TP-Link TL-SL5428E User Manual page 164

Note:
If you want to enable the DHCP Snooping feature for the member port of LAG, please ensure the
parameters of all the member ports are the same.
The following entries are displayed on this screen:
DHCP Snooping Config

DHCP Snooping:
Global Flow Control:
Decline Threshold:
Figure 11-8 DHCP Snooping
Enable/Disable the DHCP Snooping function globally.
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.
Select the value to specify the minimum transmission rate of the
Decline packets to trigger the Decline protection for the specific
port.
155