HP 2/8q Fibre Channel manual Port Type parameters, Interoperability Credits parameters

Switch Manager

Port Type parameters

The ports can be configured to self-discover the proper type to match the device or switch to which it is connected. Table 27 describes the port types.

1.Select one or more ports in the faceplate display.

2.Select Port > Port Properties. The Port Properties dialog box is displayed.

3.Click the Port Type option for the port type you want.

4.Click OK.

Table 27: Port types
State	Description
F_Port	Fabric port—Supports a single public device (N_Port).
FL_Port	Fabric loop port—Self discovers a single device (N_Port) or a loop of
	up to 126 public devices (NL_Port).
G_Port	Generic port—Self discovers as an F_Port.
GL_Port	Generic loop port—Self discovers as an F_Port or an FL_Port. GL_Port
	is the default port type. A single device on a public loop attempts to
	configure as an F_Port first; if that fails it attempts to configure as an
	FL_Port.
Donor	Donor port—Allows buffer credits to be used by another port.

Interoperability Credits parameters

Note: Interoperability Credits is not supported at this time.

Switches negotiate with other switches to resolve differences in the number of port buffer credits.

I/O Stream Guard parameters

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 suppress the generation of RSCN messages for the selected port, open the Port menu, and then click the Enable option in the I/O Stream Guard area of the Port Properties dialog box.

Device Scan parameter

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.

Changing the port symbolic name

To change the symbolic name of a port from the faceplate display:

1.Open the faceplate display and then select a port.

2.Select Port > Port Symbolic Name. The Port Symbolic Name dialog box is displayed.

HP StorageWorks 2/8q Fibre Channel Switch Management User Guide 87