====== Configuration ======

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=====Configuring DSCP markup in IP/VLAN/MPLS headers=====

The option is configured or disabled by editing the configuration file **/etc/dpi/fastdpi.conf**.

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<note warning>This is a cold parameter which requires restart of service!</note>

Enable prioritizing markup of a traffic on level:

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<code>

set_packet_priority=1

</code>

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  * 1 - IP header

  * 2 - VLAN/QinQ header

  * 3 - MPLS header

​

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<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>

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Configuration parameters from [[en:dpi:dpi_options:opt_priority:priority_config|Assignment of priorities]] are sufficient for internal DPI usage.

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===== 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>