TP-Link T1500 Series User Manual page 429

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Table of Contents

Configuring DHCP Service

3.1.1 Configuring Option 82 for Ports

Choose the menu L3 FEATURES > DHCP Service > DHCP L2 Relay > Port Config to load

the following page.

Figure 3-1 Configure Option 82 for Ports

Follow these steps to enable DHCP Relay and configure Option 82:

1) Select one or more ports to configure Option 82.

Option 82 Policy

Select whether to enable Option 82 or not. By default, it is disabled. Option 82 is

used to record the DHCP client's location, Ethernet port and the VLAN, etc. If you

need to record the accurate location of a client, you can enable Option 82 on the

relay device which is closest to the client.

Select the operation for the Option 82 field of the DHCP request packets.

Keep: Indicates keeping the Option 82 field of the packets.

Replace: Indicates replacing the Option 82 field of the packets with the switch

defined one. By default, the Circuit ID is defined to be the VLAN and the ID of the

port which receives the DHCP Request packets. The Remote ID is defined to be

the MAC address of the DHCP Relay device which receives the DHCP Request

Drop: Indicates discarding the packets that include the Option 82 field.

Select the format of option 82 sub-option value field.

Normal: Indicates that the format of sub-option value field is TLV (type-length-

Private: Indicates that the format of sub-option value field is just value.

DHCP L2 Relay Configuration

Configuration Guide