H3C S7500 Series Operation Manual page 656

Operation Manual – DHCP
H3C S7500 Series Ethernet Switches
II. Network diagram
DHCP Client DHCP Client DHCP Client
DHCP Client DHCP Client DHCP Client
Figure 4-3 DHCP-Snooping configuratio
III. Configuration procedure
Perform the following configuration on the DHCP-Snooping-enabled Switch A.
# Enter system view.
<H3C> system-view
# Enable the DHCP snooping function.
[H3C] dhcp-snooping
# Enable DHCP-Snooping option 82.
[H3C] dhcp-Snooping information enable
# Enter Ethernet 2/0/1 port view.
[H3C] interface ethernet2/0/1
# Specify the port as a trusted port.
[H3C-Ethernet2/0/1] dhcp-snooping trust
DHCP Client DHCP Client DHCP Client
Eth2/0/2 Eth2/0/2 Eth2/0/2
Switch A Switch A Switch A
(DHCP Snooping) (DHCP Snooping) (DHCP Snooping)
DHCP Client DHCP Client DHCP Client
4-6
Chapter 4 DHCP Snooping Configuration
DHCP Server DHCP Server
Internet Internet Internet
Eth2/0/1 Eth2/0/1 Eth2/0/1
Switch B Switch B Switch B
(DHCP relay agent) (DHCP relay agent) (DHCP relay agent)
n