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    en:dpi:dpi_options:opt_priority:priority_settings:start [2024/04/10 15:36] – elena.krasnobryzhen:dpi:dpi_options:opt_priority:priority_settings:start [Unknown date] (current) – removed - external edit (Unknown date) 127.0.0.1
    Line 1: Line 1:
    -====== Configuration ====== 
    -{{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:start|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:start#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>