Installation guide

3-7
Catalyst 3750 Switch Hardware Installation Guide
OL-6336-01
Chapter 3 Troubleshooting
Diagnosing Problems
PoE mode LED blinks amber
Note
When the PoE mode
is selected, a green
PoE LED means that
the port status LEDs
show the PoE status.
At least one PoE port has a fault, or
power has been denied to at least one
of the PoE ports.
Caution PoE faults are caused
when noncompliant
cabling or powered
devices are connected to a
PoE port. Only
standard-compliant
cabling can be used to
connect Cisco
pre-standard IP Phones
and wireless access points
or IEEE
802.3af-compliant
devices to PoE ports. A
cable or device that causes
a PoE fault must be
removed from the
network.
Use the Mode button to show the
PoE status for all ports. The
affected port LEDs blink amber
or alternate green and amber.
If a port LED blinks amber,
there is a PoE fault. A cable or
device that causes a PoE fault
must be removed from the
network.
If a port status LED is
alternating green and amber,
connect the powered device to
an external AC power source.
Note You can also use the
device manager or CLI
to search for PoE faults.
Table 3-1 Common Problems and Solutions (continued)
Symptom Possible Cause Resolution