EMC DS-4900B Hardware Reference Manual page 47

Table 3-1
LED name LED color
Port Status No light
Slow flashing green
(flashing in 2-second
intervals)
Fast flashing green
(flashing in
half-second
intervals)
Flickering green
(steady with random
flashes)
Steady green
Slow flashing amber
(flashing in 2-second
intervals)
Fast flashing amber
(flashing in
half-second
intervals)
Steady amber (for
more than 5
seconds)
Port side LED patterns during normal operation (continued)
Status of hardware
No signal or light carrier (media or
cable) detected.
Port is online but segmented because of
a loopback cable or incompatible switch
connection.
Port is online and an internal loopback
diagnostic test is running.
Port is online and frames are flowing
through the port.
Port is online, but has no traffic.
Port is disabled (because of diagnostics
or the portDisable command).
Port is faulty.
Port is receiving light or signal carrier at
4 Gbit/sec; but is not yet online.
Operating the DS-4900B
Recommended action
Check transceiver and cable.
No action required.
No action required.
No action required.
No action required.
Verify that the diagnostic tests are not
running. Reenable the port using the
portEnable command.
Check the management interface and
the error log for details on the cause of
status.
Contact your EMC Customer Service
Representative.
No action required.
Interpreting LED activity
3-5