Cisco Catalyst 3750 Hardware Installation Guide

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

Cisco Catalyst 3750 Specifications

General

Device Type	Switch
Switching Capacity	32 Gbps
Forwarding Rate	38.7 Mpps
Stacking Bandwidth	32 Gbps
RAM	128 MB
Jumbo Frame Support	Yes
Switch Type	Managed
Model	Catalyst 3750 Series
Uplink Interfaces	SFP
Form Factor	Rack-mountable
MAC Address Table Size	12, 000 entries
Routing Protocol	RIP, OSPF, EIGRP
Remote Management Protocol	SNMP, Telnet, HTTP
Features	Layer 3 switching, Layer 2 switching, auto-negotiation, BOOTP support, ARP support, VLAN support, auto-uplink (auto MDI/MDI-X), IGMP snooping, traffic shaping, MAC address filtering, Quality of Service (QoS), Jumbo Frames support, MLD snooping, Dynamic ARP Inspection (DAI), Cisco EnergyWise technology
Power over Ethernet (PoE)	PoE
Operating Temperature	-5 - 45 °C
Operating Humidity	10% to 85% non-condensing