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| 5 – Managing Ports |
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| Configuring Ports |
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| State | Description | |
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| GL_Port | Generic loop port - Self discovers as an F_Port, FL_Port, or an E_Port. | |
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| GL_Port is the default port type. A single device on a public loop will | |
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| attempt to configure as an F_Port first, then if that fails, as an FL_Port. | |
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| Donor | Donor port - Allows buffer credits to be used by another port. | |
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5.2.4
I/O Stream Guard
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.
5.2.5
Scan Device
The Device Scan feature queries the connected device during login for