H3C Technologies H3C SecPath F1000-E - Manual (Page 57)

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# Enable DHCP.
system-view
[DeviceA] dhcp enable
# Exclude IP addresses from dynamic allocation (addresses of the DNS server, WINS server, and
gateways).
[DeviceA] dhcp server forbidden-ip 10.1.1.2
[DeviceA] dhcp server forbidden-ip 10.1.1.4
[DeviceA] dhcp server forbidden-ip 10.1.1.126
[DeviceA] dhcp server forbidden-ip 10.1.1.254
# Configure DHCP address pool 0 (address range, client domain name suffix and DNS server address).
[DeviceA] dhcp server ip-pool 0
[DeviceA-dhcp-pool-0] network 10.1.1.0 mask 255.255.255.0
[DeviceA-dhcp-pool-0] domain-name aabbcc.com
[DeviceA-dhcp-pool-0] dns-list 10.1.1.2
[DeviceA-dhcp-pool-0] quit
# Configure DHCP address pool 1 (address range, gateway, WINS server, and lease duration).
[DeviceA] dhcp server ip-pool 1
[DeviceA-dhcp-pool-1] network 10.1.1.0 mask 255.255.255.128
[DeviceA-dhcp-pool-1] gateway-list 10.1.1.126
[DeviceA-dhcp-pool-1] expired day 10 hour 12
[DeviceA-dhcp-pool-1] nbns-list 10.1.1.4
[DeviceA-dhcp-pool-1] quit
# Configure DHCP address pool 2 (address range, gateway and lease duration).
[DeviceA] dhcp server ip-pool 2
[DeviceA-dhcp-pool-2] network 10.1.1.128 mask 255.255.255.128
[DeviceA-dhcp-pool-2] expired day 5
[DeviceA-dhcp-pool-2] gateway-list 10.1.1.254
3. Verification
After the preceding configuration is complete, clients on networks 10.1.1.0/25 and 10.1.1.128/25 can
obtain IP addresses on the corresponding network and other network parameters from Device A. You
can use the display dhcp server ip-in-use command on the DHCP server to view the IP addresses
assigned to the clients.
Self-Defined Option Configuration Example
Network requirements
As shown in Figure 13 , the DHCP client (Device B) obtains its IP address and PXE server addresses from
the DHCP server (Device A). The IP address belongs to subnet 10.1.1.0/24. The PXE server addresses are
1.2.3.4 and 2.2.2.2.
The DHCP server assigns PXE server addresses to DHCP clients through Option 43, a self-defined option.
The format of Option 43 and that of the PXE server address sub-option are shown in Figure 5 and Figure
7 , respectively. The value of Option 43 configured on the DHCP server in this example is 80 0B 00 00
02 01 02 03 04 02 02 02 02. The number 80 is the value of the sub-option type. The number 0B is the
value of the sub-option length. The numbers 00 00 are the value of the PXE server type. The number 02
indicates the number of servers. The numbers 01 02 03 04 02 02 02 02 indicate that the PXE server
addresses are 1.2.3.4 and 2.2.2.2.