Users Guide

clear ip dhcp snooping binding
Clears the dynamic entries in the DHCP snooping binding table.
Syntax
clear ip dhcp snooping binding [mac mac-address] [vlan vlan-id] [interface
{ethernetslot/port/sub-port> | port-channel port-channel-id}]
Parameters
• mac mac-address—Enter mac and the MAC address of the host to which the server is leasing the IP
address.
• vlan vlan-id—Enter vlan and the VLAN ID. The range is from 1 to 4093.
• interface type—Enter interface and the interface type information. You can enter a physical, a
VLAN, or a port-channel interface.
Defaults None
Command Mode EXEC
Usage Information
This command clears the dynamic entries in the DHCP snooping binding table.
CAUTION: Clearing the DHCP snooping binding table using the clear ip dhcp snooping binding command
also clears the SAV and DAI entries on the system. This aects the trac from clients that are
connected to the DHCP snooping-enabled VLANs.
Example (Global)
OS10# clear ip dhcp snooping binding
Example (MAC)
OS10# clear ip dhcp snooping binding mac 04:56:79:86:73:fe
Example (Port
Channel)
OS10# clear ip dhcp snooping binding mac 04:56:79:86:73:fe vlan 100 port-
channel 10
Supported Release 10.5.0.0 or later or later
ip dhcp snooping (global)
Enables DHCP snooping globally.
Syntax
ip dhcp snooping
Parameters None
Defaults Disabled
Command Mode CONFIGURATION
Usage Information
When you enable this feature, the switch begins to monitor all transactions between DHCP servers and DHCP
clients and use the information to build the DHCP snooping binding table.
If you disable DHCP snooping, the system removes the DHCP snooping binding table. Source Address Validation
and Dynamic ARP Inspection entries are also removed.
This command is accessible to users with sysadmin and secadmin roles.
The no version of this command disables DHCP snooping globally.
194 System management