Radius events monitor is configured by the file /etc/dpi/fdpi_radius.conf.

The interfaces available for configuring have names in format dna<digit>.

The complete configuration file:

# FastDPI RADIUS configuration parameters
#
in_dev=dna0
#out_dev=dna1 - the name of the output interface if Monitor runs in pass through mode
#rad_server_emulation=1 - enable emulation of back up Radius server
#rad_virtual_eth=172.17.69.10/D4:AE:52:C1:A7:29 - enable emulation of a network card
#rad_secret=mysecretkey - secret value to generate replies in Radius server emulation mode
#rad_prefix_info=1 - append regional prefixes to subscribers' names (LOGIN)

rad_acct_port=1646 - port number (or several ports divided by a comma) to listen to Radius Accounting packets
#rad_auth_port=1645 - port number (or several ports divided by a comma) to listen to Radius Authentication packets
#rad_save_pdu=1 - store bad PDU in pcap format for analysis
rad_check_code_pdu=2:4 - check PDU with codes 2 and 3
rad_check_acct_status_type=1:3 - check PDU having status 1 and 3

mem_preset=1 - initialize memory upon start

#
# fdpi_servers The list of DPI servers in the cluster
#
fdpi_servers=123.45.67.83:29000,123.45.67.85:29000

Please check administration chapter as well.