You should manually set the system clock or configure it by using Network Time Protocol (NTP).
When the device is running, you can retrieve the OBFL data by using the show logging onboard privileged
EXEC commands. If the device fails, contact your Cisco technical support representative to find out how to
retrieve the data.
When an OBFL-enabled device is restarted, there is a 10-minute delay before logging of new data begins.
Fan Failures
By default, the feature is disabled. When more than one of the fans fails in a field-replaceable unit (FRU) or
in a power supply, the device does not shut down, and this error message appears:
WARNING:Fan PS1/0 in slot 1 has the error: Error Status,
Please replace it with a new fan.
The device might overheat and shut down.
When an individual fan fails, the following message appears:
The fan in slot PS17/1 is encountering a failure condition
The following messages appears when the entire fan tray fails and the system shuts down:
Shutting down system now because the fans in slot PS17 have all failed.
To restart the device, it must be power cycled.
For more information on Fan failures, referCisco Catalyst 9400 Series Switches Hardware Installation Guide
.
Possible Symptoms of High CPU Utilization
Excessive CPU utilization might result in these symptoms, but the symptoms might also result from other
causes, some of which are the following:
• Spanning tree topology changes
• EtherChannel links brought down due to loss of communication
• Failure to respond to management requests (ICMP ping, SNMP timeouts, slow Telnet or SSH sessions)
• UDLD flapping
• IP SLAs failures because of SLAs responses beyond an acceptable threshold
• DHCP or IEEE 802.1x failures if the switch does not forward or respond to requests
System Management Configuration Guide, Cisco IOS XE Bengaluru 17.4.x (Catalyst 9400 Switches)
397
Troubleshooting the Software Configuration
Fan Failures
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