The level of detail in the logs is set by the trace parameter in the /etc/dpi/fastpcrf.conf configuration file.

The trace parameter is a bitmask, where each bit enables detailed logging for a specific subsystem:

• 0x00000001 — connection monitor — RADIUS connection monitor. Monitors connection activity and decides to switch to a backup RADIUS server if necessary.
• 0x00000002 — task scheduler — internal task scheduler.
• 0x00000010 — auth server — responsible for receiving authorization requests from fastDPI (fastDPI → fastPCRF communication).
• 0x00000200 — radius_client connections — detailed logging of Access-Request queries and Access-Accept/Reject responses.
• 0x00000400 — radius_client monitor — logging of Server-Status requests checking RADIUS server liveliness and responses to them.
• 0x00001000 — CoA server — CoA event logging.
• 0x00002000 — CoA listener - creation of connections with CoA clients.
• 0x00004000 — CoA processor - detailed logging of CoA requests.
• 0x00010000 — fdpi_ctl - logging of events for sending data to fastDPI (fastPCRF → fastDPI communication).
• 0x00020000 — fdpi_crl FIFO - events of the message queue from fastPCRF to fastDPI. CoA requests that need to be sent to all fastDPI servers enter this queue.
• 0x00100000 — logging of start/stop accounting sending.
• 0x00200000 — logging of interim update accounting sending.
• 0x00400000 — logging of receiving raw accounting data from fastDPI.

FastPCRF logs its actions to the /var/log/dpi directory.

Log purposes:

Log of fastPCRF startup/shutdown. If any errors occurred during startup/stop, you will see them in this log.

Log of receiving authorization requests from fastDPI (fastDPI → fastPCRF communication):

• connection errors with fastDPI;
• traces of authorization requests received from fastDPI;
• traces of receiving accounting data from fastDPI.

CoA log:

• connections with CoA clients;
• receiving and processing CoA requests;
• communication with DHCP and DHCPv6 servers when processing Framed-Pool and Framed-IPv6-Pool attributes.

Interaction with RADIUS authorization servers:

• connection and disconnection of RADIUS servers;
• Access-Request authorization queries;
• Access-Accept/Reject responses.

Accounting log:

• connection and disconnection of RADIUS accounting servers;
• maintenance of the internal accounting database;
• start/stop of subscriber accounting;
• sending accounting data.

Log of fastPCRF → fastDPI communication:

• connection with fastDPI via the control port;
• sending authorization results to SSG;
• sending CoA requests to SSG.

Internal fastPCRF statistics:

• memory allocation;
• number of requests sent to RADIUS and responses received;
• CoA statistics;
• statistics on connections with RADIUS servers and with fastDPI.

FastPCRF periodically dumps its internal statistics into this log.