Ip Dhcp Snooping Binding - Cisco 4500M Command Reference Manual

Chapter2 Cisco IOS Commands for the Catalyst 4500 Series Switches

ip dhcp snooping binding

To set up and generate a DHCP binding configuration to restore bindings across reboots, use the ip dhcp
snooping binding command. To disable the binding configuration, use the no form of this command.
Syntax Description
mac-address
vlan vlan-#
ip-address
interface interface
expiry seconds
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History Release
12.1(19)EW
Usage Guidelines
Whenever a binding is added or removed using this command, the binding database is marked as changed
and a write is initiated.
Examples
This example shows how to generate DHCP binding configuration on interface gi1/1 in VLAN 1 with
an expiration time of 1000 seconds:
Switch# ip dhcp snooping binding 0001.1234.1234 vlan 1 172.20.50.5 interface gi1/1 expiry 1000
Related Commands
ip dhcp snooping
ip dhcp snooping information option
ip dhcp snooping trust
ip dhcp snooping vlan
show ip dhcp snooping
show ip dhcp snooping binding
78-16201-01
ip dhcp snooping binding mac-address vlan vlan-# ip-address interface interface expiry seconds
no ip dhcp snooping binding mac-address vlan vlan-# ip-address interface interface
Specifies a MAC address.
Specifies a valid VLAN number.
Specifies an IP address.
Specifies an interface type and number.
Specifies the interval (in seconds) after which binding is no longer valid.
Modification
Support for this command was introduced on the Catalyst 4500 series switch.
Catalyst4500 Series SwitchCiscoIOS Command Reference—Release 12.2(18)EW
ip dhcp snooping binding
2-125