4-7
Catalyst 3560 Switch Hardware Installation Guide
78-16057-01
Chapter 4 Troubleshooting
Diagnosing Problems
Powered device connected to
PoE port, but no power given
PoE might be disabled on switch
port.
Use the Mode button to show the
PoE status for all ports.
If the port status LED is amber,
configure the switch port PoE
setting to Auto.
Note PoE is enabled by
default.
PoE mode LED blinks amber
Note
When PoE mode is
selected, the port
status LED shows the
PoE status. The PoE
mode LED is green to
show that the port
status LEDs display
the PoE mode status.
At least one PoE port is in fault
condition, 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 or
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 will blink
amber or alternate green and
amber.
If a port LED blinks amber, the
port is in 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
CMS or CLI to search
for PoE faults.
Table 4-1 Common Problems and Their Solutions (continued)
Symptom Possible Cause Resolution
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