How to configure and use the binding table

The user-bind command is used to create a static DHCP binding table. The dynamic DHCP binding table is automatically generated after DHCP snooping is enabled.
In V100R005 and later versions, the ip source check user-bind enable command is used to filter packets.
You can use the following combination of ip-address, mac-address, interface, and vlan to configure the static binding table:

In the interface view:
--Interface and IP address
--Interface and MAC address
--Interface, IP address, and MAC address
--Interface, IP address, and VLAN ID
--Interface, MAC address, and VLAN ID
--Interface, IP address, MAC address, and VLAN ID
In the VLAN view:
--VLAN ID and IP address
--VLAN ID and MAC address
--VLAN ID, IP address, and MAC address
--VLAN ID, IP address, and interface
--VLAN ID, MAC address, and interface
--VLAN ID, IP address, MAC address, and interface
For example, VLAN ID and IP address indicates that the packets whose IP address and VLAN matching the binding entry are allowed to pass through, regardless of the interface receiving the packets and the MAC address of the packets.

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