IBM TotalStorage SAN140M, Installation And Service Manual

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165 Chapter 4: Repair information
Obtaining port diagnostic information
Fibre Channel port diagnostic information can be obtained by:
• Inspecting port LEDs at the port card faceplates or emulated port
LEDs at the Element Manager Hardware View.
• Inspecting parameters at the Element Manager application.
• Inspecting parameters at the EFCM Basic Edition interface.
Port LED diagnostics
To obtain port operational information, inspect port LEDs at the
director port card faceplate or the emulated port LEDs at the Element
Manager Hardware View. These port operational states are defined in
Table 23 .
Table 23
Port operational states
Port
State
Green
LED
Amber
LED
Alert
symbol
Description
Online On Off None An attached device is connected to the director and
ready to communicate, or is communicating with other
attached devices. If the port remains online, the green
port LED remains lit. At the director port card, the green
LED blinks when there is Fibre Channel traffic through
the port.
Offline Off
Off
Off
Off
None
Yellow Triangle
The director port is blocked and transmitting the offline
sequence (OLS) to the attached device.
The director port is unblocked and receiving the OLS,
indicating the attached device is offline.
Beaconing Off or On Blinking Yellow Triangle The port is beaconing. The amber port LED blinks once
every two seconds to enable users to locate the port.
Invalid
Attachment On Off Yellow Triangle The director port has an invalid attachment state. The
reasons for this state display in the
Reasons field of the
Port Properties dialog box.
Link
Incident Off Off Yellow Triangle A link incident occurred on the port. The alert symbol
appears at the
Port Card View, Port List View, and
Hardware View.
Link Reset Off Off Yellow Triangle The director and attached device are performing a link
reset operation to recover the link connection. This is a
transient state that should not persist.