McAfee NS Series - Troubleshooting the Sensor

8
Troubleshooting the Sensor
This section lists some common installation problems, the possible causes, and the corresponding solutions.
Problem Possible Cause Solution
LED is o. The Sensor is turned o. Restore Sensor power.
LED is o. The Sensor port cable is
disconnected.
Check the Sensor cable connections.
Sensor is operational but is
not monitoring trac.
Network device cables have
been disconnected.
Check the cables and make sure they are
properly connected to both the network devices
and the bypass switch.
Sensor is operational but is
not monitoring trac.
The Sensor ports have not
been enabled in the Manager.
The Sensor will not monitor trac on the ports
unless the ports are enabled in the Manager.
Ports are disabled in case of Sensor failure; you
must re-enable them for Sensor monitoring to
resume.
Network or link problems. Improper cabling or port
conguration.
Make sure that the transmitting and receiving
cables are properly connected to the bypass
switch.
Runts or giants errors on
switch and routers.
Improper cabling or port
conguration.
Make sure that the transmitting and receiving
cables are properly connected to the bypass
switch.
The system fault "Switch
absent" appears in the
Manager Status page.
The Active Fail-Open Kit is
disconnected.
Check the Active Fail-Open Kit and make sure it is
properly connected to the Sensor.
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McAfee Network Security Platform
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