Which mnemonic in Cisco IOS logs indicates that a packet matching the access list criteria has been detected?

The mnemonic %SEC-6-IPACCESSLOGP in Cisco IOS logs is specifically designed to indicate that a packet matching the access control list (ACL) criteria has been detected. This logging statement is generated when an IP packet is permitted by an access list rule. The 'SEC' portion of the mnemonic outlines that it relates to security events, the '6' indicates the severity level of the message, and 'IPACCESSLOGP' signifies that it involves logging packets that are allowed.

This particular logging framework allows network administrators to monitor and troubleshoot network traffic effectively, especially in relation to security policies set by ACLs. Administrators can use these logs to verify that the intended traffic is flowing as expected based on the configured access lists.

The other options represent different types of log messages with varying contexts or functions, but none specifically denote the detection of a packet matching access list criteria. Understanding this helps administrators in both managing network security and ensuring that access policies are functioning as intended.