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Chapter 4 Troubleshooting
Diagnosing Problems
4-8
Catalyst 3750 Switch Hardware Installation Guide
78-15136-03
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
CMS or CLI to search
for PoE faults.
Table 4-1
Common Problems and Solutions (continued)
Symptom
Possible Cause
Resolution
Содержание 3750 - Catalyst EMI Switch
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Страница 140: ...Chapter 3 Switch Installation Where to Go Next 3 62 Catalyst 3750 Switch Hardware Installation Guide 78 15136 03 ...
Страница 160: ...Appendix A Technical Specifications A 10 Catalyst 3750 Switch Hardware Installation Guide 78 15136 03 ...
Страница 222: ...Appendix D Translated Safety Warnings Laser Radiation D 38 Catalyst 3750 Switch Hardware Installation Guide 78 15136 03 ...
Страница 230: ...Index IN 8 Catalyst 3750 Switch Hardware Installation Guide 78 15136 03 ...