PCAP Recording Management and VLAN Mirroring [Документация VAS Experts]
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    en:dpi:dpi_components:platform:li_ctrl [2026/07/02 14:09] – removed - external edit (Unknown date) 127.0.0.1en:dpi:dpi_components:platform:li_ctrl [2026/07/02 14:09] (current) – ↷ Page moved from en:dpi:dpi_options:opt_li:li_ctrl to en:dpi:dpi_components:platform:li_ctrl elena.krasnobryzh
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     +{{tag>Services "Service 12" "PCAP Recording" "Service 17" "VLAN Mirroring"}}
     +====== PCAP Recording Management and VLAN Mirroring ======
     +{{indexmenu_n>16}}
     +===== PCAP Recording Management =====
     +Service 12 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 Service 12, PCAP is recorded at the subscriber level, after the processing, policing, and services have been applied to the subscriber.</note>
     +
     +When the parameter ''ajb_reserved=1'' is active, you can control the start and stop of the recording on the platform using the SM utility ''fdpi_ctrl'':
     +<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:
     +<code bash>
     +fdpi_ctrl del --service 12 --ip 192.168.1.1
     +fdpi_ctrl del --service 12 --login USER101
     +</code>
     +
     +To quickly search for data in the PCAP file, you can create a file with indexable data by enabling the setting in ''/etc/dpi/fastdpi.conf'':
     +<code bash>
     +ajb_pcap_ind_mask=1
     +</code>
     +Where:
     +  * 0 - index is not created (default)
     +  * 1 - by IPv4
     +  * 2 - by IPv6
     +  * 3 - by IPv4 and IPv6
     +
     +<note important>If other recording methods for the same subscriber, ''ajb_save_udpi'' or ''ajb_save_ip'', are enabled, the resulting index will not write ''SESSION_ID''</note>
     +<note>The minimum PCAP file size is 100 MB</note>
     +
     +===== VLAN Mirroring =====
     +Service 17 includes mirroring subscriber traffic to a specific VLAN, which is added to the data ports of SSG. The traffic direction is preserved.
     +
     +Configuration in ''fastdpi.conf'':
     +<code bash>
     +span_vlan=123
     +</code>
     +
     +For diagnostics, you can use one of the parameters in ''fastdpi.conf'':\\
     +:!: These are hot parameters, enabled and disabled with ''reload''
     +<code bash>
     +trace_ip
     +span_trace
     +ajb_save_emit
     +</code>
     +
     +Enabling VLAN mirroring:
     +<code bash>
     +fdpi_ctrl load --service 17 --ip 192.168.1.1
     +fdpi_ctrl load --service 17 --login USER101 </code>
     +
     +Disabling VLAN mirroring:
     +<code bash>
     +fdpi_ctrl del --service 17 --ip 192.168.1.1
     +fdpi_ctrl del --service 17 --login USER101
     +</code>
     +
     +<note important>If both services 12 and 17 are enabled, the PCAP will show both the original and mirrored recordings.</note>