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    en:dpi:dpi_options:opt_priority:priority_settings [2020/02/05 17:30] – ↷ Page moved from en:dpi:dpi_options:base_functionality:opt_priority:priority_settings to en:dpi:dpi_options:opt_priority:priority_settings lexx26en:dpi:dpi_options:opt_priority:priority_settings [2024/09/26 15:29] (current) – external edit 127.0.0.1
    Line 1: Line 1:
    -====== 2 Configuration ======+====== Configuration ======
     {{indexmenu_n>2}} {{indexmenu_n>2}}
      
     +=====Configuring DSCP markup in IP/VLAN/MPLS headers=====
     +The option is configured or disabled by editing the configuration file **/etc/dpi/fastdpi.conf**.
     +
     +<note warning>This is a cold parameter which requires restart of service!</note>
     + 
     +Enable prioritizing markup of a traffic on level:
     +
     +<code>
     +set_packet_priority=1
     +</code>
     +
     +  * 1 - IP header
     +  * 2 - VLAN/QinQ header
     +  * 3 - MPLS header
     +
     +
     +<note important>set_packet_priority=1 leads to patching of all packets that pass through DPI to set the priority in their headers. This operation takes a lot of resources. Therefore do not switch this flag on until you do not need to use these modified priorities on other network devices.</note>
     +
     +Configuration parameters from [[en:dpi:dpi_options:opt_priority:priority_config|Assignment of priorities]] are sufficient for internal DPI usage.
     +
     +===== Configuring DSCP Inheritance and Conversion =====
     +<note important>Not compatible with ''[[dpi:dpi_options:opt_priority:priority_settings#настройка_разметки_dscp_в_ip_vlan_mpls_заголовках|set_packet_priority]]'' — he's a priority..</note>
     +It is configured in the ''/etc/dpi/fastdpi.conf'' configuration file.
     +<code bash>
     +forward_packet_priority=<bitmask>
     +</code>
     +Bit masks:
     +  * Depending on the direction: 
     +    * 1 — conversion is applied to outbound traffic (subs->inet)
     +    * 2 — conversion is applied to outbound traffic (inet->subs)
     +  * Depending on the objects of conversion:
     +    * 4 — Conversion between VLAN and IP
     +    * 8 — IP to IP conversion
     +
     +If no conversion file is specified (no ''/etc/dpi/dscpfrw.bin'' file), VLAN<->IP conversion is performed without conversion, i.e. the priority that was in the header (3 bits) is transferred to the other header (IP or VLAN) as it is.\\
     +If a conversion file is specified, a priority conversion is performed according to the rules specified in the file.
     +
     +====Setting the priority conversion file====
     +<code bash>
     +vi test.txt
     +in cs0 cs1
     +in cs1 cs2
     +in cs2 keep
     +in default cs3
     +out default keep
     +out 0x1 0x2
     +out 0x2 0x3
     +out cs0 0x3F
     +
     +cat test.txt|forw2dscp test.bin 
     +cp test.bin /etc/dpi/dscpfrw.bin
     +</code>