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Manual Chapter : Description of log levels for QUIC log messages

Applies To:

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BIG-IP LTM

15.1.9, 15.1.8, 15.1.7, 15.1.6, 15.1.5, 15.1.4, 15.1.3, 15.1.2, 15.1.1, 15.1.0

Description of log levels for QUIC log messages

This table describes each log level and gives some examples of messages that might be logged for each log level.

Level	Description	Sample log messages
Critical	Non-protocol-related errors that would preclude healthy operation of the traffic filter.	hud_quic_init errors quic_init errors TLS errors Stream initialization errors Closing connection with INTERNAL_ERROR
Error	Protocol-related errors that would prevent a connection from proceeding as expected.	Encrypt/decrypt errors; AEAD errors CONNECTION_CLOSE that is not of error_code=0x0 (NO_ERROR) Packet parsing errors Frame parsing errors Packet drops due to parsing or memory allocation issues Host unreachable
Warning	Protocol-related issues that don't necessarily violate the spec, but which may result in sub-optimal connection.	Missing transport parameters Address validation errors
Notice	Connection-level logging.	New connection established (log src, dst IP:port and connection IDs, token) Connection state changes (transition from initial->handshake->1-RTT) Congestion control enabled/disabled Connection terminated Retry limits (or other thresholds exceeded, similar to SYN cookie activation/deactivation) Initiation of address or path validation Success/Failure of path validation (and reason for failure) Sending VN Connection migration detected Connection lookup messages Packet drops due to being in the wrong state
Info	Stream-level logging.	Stream establishment Stream state changes Stream reset/close
Debug	Other.	TLS key material Log secrets, sufficient to generate an SSLKEYLOG file for use with wireshark xbuf_move errors Other miscellaneous logging

Logging QUIC messages