Brand: Cisco
Category: Networking
Document Type: Manual
Language: EN
Manual for Catalyst 9200
Uploaded: Nov. 21, 2025, 7:46 p.m.
Manual Publish Date: 2018-12-10
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System Time and Date Management
You can manage the system time and date on your device using automatic configuration methods (RTC and NTP), or manual configuration methods.
System Clock
The basis of the time service is the system clock. This clock runs from the moment the system starts up and keeps track of the date and time.
The system clock can then be set from these sources:
- NTP
- Manual configuration
The system clock can provide time to these services:
- User show commands
- Logging and debugging messages
Troubleshooting and error codes
| Type of Problem | Cause | Corrective Action |
|---|---|---|
| Interrupt percentage value is almost as high as total CPU utilization value. | The CPU is receiving too many packets from the network. | Determine the source of the network packet. Stop the flow, or change the switch configuration. See the section on “Analyzing Network Traffic." |
| Total CPU utilization is greater than 50% with minimal time spent on interrupts. | One or more Cisco IOS process is consuming too much CPU time. This is usually triggered by an event that activated the process. | Identify the unusual event, and troubleshoot the root cause. See the section on “Debugging Active Processes.” |