CHAPTER 5: TROUBLESHOOTING
This chapter provides information about troubleshooting the NETGEAR Model
GS508T Copper Gigabit Switch. Table 5-1 lists symptoms, causes, and solutions of
possible problems.
Table 5-1. Troubleshooting Information
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.
1000M, 100M or 10M Port connection is
Check the crimp on the connectors and make
LED is off or
not functioning.
sure that the plug is properly inserted and
intermittent.
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 C.
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
Half- or full-duplex
Make sure the remote link partner is set to
or performance
setting on the switch
auto negotiate.
degradation is
and the connected
a problem.
device are not the same.
A segment or device
One or more devices
Verify that the cabling is correct. Be sure all
is not recognized as
are not properly
cable connectors are securely positioned in the
part of the network.
connected, or cabling
required ports. Equipment may have been
does not meet
accidentally disconnected.
Ethernet guidelines.
FDX/COL LED is
Collisions are
Some collisions are normal when the connection
blinking yellow
occurring on the
is operating in half-duplex mode.
excessively.
connected segment.
Duplex modes are
Recheck the link partner settings.
mismatched.
troubleshooting 5-1
