H3C S7500 Series Ethernet Switches Release 3135 DHCP Configuration Examples

DHCP Configuration Examples
H3C S7500 Series Ethernet Switches Release 3135 Chapter 2 Configuration Examples
2-7
# Enable the DHCP relay agent to support DHCP Option 82 and adopt the strategy of
keeping the original filed upon receiving DHCP messages carrying Option 82.
[SwitchA] dhcp relay information enable
[SwitchA] dhcp relay information strategy keep
# To ensure normal forwarding of DHCP packets across network segments, you need
configure a routing protocol and advertise the network segments of interfaces. The
following configuration uses RIP as an example. For the configuration of other routing
protocols, see the parts covering routing protocols in product manuals.
[SwitchA] rip
[SwitchA-rip] network 192.168.10.0
[SwitchA-rip] network 192.168.19.0
[SwitchA-rip] network 172.16.0.0
II. Configuring the Lab DHCP server
VLAN-int 17
172.16.2.4/30
VLAN-int 15
192.168.17.1
0010-5ce9-1dea
Lab1
Lab
DHCP Server
VLAN-int 25
192.168.19.1
Lab2
DHCP Relay
Figure 2-4 Network diagram for the Lab DHCP server configuration
# Configure an address pool for Lab2 and specify the address range, lease period, and
the gateway address.
<LAB> system-view
[LAB] dhcp enable
[LAB] dhcp server ip-pool lab2
[LAB-dhcp-lab2] network 192.168.19.0 255.255.255.0
[LAB-dhcp-lab2] expired day 2
[LAB-dhcp-lab2] gateway-list 192.168.19.1
# Configure the IP address of VLAN-interface17 as 172.16.2.6/30 and enable it to
operate in global address pool mode.
[LAB-dhcp-lab2] quit
[LAB] interface Vlan-interface 17