Troubleshooting; Table 5-1. Troubleshooting Information - NETGEAR GS508T Installation Manual

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
Power LED is off. No power is received
at the switch.
1000M, 100M or 10M Port connection is
LED is off or not functioning.
intermittent.
File transfer is slow Half- or full-duplex
or performance setting on the switch
degradation is and the connected
a problem. device are not the same.
A segment or device One or more devices
is not recognized as are not properly
part of the network. connected, or cabling
does not meet
Ethernet guidelines.
FDX/COL LED is Collisions are
blinking yellow occurring on the
excessively. connected segment.
Duplex modes are
mismatched.
Solution
Check the power cord connections for the switch
and the connected device.
Make sure all cables used are correct and comply
with Ethernet specifications.
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 C.
Check for a defective adapter card, cable, or port
by testing them in an alternate environment where
all products are functioning.
Make sure the remote link partner is set to
auto negotiate.
Verify that the cabling is correct. Be sure all
cable connectors are securely positioned in the
required ports. Equipment may have been
accidentally disconnected.
Some collisions are normal when the connection
is operating in half-duplex mode.
Recheck the link partner settings.

troubleshooting

5-1