NETGEAR GS748T GS748T GS748T User Manual

Troubleshooting A-1
v1.0, January 2007
Appendix A
Troubleshooting
This chapter provides information about troubleshooting the NETGEAR GS748T Gigabit Smart
Switch. Information is supplied as:
• A Troubleshooting chart
• Additional troubleshooting suggestions
Troubleshooting Chart
Table A-1 lists symptoms, causes, and solutions of possible problems.
Table A-1. Troubleshooting Chart
Symptom Cause Solution
Power LED is off No power is received Check the power cord connections for the switch at
the switch and the connected device
Make sure all cables used are correct and comply
with Ethernet specifications.
Link/ACT LED is off Port connection is not
working
Check the crimp on the connectors and make sure
that the plug is properly inserted and locked into the
port at both the switch and the connecting device.
Make sure all cables used are correct and comply
with Ethernet specifications. See Appendix D.
Check for a defective adapter card, cable, or port by
testing them in an alternate environment where all
products are functioning.
File transfer is slow or
performance
degradation is a
problem
Half- or full-duplex
setting on the switch
and the connected
device are not the same
Make sure the attached device is set to auto
negotiate.

NETGEAR GS748T GS748T GS748T Specifications

General

Model Number	GS748T
Product Type	Switch
Ports	48
SFP Ports	4
Form Factor	Rack-mountable
Layer	Layer 2
Switching Capacity	96 Gbps
Forwarding Rate	71.4 Mpps
MAC Address Table Size	16K
Jumbo Frame Support	Yes
VLAN Support	Yes
Number of VLANs	256
Quality of Service (QoS)	Yes
PoE	No
Stackable	No
Port Type	Gigabit Ethernet
Management	Yes
Operating Temperature	32°F to 104°F (0°C to 40°C)
Storage Temperature	-4°F to 158°F (-20°C to 70°C)
Humidity	90% maximum relative humidity, noncondensing