Which command enables conditional debugging based on an access list?
- debug ip packet detail
- debug ip packet 101
- debug condition interface
- debug ip packet
Explanation: According to standard Cisco IOS operations (often referenced in troubleshooting contexts like Section 21.6), the debug ip packet command is highly CPU-intensive as it processes every IP packet passing through the router. To make this tool safe for production environments, conditional debugging can be employed by appending an Access Control List (ACL) number to the command, such as debug ip packet 101. This instructs the router to only generate debug messages for traffic that matches the permit statements within ACL 101, effectively filtering the output and reducing the impact on the device's processor.
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