H3C Technologies H3C S5120 Series Switches - Manual (Page 730)

1-5
For detailed configuration of a DHCP server, refer to DHCP Configuration in the IP Service Volume.
Figure 1-2 Network diagram for configuring dynamic binding function
Configuration procedure
1) Configure Switch A
# Configure dynamic binding function on port GigabitEthernet 1/0/1 to filter packets based on both the
source IP address and MAC address.
system-view
[SwitchA] interface gigabitethernet1/0/1
[SwitchA-GigabitEthernet1/0/1] ip check source ip-address mac-address
[SwitchA-GigabitEthernet1/0/1] quit
# Enable DHCP snooping.
[SwitchA] dhcp-snooping
# Configure the port connecting to the DHCP server as a trusted port.
[SwitchA] interface gigabitethernet 1/0/2
[SwitchA-GigabitEthernet1/0/2] dhcp-snooping trust
[SwitchA-GigabitEthernet1/0/2] quit
2) Verify the configuration
# Display that the dynamic binding function is configured successfully on port GigabitEthernet 1/0/1.
[SwitchA] interface gigabitethernet 1/0/1
[SwitchA-GigabitEthernet1/0/1] display this
#
interface GigabitEthernet1/0/1
port link-mode bridge
ip check source ip-address mac-address
#
return
# Display the dynamic binding entries that port GigabitEthernet 1/0/1 has obtained from DHCP
snooping.
[SwitchA-GigabitEthernet1/0/1] display ip check source
Total entries found: 1
MAC IP Vlan Port Status
0001-0203-0406 192.168.0.1 1 GigabitEthernet 1/0/1 DHCP-SNP
# Display the dynamic entries of DHCP snooping and check it is identical with the dynamic entries that
port GigabitEthernet 1/0/1 has obtained.