PCAP Recording Management and VLAN Mirroring [Документация VAS Experts]
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    en:dpi:dpi_options:opt_li:li_ctrl:start [2024/05/28 07:32] – elena.krasnobryzhen:dpi:dpi_options:opt_li:li_ctrl:start [Unknown date] (current) – removed - external edit (Unknown date) 127.0.0.1
    Line 1: Line 1:
    -====== PCAP Record Management and VLAN Mirroring  ====== 
    -{{indexmenu_n>4}} 
    - 
    -=====PCAP record management===== 
    -12 service includes PCAP recording for all subscriber traffic. The PCAP file is placed in the path specified in the basic configuration in ''fastdpi.conf'': 
    -<code bash>ajb_udpi_path</code> 
    - 
    -<note important>In 12 service, the PCAP is written at the subscriber level when processing has taken place and the policing and services have been applied to the subscriber.</note> 
    - 
    -One can control start and stop of the recording on the platform by SM ''fdpi_ctrl'' utility when the parameter ''ajb_reserved=1'' is set: 
    - 
    -<code bash> 
    -fdpi_ctrl setenv --ajb_save_url  1 
    -fdpi_ctrl setenv --ajb_save_udpi 1 
    -</code> 
    - 
    -Enabling PCAP recording: 
    -<code bash> 
    -fdpi_ctrl load --service 12 --ip 192.168.1.1 
    -fdpi_ctrl load --service 12 --login USER101 </code> 
    - 
    -Disabling PCAP recording: 
    -<code bash> 
    -fdpi_ctrl del --service 12 --ip 192.168.1.1 
    -fdpi_ctrl del --service 12 --login USER101 
    -</code> 
    - 
    -To quickly find data in a PCAP file, you can create a file with indexed data by turning on the settings in ''/etc/dpi/fastdpi.conf'': 
    -<code bash> 
    -ajb_pcap_ind_mask=1 
    -</code> 
    -Here: 
    -  * 0 - index is not created (default value) 
    -  * 1 - IPv4 
    -  * 2 - IPv6 
    -  * 3 - both IPv4 and IPv6. 
    - 
    -<note important>If other recording methods are enabled for this subscriber (''ajb_save_udpi'' or ''ajb_save_ip''), then ''SESSION_ID'' will be not recorded to the resulting index.</note>  
    -<note>The minimum PCAP file size is 100 MB</note> 
    - 
    -===== Mirroring on a VLAN =====  
    -17 service includes mirroring of subscriber traffic to a specific VLAN that is swept into the data ports of the SSG. the traffic direction is preserved.   
    - 
    -Setup in ''fastdpi.conf'':  
    -<code bash>  
    -span_vlan=123  
    -span_trace=1  
    -</code>  
    -  
    -You can use one of the parameters in ''fastdpi.conf'' for diagnostics:  
    -<code bash>  
    -trace_ip  
    -span_trace  
    -ajb_save_emit  
    -</code>  
    -  
    -<note important>If we set service 12 and 17, we will see the original recording and the mirrored recording in PCAP.</note>