IP source guard [Документация VAS Experts]
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    en:dpi:bras_bng:bras_l2_options:bras_l2_vlan_ipsg [2026/03/03 13:58] – elena.krasnobryzhen:dpi:bras_bng:bras_l2_options:bras_l2_vlan_ipsg [2026/03/03 14:01] (current) – [Purpose] elena.krasnobryzh
    Line 5: Line 5:
     FastDPI BNG verifies the consistency between subscriber VLAN tags and the subscriber IP address. FastDPI BNG verifies the consistency between subscriber VLAN tags and the subscriber IP address.
      
    -When assigning an IP address via DHCP, FastDPI BNG stores the subscriber VLAN/QinQ tags in the built-in [[en:dpi:dpi_components:platform:dpi_admin:admin_db#активация_встроенной_бд|UDR]] database. These data are later used to validate the correspondence between the packet source IP and its VLAN tags.+When assigning an IP address via DHCP, FastDPI BNG stores the subscriber VLAN/QinQ tags in the built-in [[en:dpi:dpi_components:platform:dpi_admin:admin_db#activation_of_built-in_udr|UDR]] database. These data are later used to validate the correspondence between the packet source IP and its VLAN tags.
      
     IP source guard is applied only to outbound traffic (LAN → WAN). IP source guard is applied only to outbound traffic (LAN → WAN).