TP-LINK TL-SG3424P ユーザーズマニュアル

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Enable the DHCP-snooping function globally: 
TP-LINK(config)# dhcp-snooping
 
dhcp-snooping global 
Description 
The dhcp-snooping global command is used to configure the DHCP snooping 
globally. To restore to the default value, please use no dhcp-snooping global 
command.  
Syntax 
dhcp-snooping global 
[global-rate global-rate] [dec-threshold dec-threshold
[dec-rate dec-rate
no 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 massages 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, 
Decline Flow Control as 20 pps for DHCP Snooping 
TP-LINK(config)# dhcp-snooping global 
global-rate  30 dec-threshold 20 
dec-rate 20