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Chapter 4 Managing Ports 117
Port Transceiver Media Status
To display transceiver media status, open the View menu and select View Port
Media.
TABLE 4-8 lists the port media states and their meanings.
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, open the Port menu, and select Port Properties. Select the
option 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.
TABLE 4-8 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)
XPAK online (green/black), logged-in, active, and ready to send data
XPAK offline (gray/black), not logged-in, active, can receive signal, but
cannot accept a device login
XPAK, unlicensed (dark gray/white)
XPAK, unknown (blue/black)
None Empty port; no transceiver installed (gray) or unlicensed (dark gray)
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