TP-Link T2500G-10TS - 12.4 802.1 X

194
The following entries are displayed on this screen:

DHCP Snooping Config
DHCP Snooping:
Enable/Disable the DHCP Snooping function globally.
Global Flow Control:
Select the value to specify the maximum amount of DHCP
messages that
can be forwarded by the switch per second.
The excessive massages will be discarded.
Decline Threshold:
Select the value to specify the minimum transmission rate of
the Decline packets to trigger the Decline protection for the
specific port.
Decline F
low Control:
Select the value to specify the Decline Flow Control. The
traffic flow of the corresponding port will be limited to be this
value if the transmission rate of the Decline packets exceeds
the Decline Threshold.

Option 82 Config
Option 82 Support:
Enable/Disable the Option 82 feature.
Existed Option 82 field:
Select the operation for the existed Option 82 field of 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 t
he packets including the
Option 82 field.
Circuit ID:
Enter the sub-option Circuit ID for the customized Option 82.
Remote ID:
Enter the sub-
option Remote ID for the customized Option
82.

Port Config
Port Select:
Click the Select button to quick-selec
t the corresponding
port based on the port number you entered.
Select:
Select your desired port for configuration. It is multi-optional.
Port:
Displays the port number.
Trusted Port:
Enable/Disable the port to be a Trusted Port. Only the
Trusted Port ca
n receive the DHCP packets from DHCP
servers.