Additional Troubleshooting Suggestions - NETGEAR ProSafe JGSM7224 Hardware Installation Manual

Table 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
suggestions in this section.
• Network adapter cards
Make sure that the network adapter cards installed in the PCs are in working condition
and that 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
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 determines the speed, 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.
ProSafe™ 24-Port Managed Switch JGSM7224
Cause
One or more devices are not
properly connected, or cabling
does not meet Ethernet
guidelines.
A network loop (redundant
path) has been created.
Table 1 do not resolve your problem, refer to the troubleshooting
Troubleshooting
Solution
Verify that the cabling is correct. Be sure
that all connectors are securely positioned
in the required ports. Equipment might have
been accidentally disconnected.
Break the loop by ensuring that there is only
one path from any networked device to any
other networked device.
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