Planet Technology GSW-2401 - Manual (Page 16)

4. TROUBLESHOOTING
This chapter contains information to help you solve problems. If Giga
Switch is not functioning properly, make sure the Ethernet Switch was
set up according to instructions in this manual.
Some stations cannot talk to other stations located on the other
port
Solution:
The address table may contain older information than of the
address table of that node. Please power down to refresh the
address information.
Performance is bad
Solution:
Check the full duplex status of the Ethernet Switch. If the
Ethernet Switch is set to full duplex and the partner is set to half
duplex, then the performance will be poor.
Why the Switch doesn't connect to the network
Solution:
Check the LNK/ACT LED on the Switch
Try another port on the Switch I
Make sure the cable is installed properly
Make sure the cable is the right type
Turn off the power. After a while, turn on power again