Technical data

Port side LED patterns during normal operation (Continued)TABLE 3
LED name LED color Status of hardware Recommended action
Flashing amber/green Attention is required. A
number of variables can
cause this status, including
a single power supply
failure, a fan failure, or one
or more environmental
ranges has been
exceeded.
Check the management
interface and the error log
for details on the cause of
the status.
Contact your Extension
Switch service provider.
Ethernet Link No light There is no link. Verify that the Ethernet
cable is connected
correctly.
Steady green There is a link. No action required.
Ethernet Status/Activity No light No activity. No action required.
Flashing green There is link activity
(traffic).
No action required.
FC Port Status No light Indicates one of the
following:
• No signal or light carrier
(media or cable)
detected.
• Blade may be currently
initializing.
• Connected device is
configured in an offline
state.
• Verify the power LED is
on, and check the SFP
and cable.
• Verify the blade is not
currently being
initialized.
• Verify the status of the
connected device.
Steady green Port is online (connected
to external device) but has
no traffic.
No action required.
Slow-flashing green (on
1/2 second; then off 1/2
second)
Port is online but
segmented because of a
loopback cable or
incompatible Extension
Switch connection.
Verify that the correct
device is attached to the
switch.
Fast-flashing green (on 1/4
second; then off 1/4
second)
Port is online and an
internal loopback
diagnostic test is running.
No action required.
Flickering green Port is online and frames
are flowing through the
port.
No action required.
Steady amber Port is receiving light or
signal carrier, but it is not
online yet.
No action required.
Operating the Switch
Brocade 7840 Extension Switch Hardware Reference Manual 33
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