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
Summary of Contents for 7816M/VSW
Page 2: ......
Page 20: ...FIGURES xx ...
Page 38: ...NETWORK PLANNING 2 6 ...
Page 50: ...INSTALLING THE SWITCH 3 12 ...
Page 79: ...SPECIFICATIONS C 5 Safety CSA CUS CSA 22 2 NO 60950 1 UL60950 1 CB IEC60950 1 ...
Page 80: ...COMPLIANCES C 6 ...
Page 82: ...ORDERING INFORMATION D 2 ...
Page 90: ...GLOSSARY Glossary 8 ...
Page 94: ...INDEX Index 4 ...
Page 95: ......