Port Transceiver Media Status; I/O Stream Guard; Device Scan; Port Transceiver Media View - HP StorageWorks 8/20q User Manual

Port transceiver media status

To display transceiver media status, open the View menu and select View Port Media.
port media states and their meanings.
Table 24

Port transceiver media view

Media icon
None

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

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.
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)
Empty port; no transceiver installed (gray) or unlicensed
transceiver (dark gray)
HP StorageWorks 8/20q Fibre Channel Switch QuickTools Switch Management User Guide
"Device Scan" (page 97).
Table 24 lists the
97