TP-Link T2500-28TCTL-SL5428E T2500-28TCUN V1 CLI Reference Guide - Page 91

T2500-28TC JetStream L2 Managed Switch CLI Guide Syntax ip dhcp snooping global { [global-rate global-rate] [dec-threshold dec-threshold] [dec-rate dec-rate] } no ip dhcp snooping global Parameter global-rate -- The value to specify the maximum amount of DHCP messages that can be forwarded by the switch per second. The excessive messages will be discarded. The options are 0/10/20/30/40/50 (packet/second).By default, it is 0 standing for "disable". dec-threshold --The value to specify the minimum transmission rate of the Decline packets to trigger the Decline protection for the specific port. The options are 0/5/10/15/20/25/30 (packet/second).By default, it is 0 standing for "disable". dec-rate --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. The options are 5/10/15/20/25/30 (packet/second). By default, it is 5. Command Mode Global Configuration Mode Example Configure the Global Flow Control as 30pps, the Decline Threshold as 20 pps, and decline Flow Control as 20 pps for DHCP Snooping: T2500-28TC(config)#ip dhcp snooping global global-rate 30 dec-threshold 20 dec-rate 20 ip dhcp snooping information option Description The ip dhcp snooping information option command is used to enable the Option 82 function of DHCP Snooping. To disable the Option 82 function, please use no ip dhcp snooping information option command. Syntax ip dhcp snooping information option 74