Priority assignment depending on the directions [Документация VAS Experts]
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    en:dpi:dpi_options:opt_priority:priority_config_as:start [2023/10/13 14:26] – ↷ Links adapted because of a move operation elena.krasnobryzhen:dpi:dpi_options:opt_priority:priority_config_as:start [Unknown date] (current) – removed - external edit (Unknown date) 127.0.0.1
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    -====== Priority assignment depending on the directions ====== 
    -{{indexmenu_n>4}} 
    -The direction is defined by a number of an autonomous system that sends or receives the traffic.  
    -:!: The direction priority specified for autonomous system (if defined) overrides the priority specified by protocol. 
    -:!: The direction priority specified for the traffic's source (if defined) overrides the priority specified for the destination. 
      
    -<note important>One can change the IP list that belongs to an autonomous system and define an auxiliary autonomous system dynamically. It is described in the section [[en:dpi:dpi_options:opt_statistics:statistics_asn:start|Configuring autonomous systems]]</note> 
    - 
    -The direction dependent priorities assigned by the system's administrator, are loaded by DPI from the file **/etc/dpi/asnum.dscp.** 
    - 
    -<note warning>Comments in this file are not allowed!</note> 
    - 
    -This file is created in two steps. First, the text file with a list of autonomous systems and their assigned priorities is created. Next, this file is converted into an internal format by a dedicated utility. 
    - 
    -===== File format of autonomous systems' list and their priorities: ===== 
    - 
    -Each line of the file contains: AS_number <space> dscp_value. **For example:** 
    -<code> 
    -64512       cs0 
    -64512       local 
    -64513       drop 
    -64514       pass 
    -64514       peer 
    -</code> 
    -  * Here cs0 - is [[en:dpi:dpi_options:opt_priority:priority_config:dscp_table|DSCP value]].\\  
    - 
    -Keywords meaning: 
    -  * drop - means that packets have not to be transmitted: they must be dropped. 
    -  * pass - the traffic of this autonomous system must go through DPI with no analysis and processing. 
    -  * local - the traffic of this system is treated as a local operator's one, see [[en:playground:opt_bras_l3:bras_steps:radius_auth_setup:start|BRAS L3]] 
    -  * peer - the operator is in peering state with this system; used only for [[en:dpi:dpi_options:opt_cache:start|Cash option]] 
    -  * term - termination is allowed for this AS; see [[en:dpi:bras_bng:bras_l2_vlan_term:bras_l2_vlan_term_as|BRAS: AS termination]] 
    - 
    -<note important>local, term and peer do not effect the traffic's priority and are used for services. They are described there.</note> 
    - 
    -===== File convertation ===== 
    - 
    -To convert this file into the internal format and to place it into the working directory for DPI usage: 
    -<code>cat my_as_dscp.txt|as2dscp /etc/dpi/asnum.dscp 
    -service fastdpi reload 
    -</code> 
    -<note important>This configuration is loaded on the run, with no need to restart the servic 
    -===== Configuration for local traffic ===== 
    -To allow the transit of local operator traffic through the DPI without analysing and processing: 
    -<code>local_passthrough=1</code> 
    - 
    -To place the local operator traffic in a separate class: 
    -<code>local_dscp=0x38</code>  
    -dscp is set in a numerical form, the [[en:dpi:dpi_options:opt_priority:priority_config:dscp_table|reference table]] provides correspondence between the numeric and letter symbols.\\  
    - 
    -<note important>local_dscp setting takes precedence over the local_passthrough (if both are specified, the local_dscp is active)</note> 
    - 
    -Autonomous system traffic within its class [[en:dpi:dpi_options:opt_bandwidth_mgmt:bandwidth_conf:start|can be limited]] regardless of the basic service plan limitation.