en:dpi:dpi_options:brass:opt_bras:reference_bras:param_bras [Документация VAS Experts]
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    en:dpi:dpi_options:brass:opt_bras:reference_bras:param_bras [2020/02/05 17:38] – ↷ Page moved from en:dpi:dpi_options:base_functionality:brass:opt_bras:reference_bras:param_bras to en:dpi:dpi_options:brass:opt_bras:reference_bras:param_bras lexx26en:dpi:dpi_options:brass:opt_bras:reference_bras:param_bras [2020/03/18 14:54] (current) – removed lexx26
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    -======7 BRAS parameters ====== 
    -{{indexmenu_n>7}} 
    - 
    -==== BRAS fields in the fastdpi.conf ==== 
    - 
    -^ Field ^ Format ^ Description ^ 
    -|bras_max_session_duration|seconds|The default value is 604800. It is the maximum Subscriber session length, in seconds. When the session maximum duration is exceeded, the FastDPI will respond by DHCP-Nak reject to a DHCP-Request of lease renewal, thereby forcing the Subscriber device to start a new session by sending DHCP-Discover.| 
    -|bras_loglevel|number|It specifies the log level when writing to the /var/log/dpi/fastdpi_bras.log:\\ 3 - Error;\\  4 - Warning;\\  5 - Info;\\  7 - Trace.\\ The higher the log level, the more detailed the log. The log level is 5 by default, using this value only warnings and errors will be written to the fastdpi_bras.log. Log level 7 (Trace) will create a detailed log with all DHCP packets, which is very useful when implementing BRAS.| 
    -|bras_log|string|Specifies the full name of the DHCP log file, the default value is /var/log/dpi/fastdpi_bras.log. This parameter cannot be changed on the fly, so once it changed you should restart the VAS Expert DPI.| 
    -|bras_dhcp_trace_mac|MAC address|Specifies the client MAC address for tracing DHCP packets. All DHCP traffic for the given MAC address will be written to a pcap file. For example: a0:b1:c2:d3:00:0a. Only one MAC address can be specified for a DHCP trace at a time. The pcap file is created in the /var/dump/dpi directory. In this case, other [[en:dpi:dpi_options:opt_li:li_settings:start|pcap capture options]] also can be enabled, since all the traced packets are written to one pcap file. This parameter is provided to help solve problems with specific subscriber device: if the client device does not receive an IP address for whatever reason, you can pass this device MAC address to a trace and analyse which DHCP packets come to BRAS and which DHCP responses it sends back.|