Specifying logging types
You can configure the unit to log GTP packets based on their status with GTP traffic logging.
The status of a GTP packet can be any of the following 5 states:
• Forwarded - a packet that the unit transmits because the GTP policy allows it
• Prohibited - a packet that the unit drops because the GTP policy denies it
• Rate-limited - a packet that the unit drops because it exceeds the maximum rate limit of the destination GSN
• State-invalid - a packet that the unit drops because it failed stateful inspection
• Tunnel-limited - a packet that the unit drops because the maximum limit of GTP tunnels for the destination GSN is reached.
The following information is contained in each log entry:
• Timestamp
• Source IP address
• Destination IP address
• Tunnel Identifier (TID) or Tunnel Endpoint Identifier (TEID)
• Message type
• Packet status: forwarded, prohibited, state-invalid, rate-limited, or tunnel-limited
• Virtual domain ID or name
• Reason to be denied if applicable.