30 Contents27 Snooping and Inspecting Traffic . . . . . . 743Traffic Snooping and Inspection Overview . . . . . . 743What Is DHCP Snooping? . . . . . . . . . . . . . 744How Is the DHCP Snooping Bindings DatabasePopulated? . . . . . . . . . . . . . . . . . . . . 745What Is IP Source Guard? . . . . . . . . . . . . 747What is Dynamic ARP Inspection? . . . . . . . . 748Why Is Traffic Snooping and InspectionNecessary? . . . . . . . . . . . . . . . . . . . . 749Default Traffic Snooping and Inspection Values . . . 749Configuring Traffic Snooping and Inspection(Web) . . . . . . . . . . . . . . . . . . . . . . . . . . 751DHCP Snooping Configuration . . . . . . . . . . 751DHCP Snooping Interface Configuration . . . . . 752DHCP Snooping VLAN Configuration . . . . . . . 754DHCP Snooping Persistent Configuration . . . . 756DHCP Snooping Static BindingsConfiguration . . . . . . . . . . . . . . . . . . . 757DHCP Snooping Dynamic BindingsSummary . . . . . . . . . . . . . . . . . . . . . 759DHCP Snooping Statistics . . . . . . . . . . . . 760IPSG Interface Configuration . . . . . . . . . . . 761IPSG Binding Configuration. . . . . . . . . . . . 762IPSG Binding Summary . . . . . . . . . . . . . . 763DAI Global Configuration . . . . . . . . . . . . . 764DAI Interface Configuration . . . . . . . . . . . 765DAI VLAN Configuration . . . . . . . . . . . . . 767DAI ACL Configuration . . . . . . . . . . . . . . 768DAI ACL Rule Configuration. . . . . . . . . . . . 769DAI Statistics . . . . . . . . . . . . . . . . . . . 771Configuring Traffic Snooping and Inspection(CLI) . . . . . . . . . . . . . . . . . . . . . . . . . . 772Configuring DHCP Snooping . . . . . . . . . . . 772
