TP-Link T2500G-10MPS T2500G-10MPSUN V1 Configuration Guide - Page 609

Configuring Network Security DHCP Snooping Configuration Step 7 Step 8 Step 9 show ip dhcp snooping interface [ gigabitEthernet port | port-channel port-channel-id ] Verify the DHCP Snooping configuration of the port. end Return to privileged EXEC mode. copy running-config startup-config Save the settings in the configuration file. The following example shows how to configure port 1/0/1 as a trusted port, enable the MAC verify feature, and set the limit rate as 10 pps and decline rate as 20 pps on this port: Switch#configure Switch(config)#interface gigabitEthernet 1/0/1 Switch(config-if)#ip dhcp snooping trust Switch(config-if)#ip dhcp snooping mac-verify Switch(config-if)#ip dhcp snooping limit rate 10 Switch(config-if)#ip dhcp snooping decline rate 20 Switch(config-if)#show ip dhcp snooping interface gigabitEthernet 1/0/1 Interface Trusted MAC-Verify Limit-Rate Dec-rate LAG Gi1/0/1 Enable Enable 10 20 N/A Switch(config-if)#end Switch#copy running-config startup-config 3.2.3 (Optional) Configuring Option 82 Option 82 records the location of the DHCP client. The switch can add the Option 82 to the DHCP request packet and then transmit the packet to the DHCP server. Administrators can check the location of the DHCP client via option 82. The DHCP server supporting Option 82 can also set the distribution policy of IP addresses and other parameters, providing more flexible address distribution way. Follow these steps to configure Option 82: Step 1 configure Enter global configuration mode. Configuration Guide 582