158 DHCP SnoopingSyntax• ip dhcp snooping binding mac-address vlan-id ip-address {ethernet interface | port-channel port-channel-number} expiry seconds• no ip dhcp snooping database binding mac-address vlan-id• mac-address — Specifies a MAC address.• vlan-id — Specifies a VLAN number.• ip-address — Specifies an IP address.• interface — Specifies an Ethernet port.• port-channel-number — Specifies a Port-channel number.• expiry seconds — Specifies the interval, in seconds, after which the binding entry is no longervalid. (Range 10 – 4294967295 seconds)Default ConfigurationThe default configuration is that no static binding exists.Command ModePrivileged EXEC mode.User Guidelines• After entering this command an entry is added to the DHCP snooping database. If a DHCP snoopingbinding file exists, the entry is also added to that file.• The entry is displayed in the show commands as a “DHCP Snooping entry”.ExampleThe following example configures the DHCP snooping binding database and adds binding entries to thedatabase.clear ip dhcp snooping databaseThe clear ip dhcp snooping database Privileged EXEC mode command clears the DHCP snoopingbinding database.Syntax• clear ip dhcp snooping databaseConsole# ip dhcp snooping binding 3aa2.64b3.a245 1000131.108.1.27 ethernet 1/e16 expiry 3000book.book Page 158 Thursday, December 18, 2008 7:40 PM
