HP 8/20q HP StorageWorks 8/20q Fibre Channel Switch QuickTools Switch Manageme - Page 97
Port transceiver media status, Table 24 Port transceiver media view, I/O Stream Guard, Device Scan
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Port transceiver media status To display transceiver media status, open the View menu and select View Port Media. Table 24 lists the port media states and their meanings. Table 24 Port transceiver media view Media icon Description Optical SFP, online (green/black), logged-in, active, and ready to send data. Optical SFP, offline (gray/black), not logged-in, active, can receive signal, but cannot accept a device login Optical SFP, unlicensed (dark gray/black) Optical SFP, unknown, unlicensed (dark gray/blue) None Empty port; no transceiver installed (gray) or unlicensed transceiver (dark gray) 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 box, open the Port menu, and select Port Properties. Select 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 an HBA. The default is Auto. See "Device Scan" (page 97). 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. HP StorageWorks 8/20q Fibre Channel Switch QuickTools Switch Management User Guide 97