Qtech QSW-8200-28T-AC — dHCP Snooping Commands: User Binding and Configuration Guide [64/79]

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User Manual

Chapter 5. Commands for DHCP Snooping 64

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a bingding ARP list entry. The static binding uses will never be aged, and have a priority

higher than dynamic binding users. Only after the DHCP SNOOPING binding function is

enabled, the static binding users can be enabled.

 Example: Configure static binding users.

 switch(config)#ip dhcp snooping binding user 00-03-0f-12-34-56 address 192.168.1.16

interface Ethernet 1/0/16

 Relative Command: ip dhcp snooping binding enable

5.14 ip dhcp snooping binding user-control

 Command: ip dhcp snooping binding user-control

 no ip dhcp snooping binding user-control

 Function: Enable the binding user funtion.

 Parameters: None.

 Command Mode: Port Mode.

 Default Settings: By default, the binding user funciton is disabled on all ports.

 Usage Guide: When this function is enabled, DHCP SNOOPING will treat the captured

binding information as trusted users allowed to access all resources. This command is

mutually exclusive to “ip dhcp snooping binding dot1x“ command.

 Only after DHCP SNOOPING binding function is enabled, the binding user function can

be set. This command is not limited by “ip dhcp snooping“ based on VLAN, but it is only

limited by the global “ip dhcp snooping enable“ command.

 Example: Enable the binding USER funciton on port ethernet1/0/1.

 switch(config)#interface ethernet 1/0/1

 switch(Config-Ethernet 1/0/1)# ip dhcp snooping binding user-control

 Relative Command: ip dhcp snooping binding enable

 ip dhcp snooping binding dot1x

5.15 ip dhcp snooping binding user-control max-user

 Command: ip dhcp snooping binding user-control max-user <number>

 no ip dhcp snooping binding user-control max-user

 Function: Set the max number of users allowed to access the port when enabling DHCP

Snooping binding user funciton; the no operation of this command will restore default

value.

 Parameters: <number> the max number of users allowed to access the port, from 0 to

1024.

 Command Mode: Port Configuration Mode.

 Default Settings: The max number of users allowed by each port to access is 1024.

 Usage Guide: This command defines the max number of trust users distributed

according to binding information, with ip dhcp snooping binding user-contrl enabled

on the port. By default, the number is 1024. Considering the limited hardware