Cisco Cisco Firepower Management Center 2000 문제 해결 가이드

FireSIGHT Management Center displays health alerts on the web interface.

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The Health Monitor page shows an appliance as critial, because the status of Time
Synchronization Module is out-of-sync.

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You may see intermittent health alerts if the appliances fail to stay synchronized.

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After applying a system policy, you may see health alerts, becasue a FireSIGHT Management
Center and its managed devices may take up to 20 minutes to complete synchronization. This
is because a FireSIGHT Management Center must first synchronize with its configured NTP
server before it can serve time to a managed device.

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The time between a FireSIGHT Management Center and a managed device does not match.

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Events generated at the sensor may take minutes or hours to become visible on a FireSIGHT
Management Center.

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If you are running virtual appliances, and the Health Monitor page indicates that the clock
setup for your virtual appliance is not synchronized, check your system policy time
synchronization settings. Cisco recommends that you synchronize your virtual appliances to a
physical NTP server. Do not synchronize your managed devices (virtual or physical) to a
Virtual Defense Center.

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Verify that NTP is enabled on the system policy that is applied on the FireSIGHT Systems. In
order to verify that, follow the steps below:

Navigate to System > Local > System Policy.

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Edit the system policy applied on your FireSIGHT Systems.

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Select Time Synchronization.

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