Operation Manual – DHCPH3C S3100 Series Ethernet Switches Chapter 2 DHCP Snooping Configuration2-7table or static binding table, the switch regards the packet as a valid packet andforwards it; otherwise, the switch drops it directly.2.2 DHCP Snooping Configuration2.2.1 Configuring DHCP SnoopingTable 2-3 Configure DHCP snoopingOperation Command DescriptionEnter system view system-view —Enable DHCPsnooping dhcp-snoopingRequiredBy default, the DHCP snoopingfunction is disabled.Note:z After DHCP snooping is enabled on an S3100 Ethernet switch, clients connectedwith this switch cannot obtain IP addresses dynamically through BOOTP.z You are not recommended to configure both the DHCP snooping and selectiveQ-in-Q function on an S3100-EI switch, which may result in the DHCP snooping tofunction abnormally.2.2.2 Configuring DHCP Snooping Trusted/Untrusted PortsTable 2-4 Configure DHCP Snooping Trusted/Untrusted PortsOperation Command DescriptionEnter system view system-view —Enter Ethernet portviewinterface interface-typeinterface-number —Specify the currentport as a trusted port dhcp-snooping trustRequiredBy default, after DHCP snoopingis enabled, all ports of theS3100-EI switch are untrustedports.
