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Managed Stackable Layer 3 Switches GSM7328S, GSM7352S and GSM7328FS Hardware Instal-
Table 4-1. Troubleshooting Chart (continued)
Problem
A segment or device is
not recognized as part of
the network.
ACT LED is flashing
continuously on all
connected ports and the
network is disabled
Additional Troubleshooting Suggestions
If the suggestions in Table 4-1 do not resolve your problem, refer to the
troubleshooting suggestions in this section.
•
Network Adapter Cards
Make sure that the network adapter cards installed in the PCs are in working
condition and the software driver has been installed.
•
Configuration:
If problems occur after you change the network configuration, restore the
original connections. Then find the problem by making the changes, one step
at a time. Make sure that cable distances, repeater limits, and other physical
aspects of the installation do not exceed the Ethernet limitations.
•
Switch Integrity:
You can verify the integrity of the switch by resetting the switch. To reset the
switch, use the Tools> Reset command or remove AC power from the switch
and then reapply AC power. If the problem continues, contact NETGEAR
technical support.
•
Auto-Negotiation:
The copper 10/100/1000 Mbps ports negotiate the correct duplex mode and
speed if the device at the other end of the link supports auto-negotiation. If the
device does not support auto-negotiation, the switch only determines the
speed correctly and the duplex mode defaults to half-duplex. The fiber gigabit
ports negotiate speed, duplex mode, and flow control, provided that the
attached device supports auto-negotiation.
4-2
Cause
One or more devices are
not properly connected,
or cabling does not meet
Ethernet guidelines.
A network loop
(redundant path) has
been created.
v1.0, February 2007
Solution
Verify that the cabling is correct.
Be sure that all connectors are
securely positioned in the required
ports. Equipment may have been
accidentally disconnected.
Break the loop by ensuring that
there is only one path from any
networked device to any other
networked device.
Troubleshooting
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Table of Contents
Troubleshooting
