Cisco Catalyst 9400 User Manual

Table 35: Troubleshooting CPU Utilization Problems
Corrective ActionCauseType of Problem
Determine the source of the
network packet. Stop the flow, or
change the switch configuration.
The CPU is receiving too many
packets from the network.
Interrupt percentage value is
almost as high as total CPU
utilization value.
Identify the unusual event, and
troubleshoot the root cause.
One or more Cisco IOS process is
consuming too much CPU time. This
is usually triggered by an event that
activated the process.
Total CPU utilization is greater
than 50% with minimal time spent
on interrupts.
System Management Configuration Guide, Cisco IOS XE Bengaluru 17.4.x (Catalyst 9400 Switches)
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Troubleshooting the Software Configuration
Example: Verifying the Problem and Cause for High CPU Utilization

Cisco Catalyst 9400 Specifications

General

Product Series	Catalyst 9400 Series
Layer	Layer 2/3
Operating System	Cisco IOS XE
Switch Type	Modular
Uplink Interfaces	10 Gigabit Ethernet, 40 Gigabit Ethernet, 100 Gigabit Ethernet
Stacking	No
Form Factor	Modular Chassis
Operating Temperature	0°C to 40°C (32°F to 104°F)
Redundancy	Power supplies
Security Features	MACsec
Management	Cisco DNA Center, CLI, SNMP