TP-Link T2600G-18TSTL-SG3216 T2600G-18TSUN V1 Configuration Guide - Page 772

Configuring Network Security DHCP Snooping Configuration MAC Verify Rate Limit Decline Protect LAG 2) Click Apply. Enable or disable the MAC Verify feature. There are two fields in the DHCP packet that contain the MAC address of the host. The MAC Verify feature compares the two fields of a DHCP packet and discards the packet if the two fields are different. This prevents the IP address resource on the DHCP server from being exhausted by forged MAC addresses. Select to enable the rate limit feature and specify the maximum number of DHCP packets that can be forwarded on the port per second. The excessive DHCP packets will be discarded. Select to enable the decline protect feature and specify the maximum number of DHCP Decline packets that can be forwarded on the port per second. The excessive DHCP Decline packets will be discarded. Displays the LAG that the port is in. 4.1.3 (Optional) Configuring Option 82 Option 82 records the location of the DHCP client. The switch can add 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 a more flexible address distribution way. Choose the menu Network Security > DHCP Snooping > Option 82 Config to load the following page. Figure 4-3 Option 82 Config Follow these steps to configure Option 82: 1) Select one or more ports and configure the parameters. Option 82 Support Enable the Option 82 feature. Configuration Guide 742