TP-Link T1500-28PCT User Manual page 723

Configuring DHCP Filter
Step 7
Step 8
Step 9
Step 10
Step 11
Note:
The member port of an LAG (Link Aggregation Group) follows the configuration of the LAG and not its
own. The configurations of the port can take effect only after it leaves the LAG.
The following example shows how to enable DHCPv4 Filter globally and how to enable
DHCPv4 Filter, enable the MAC verify feature, set the limit rate as 10 pps and set the
decline rate as 20 pps on port 1/0/1:
Switch#configure
Switch(config)#ip dhcp filter
Switch(config)#interface gigabitEthernet 1/0/1
Switch(config-if)#ip dhcp filter
Switch(config-if)#ip dhcp filter mac-verify
Switch(config-if)#ip dhcp filter limit rate 10
Switch(config-if)#ip dhcp filter decline rate 20
Switch(config-if)##show ip dhcp filter
Global Status: Enable
Switch(config-if)#show ip dhcp filter interface gigabitEthernet 1/0/1
ip dhcp filter decline rate value
Enable the decline protect feature and specify the maximum number of Decline packets
can be forwarded per second on the port. The excessive Decline packets will be discarded.
value: Specify the limit rate value of Decline packets. The following options are provided: 0,
5,10,15,20,25 and 30 (packets/second). The default value is 0, which indicates disabling this
feature.
show ip dhcp filter
Verify the global DHCPv4 Filter configuration.
show ip dhcp filter interface [ fastEthernet port | gigabitEthernet port | ten-
gigabitEthernet port | port-channel port-channel-id ]
Verify the DHCPv4 Filter configuration of the port.
end
Return to privileged EXEC mode.
copy running-config startup-config
Save the settings in the configuration file.
DHCPv4 Filter Configuration
Configuration Guide 700