H3C Technologies H3C WX3000E Series Wireless Switches - Manual (Page 237)

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a. In the Server Group field, click Add.
b. Enter 1 for Server Group ID, and 10.1.1.1 for IP Address.
c. Click Apply.
Figure 188 Adding a DHCP server group
3. Enable the DHCP relay agent on VLAN-interface 1:
a. Click the icon of VLAN-interface 1 in the Interface Config field.
b. Select the Enable option for DHCP Relay, and select 1 for Server Group ID.
c. Click Apply.
Figure 189 Enabling the DHCP relay agent on an interface and correlate it with a server group
DHCP snooping configuration example
Network requirements
As shown in Figure 190 , a DHCP snooping device (the AC) is connected to a DHCP server through
GigabitEthernet 1/0/2, and to an AP through GigabitEthernet 1/0/1.
• Enable DHCP snooping on the AC and configure DHCP snooping to support Option 82. Configure
the handling strategy for DHCP requests containing Option 82 as replace.
• Enable GigabitEthernet 1/0/2 to forward DHCP server responses. Disable GigabitEthernet 1/0/1
from forwarding DHCP server responses.
• Configure the AC to record clients' IP-to-MAC address bindings in DHCP-REQUEST messages and
DHCP-ACK messages received from a trusted port.