en:dpi:dpi_options:brass:opt_bras:reference_bras:modes_dhcp:param_dhcp [Документация VAS Experts]
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    en:dpi:dpi_options:brass:opt_bras:reference_bras:modes_dhcp:param_dhcp [2020/02/05 17:38] – ↷ Links adapted because of a move operation lexx26en:dpi:dpi_options:brass:opt_bras:reference_bras:modes_dhcp:param_dhcp [2020/03/18 14:54] (current) – removed lexx26
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    -======3 DHCP parameters ====== 
    -{{indexmenu_n>3}} 
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    -== DHCP fields in fastdpi.conf file == 
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    -^ Field ^ Format ^ Description ^ 
    -| bras_dhcp_request_delay | seconds | The default value is 600. During the ''bras_dhcp_request_delay'' period all the DHCP-Requests to confirm or extend the lease of the IP address coming from the user devices will be processed by the FastDPI itself. It sends saved parameters from DHCP-Offer in the DHCP-Ack. | 
    -|bras_dhcp_timeout | seconds |The default value is 7. DHCP-Discover response timeout from FastPCRF.| 
    -|bras_dhcp_auth_mix| boolean type |It specifies the separate processing mode:\\ value of 0 - The RADIUS server provides only DHCP parameters in response to DHCP.\\ value of 1 - The RADIUS server provides both the DHCP and auth parameters.This is the default value.\\ In the ''bras_dhcp_auth_mix=0'' mode, L3 auth and DHCP work independently, each is responsible for its part. Both DHCP and L3 authorization requests are sent to the RADIUS server. Attributes specifying policing and service profiles are ignored  in the Radius responses to DHCP. Attributes specifying DHCP parameters are ignored in the Radius responses to L3 authorization. Remember, that to enable L3 auth, the ''enable_auth=1'' configuration parameter should be set. The ''bras_dhcp_auth_mix=1'' mode scrimps on requests to the RADIUS, but might not be applicable to some providers (for example, Session-Timeout is set for DHCP with a length of 1 monthbut auth requires value of 1 hour). ''enable_auth=1'' should be specified in the fastdpi.conf for CoA processing regardless of the ''bras_dhcp_auth_mix'' parameter value. When L3 authorization is enabled, CoA notifications about changes in subscriber profiles and the list of services enabled for the subscriber, as well as Disconnect-Request will be processed. At the same time, Disconnect-Request does not mean breaking a DHCP session (nobody takes a subscriber IP address), but subscriber authorization canceling. 
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    -|dhcp_user_psw| string|Radius passwor for the [[en:dpi:dpi_options:brass:opt_bras:reference_bras:modes_dhcp:dhcp_radius_proxy|DHCP Radius Proxy]] mode.| 
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    -== Common to all users DHCP options in the fastpcrf.conf file== 
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    -^ Field ^ Format ^ Description ^ 
    -|dhcp_netmask|IPv4 mask|Subnet mask.| 
    -|dhcp_gateway|IPv4 address|Default gateway address.| 
    -|dhcp_lease_time|number|The duration of IP address leasing in seconds.| 
    -|dhcp_mtu|number|MTU size.| 
    -|dhcp_dns|IPv4 address|DNS server address. Each DNS server is specified in a separate dhcp_dns configuration parameter. You can specify up to 16 DNS servers.| 
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