dhcp snooping binding record

DHCP snooping binding record refers to the information collected by a network switch when it performs DHCP snooping. DHCP snooping is a security feature that helps prevent rogue DHCP servers from distributing incorrect IP addresses, DNS servers, and default gateways to clients on a local area network (LAN).

When DHCP snooping is enabled on a switch, it listens to DHCP traffic on the LAN and records the MAC address, IP address, lease time, and other information associated with each DHCP client. This information is stored in a DHCP snooping binding table.

The DHCP snooping binding table is used by the switch to enforce DHCP policies, such as verifying that the IP address assigned to a client is valid and that the lease time has not expired. The binding table can also be used to track down unauthorized devices on the network, since rogue DHCP servers will not appear in the binding table.