Command Groups 39DHCP Snooping CommandsEthernet Configuration CommandsCommand Group Description Access Modeip dhcp snooping Globally enables Dynamic Host ConfigurationProtocol (DHCP) snoopingGlobalConfigurationip dhcp snooping vlan Enables DHCP snooping on a VLAN. GlobalConfigurationip dhcp snooping trust Configures a port as trusted for DHCP snoopingpurposes.InterfaceConfiguration(Ethernet,port-channel)ip dhcp snoopinginformation optionallowed-untrustedConfigures a switch to accept DHCP packets withoption-82 information from an untrusted port.GlobalConfigurationip dhcp snooping verify Configures the switch to verify that on an untrustedport the source MAC address in a DHCP packetmatches the client hardware address.GlobalConfigurationip dhcp snooping database Configures the DHCP snooping binding file. GlobalConfigurationip dhcp snooping databaseupdate-freqConfigures the update frequency ofthe DHCPsnooping binding file.GlobalConfigurationip dhcp snooping binding Configures the DHCP snooping binding database andto add binding entries to the database.Privileged EXECclear ip dhcp snoopingdatabaseClears the DHCP binding database. Privileged EXECshow ip dhcp snooping Displays the DHCP snooping configuration. EXECshow ip dhcp snoopingbindingDisplay the DHCP snooping binding database andconfiguration information for all interfaces on aswitch.EXECCommand Group Description Access Modeinterface ethernet Enters the Interface Configuration mode to configurean Ethernet type interface.GlobalConfigurationinterface range ethernet Enters the Interface Configuration mode to configuremultiple Ethernet type interfaces.GlobalConfigurationshutdown Disables interfaces. InterfaceConfiguration5400_CLI.book Page 39 Wednesday, December 17, 2008 4:33 PM
