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22.11 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 the DHCP SNOOPING binding function is enabled, the binding ARP
function can be set.
Example:
Enable the binding USER funciton on port ethernet1/1.
switch(config)#interface ethernet 1/1
switch(Config- Ethernet 1/1)#
ip dhcp snooping binding user-control
Relative Command: ip dhcp snooping binding enable
ip dhcp snooping binding dot1x
22.12 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 resources of the switch,
the actual number of trust users distributed depends on the resource amount. If a bigger
max number of users is set using this command, DHCP Snooping will distribute the
binding informaiton of untrust users to hardware to be trust users as long as there is
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