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Trouble Shooting
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The NH2025-10 is a highly reliable unit. If you encounter an operating problem, follow the
troubleshooting steps below. If the problem persists, contact your local NBase-Xyplex representative.
1. Ensure that the unit is plugged into a grounded, functioning AC outlet providing between 90
VAC and 264 VAC at 50/60 Hz. Check the power fuse and replace if blown.
CAUTION
For continued protection against fire, replace with same type and rating fuse.
2. Review all link LEDs to ensure that those ports you believe should be functioning are
properly attached to a cable.
3. Verify that your cables are wired correctly.
Problem:
LINK LED is ON but data is not being forwarded through switch.
Cause:
Cables are too long.
Solution: Make sure that cables are as defined in the installation section of
this guide. Check that cables meet the 10Base-T/100Base-TX
standards and that they do not exceed 100m.
4. Review all link LEDs to ensure that those ports you believe should be functioning are
properly configured, and not disabled or partitioned.
Problem:
Port disabled due to a defective device on segment.
Cause:
When a defective NIC card causes a permanent jam on
the network, the port will be disabled by the NH2025-10.
Solution:
a) Locate the defective device and disconnect it from the
network.
b) The disabled port can be enabled through management
or by shutting off the unit and powering up again.
5. Ensure that the equipment attached to the switch is properly configured.
If you encounter any situations or problems you cannot solve, obtain, if possible, the
following information:
The serial number of your switch and its hardware address
• If the NMS option is installed, the firmware revision number displayed in the terminal
console banner message.
• The configuration of the equipment being interfaced with the switch.
• The sequence of events leading up to your problem.
• Troubleshooting procedures you have already followed.