected device during login for FC-4
descriptor information. Disable this parameter only if the scan creates a conflict
with the connected device.