IBM SAN32M-2, Installation And Service Manual

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155 Chapter 4: Repair information
Port LED diagnostics
Fibre Channel port diagnostic information is obtained by inspecting
port LEDs at the product front panel or emulated port LEDs at the
management interface (EFCM Basic Edition interface or SAN
management application). LEDs adjacent to each port and software
alert symbols indicate operational status as described in
Table 21 .
Table 21
Port operational states
Port
state
Green
LED
Amber
LED
Alert
symbol
Description
Online On or
Blinking Off None An attached device is ready to communicate, or is
communicating with other devices. Green LED illuminates.
Offline Off
Off
Off
Off
None
Yellow Triangle
Port is blocked and transmitting the offline sequence (OLS) to
attached device.
Port is unblocked and receiving the OLS, indicating attached
device is offline.
Beaconing Off, On, or
Blinking Blinking Yellow Triangle Port is beaconing. Amber LED blinks once every two seconds
to enable users to locate port.
Invalid
Attachment On Off Yellow Triangle Port has an invalid attachment. Reason appears as
supplementary data in the
Event Log .
Link
Incident Off Off Yellow Triangle Link incident occurred. Reason appears in the Link Incident
Log .
Link Reset Off Off Yellow Triangle Product and attached device are performing a link reset to
recover the connection. Transient state that does not persist.
No Light Off Off None No signal (light) is received at product port. Normal condition
when no cable is attached to port or when attached device is
powered off.
Inactive On Off Yellow Triangle Port is inactive. Reason appears at Port List View or Port
Properties dialog box.
Not
Installed Off Off None Optical transceiver not installed in the port.
Not
Operational Off Off Yellow Triangle Port is receiving the not operational sequence (NOS) from
attached device.