Optional) Configuring Option 82 - TP-Link T1600G-18TS Configuration Manual

T1600g series

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Configuring Network Security

Decline Protect

2) Click Apply.

3.1.3 (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 3-3 Option 82 Config

Follow these steps to configure Option 82:

1) Select one or more ports and configure the parameters.

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.

Enable the Option 82 feature.

DHCP Snooping Configuration

Configuration Guide

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