TP-Link TL-SG5426 User Guide - Page 475

4 DHCP Snooping Commands ip dhcp snooping verify mac-address This command verifies the client's hardware address stored in the DHCP packet against the source MAC address in the Ethernet header. Use the no form to disable this function. Syntax [no] ip dhcp snooping verify mac-address Default Setting Enabled Command Mode Global Configuration Command Usage If MAC address verification is enabled, and the source MAC address in the Ethernet header of the packet is not same as the client's hardware address in the DHCP packet, the packet is dropped. Example This example enables MAC address verification. Console(config)#ip dhcp snooping verify mac-address Console(config)# Related Commands ip dhcp snooping (4-231) ip dhcp snooping vlan (4-233) ip dhcp snooping trust (4-234) ip dhcp snooping information option This command enables the DHCP Option 82 information relay for the switch. Use the no form to disable this function. Syntax [no] ip dhcp snooping information option Default Setting Disabled Command Mode Global Configuration Command Usage • DHCP provides a relay mechanism for sending information about the switch and its DHCP clients to the DHCP server. Known as DHCP Option 82, it allows compatible DHCP servers to use the information when assigning IP addresses, or to set other services or policies for clients. • When the DHCP Snooping Information Option is enabled, clients can be 4-235