IP Configuration : IPv4 Management and Interfaces : DHCP Snooping/Relay : Properties
 
Properties
To configure DHCP Relay, DHCP Snooping and Option 82:
STEP 1 Click IP Configuration > IPv4 Management and Interfaces >DHCP Snooping/Relay > Properties.
Enter the following fields:
Option 82—Select Option 82 to insert Option 82 information into packets.
DHCP Relay—Select to enable DHCP Relay.
DHCP Snooping Status—Select to enable DHCP Snooping.
Option 82 Pass Through—Select to leave foreign Option 82 information when forwarding packets.
Verify MAC Address—Select to verify that the source MAC address of the Layer 2 header matches the client hardware address as appears in the DHCP Header (part of the payload) on DHCP untrusted ports.
Backup Database—Select to back up the DHCP Snooping Binding database on the device’s flash memory.
STEP 2 Click Apply. The settings are written to the Running Configuration file.
STEP 3 To define a DHCP server, click Add.
STEP 4 Enter the IP address of the DHCP server and click Apply. The settings are written to the Running Configuration file.