H3C S6812 Series Command Reference Manual page 723

Parameters
network-address: Specifies the subnet for dynamic allocation. If no mask length or mask is specified,
the natural mask will be used.
mask-length: Specifies the mask length in the range of 1 to 30.
mask mask: Specifies the mask in dotted decimal format.
secondary: Specifies the subnet as a secondary subnet. If you do not specify this keyword, this
command specifies the primary subnet. If the addresses in the primary subnet are used up, the
DHCP server can select addresses from a secondary subnet for clients.
Usage guidelines
You can use the secondary keyword to specify a secondary subnet and enter its view. In secondary
subnet view, you can specify gateways by using the gateway-list command for DHCP clients in the
secondary subnet.
You can specify only one primary subnet for a DHCP address pool. If you execute the network
command multiple times, the most recent configuration takes effect.
You can specify up to 32 secondary subnets for a DHCP address pool.
The primary subnet and secondary subnets in a DHCP address pool must not have the same
network address and mask.
If you have used the address range or class command in an address pool, you cannot specify a
secondary subnet in the same address pool.
Modifying or removing the network configuration deletes the assigned addresses from the current
address pool.
Examples
# Specify primary subnet 192.168.8.0/24 and secondary subnet 192.168.10.0/24 in DHCP address
pool 0.
<Sysname> system-view
[Sysname] dhcp server ip-pool 0
[Sysname-dhcp-pool-0] network 192.168.8.0 mask 255.255.255.0
[Sysname-dhcp-pool-0] network 192.168.10.0 mask 255.255.255.0 secondary
[Sysname-dhcp-pool-0-secondary]
Related commands
display dhcp server pool
gateway-list
next-server
Use next-server to specify the IP address of a server in a DHCP address pool.
Use undo next-server to restore the default.
Syntax
next-server ip-address
undo next-server
Default
No server's IP address is specified in a DHCP address pool.
Views
DHCP address pool view
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