CLI Reference Guide-R04

Chapter 9 | General Security Measures
DHCPv4 Snooping
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Example
This example sets port 5 to use VLAN flooding.
Console(config)#interface ethernet 1/5
Console(config-if)#ip dhcp snooping vlan-flooding
Console(config-if)#
clear ip dhcp
snooping binding
This command clears DHCP snooping binding table entries from RAM. Use this
command without any optional keywords to clear all entries from the binding
table.
Syntax
clear ip dhcp snooping binding [mac-address ipv4-address]
mac-address - Specifies a MAC address entry.
(Format: xx-xx-xx-xx-xx-xx or xxxxxxxxxxxx)
ipv4-address - The IP address of the device.
Command Mode
Privileged Exec
Example
Console#clear ip dhcp snooping binding 11-22-33-44-55-66 192.168.2.243
Console#
clear ip dhcp
snooping database
flash
This command removes all dynamically learned snooping entries from flash
memory.
Command Mode
Privileged Exec
Example
Console#ip dhcp snooping database flash
Console#