TP-Link T2600G-28TS - Option 82 Config

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LAG:
Displays the LAG to which the port belongs.
13.3.3 Option 82 Config
The switch can propagate the control information and the network parameters via the Option 82
field to provide more information for the Host. When the DHCP option 82 feature is enabled on the
switch, a host is identified by the switch port through which it connects to the network (in addition
to its MAC address). The DHCP option 82 feature is supported only when DHCP snooping is
globally enabled.
Choose the menu Network Security→DHCP Snooping→Option 82 Config to load the following
page.
Figure 13-13 Option 82 Config

Option 82 Configuration
UNIT:1/LAGS:
Click 1 to configure the physical ports. Click LAGS
to
configure the link aggregation groups.
Select:
Select your desired port for configuration. It is multi-optional.
Port:
Displays the port number.
Option 82 Support:
Enable/Disable the Option 82 feature.
Operation Strategy
: Select the operation for the existed Option 82 field o
f the
DHCP request packets from the Host. The option 82 field in
DHCP reply packets will be remove when the option 82
feature is enable，
no matter which operation is configured for
the existed option 82 filed.
•
Keep: Indicates to keep the Option 82 field of the packets.
•
Replace:
Indicates to replace the Option 82 field of the
packets with the switch defined one.
•
Drop:
Indicates to discard the packets including the Option
82 field.
Circuit ID
Customization
:
Enable or disable the switch to define the Option
82
sub-option Circuit ID field. With Disable selected
, configure
VLAN ID and port number from which the packet is
received
as the circuit ID default value.