SMC Networks VDSL2 - Manual (Page 62)

T
ROUBLESHOOTING
A-2
Ethernet port
Link indicator
does not light up
after making a
connection.
Network cable or
Ethernet device
attached to this port
may be defective.
• Verify that the switch and
attached device are powered on.
• Be sure an Ethernet cable is
plugged into both the switch and
attached device.
• Verify that the proper cable type
is used and its length does not
exceed specified limits.
• Check the network cable
connections for possible defects.
Replace the defective cable if
necessary.
VDSL port
LINK indicator
does not light up
after making a
connection.
VDSL switch,
cabling, or VDSL
switch ports may be
defective.
• Verify that the VDSL switch and
attached CPE are powered on.
• Be sure the RJ-21 cables are
plugged into the VDSL switch
and the VDSL punch-down
block/patch panel.
• Verify that the cable length does
not exceed specified limits.
• Check the cable connections on
the VDSL switch, punch-down
block/patch panel, and the VDSL
CPE for possible defects. Replace
the defective cable if necessary.
Fault is on
amber.
Fan failure,
temperature
threshold exceeded,
or other hardware
malfunction
• Have the switch replaced.
Table A-1 Diagnosing Switch Indicators
Symptom Possible Cause Action