Q-Logic 5200 ユーザーズマニュアル

5 – Managing Ports

Configuring Ports

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The I/O Stream Guard feature suppresses the generation of 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. Click the radio button 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 under the following 
conditions: 
„

The port is connected to an initiator device with a QLogic HBA.

„

The Scan Device option is enabled. 

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.

GL_Port

Generic loop port - Self discovers as an F_Port, FL_Port, or an E_Port. 
GL_Port is the default port type. A single device on a public loop will 
attempt to configure as an F_Port first, then if that fails, as an FL_Port. 
1-Gbps/2-Gbps only.

Donor

Donor port - Allows buffer credits to be used by another port. 
1-Gbps/2-Gbps only.