Table 3 Port side LED patterns
Recommended actionStatus of hardwareLED colorLED name
Verify that the system is powered on (power
supply switches set to I), the power cables
are attached, and the power source is live.
System is off or there is an internal
power supply failure.
No lightSystem power
(green)
The unit may be faulty. Contact your switch
service provider.
No action requiredSystem is on and power supplies are
functioning properly.
Steady green
Verify that the system is on and has
completed booting
System is off or there is no power.No lightSystem status
(bicolor)
No action required.System is on and functioning
properly.
Steady green
Check the failure indicated on the system
console.
A system fault has occurred. This LED
is steady amber during POST, which
Steady amber
(for more than 5
seconds)
Contact your switch service provider.
is normal and does not indicate a
fault.
Check the management interface and the
error log for details on the cause of status.
Attention is required. A number of
variables can cause this status,
Blinking amber
Contact your switch service provider.
including a single power supply
failure, a fan failure, or one or more
environmental ranges exceeded.
Verify that the Ethernet cable is connected
correctly.
There is no link.No lightEthernet port
activity/link
No action requiredThere is a link.Steady green
No action requiredThere is link activity (traffic).Blinking green
No action requiredPort speed is 10 Mb/s.No lightEthernet port
speed
No action requiredPort speed is 100 Mb/s.Steady green
Verify that the transceiver is installed
correctly and that the cable is connected
correctly.
No light or signal carrier on media
interface
OffFC optical
media port
status (one
bicolor LED for
each FC port)
No action requiredReceiving light or carrier, but not
online
Steady amber
Verify that the diagnostic tests are not being
run. Re-enable the port using the
portenable command.
Disabled (by diagnostics or by
portdisable command).
Slow blinking
amber (2
seconds)
Check the management interface and the
error log for details on the cause of the
Port failureFast blinking
amber (1/2
second) failure. Contact technical support if
necessary.
No action requiredOnlineSteady green
No action requiredOnline but segmented (loopback
cable or incompatible switch)
Slow blinking
green (2 seconds)
No action requiredInternal loopback (diagnostic)Fast blinking
green (1/2
second)
No action requiredOnline, frames flowing through portFlickering green
The nonport side of the switch has one LED per power supply/fan assembly. See Figure 15 (page
30). Table 4 (page 30) describes the status.
LEDs 29