4000 Router Series Layer 3 - IP Services Command Reference

secondary: Specifies the subnet as a secondary subnet. Without 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, where 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 use 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 any

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 remove the server's IP address from the DHCP address pool.

Syntax

next-server ip-address

undo next-server

Default

No server's IP address is specified in an address pool.

Views

DHCP address pool view

Predefined user roles

network-admin