D-Link DXS-3250 Web/Installation Manual page 278

D-Link DXS-3250/DXS-3227P/DXS-3227 User Guide
P r o bl em s
Self-test exceeds 15
seconds
No connection is estab-
lished and the port LED
is on
Device is in a reboot
loop
No connection and the
port LED is off
P os si bl e C au se
The device may not be
correctly installed.
Wrong network address
in the workstation
No network address set
Wrong or missing proto-
col
Faulty ethernet cable
Faulty port
Faulty module
Incorrect initial configura-
tion
Software fault
Incorrect ethernet cable,
e.g., crossed rather than
straight cable, or vice
versa, split pair (incorrect
twisting of pairs)
Fiber optical cable con-
nection is reversed
Bad cable
Wrong cable type
S o lu t io n
Remove and reinstall the device. If that does not
help, consult your technical support representative.
Configure the network address in the workstation
Configure the network address in the workstation
Configure the workstation with IP protocol
Replace the cable
Replace the module
Replace the module
Erase the connection and reconfigure the port
Download and install a working or previous software
version from the console
Check pinout and replace if necessary
Change if necessary. Check Rx and Tx on fiber optic
cable
Replace with a tested cable
Verify that all 10 Mbps connections use a Cat 5 cable
Check the port LED or zoom screen in the NMS
application, and change setting if necessary
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