100
Step Command
Remarks
5.
(Optional.) Specify an IP
address range for a DHCP user
class.
class
class-name
range
start-ip-address end-ip-address
By default, no IP address
range is specified for a user
class.
The DHCP user class must
already exist.
To specify address ranges for
multiple DHCP user classes,
repeat this step.
6.
(Optional.) Set the address
lease duration.
expired
{
allow-hint
| {
day
day
[
hour
hour
[
minute
minute
[
second
second
] ] ] |
unlimited
}
[
allow-hint
] }
The default setting is 1 day.
7.
(Optional.) Exclude the
specified IP addresses in the
address pool from dynamic
allocation.
forbidden-ip ip-address
&<1-8>
By default, all the IP
addresses in the DHCP
address pool are assignable.
8.
Return to system view.
quit
N/A
9.
(Optional.) Exclude the
specified IP addresses from
automatic allocation globally.
dhcp server forbidden-ip
start-ip-address
[
end-ip-address
]
[
vpn-instance
vpn-instance-name
]
By default, except for the IP
address of the DHCP server
interface, all IP addresses in
address pools are assignable.
To exclude multiple IP
address ranges, repeat this
step.
Specifying a primary subnet and multiple secondary subnets for a DHCP address pool
If an address pool has a primary subnet and multiple secondary subnets, the server assigns IP
addresses on a secondary subnet when the primary subnet has no assignable IP addresses.
Follow these guidelines when you specify a primary subnet and secondary subnets for a DHCP
address pool:
•
You can specify only one primary subnet in each address pool. If you use the
network
command multiple times, the most recent configuration takes effect.
•
You can specify a maximum of 32 secondary subnets in each address pool.
•
IP addresses specified by the
forbidden-ip
command are not assignable in the current address
pool, but are assignable in other address pools. IP addresses specified by the
dhcp server
forbidden-ip
command are not assignable in any address pool.
To specify a primary subnet and secondary subnets for a DHCP address pool:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter DHCP address pool view.
dhcp server ip-pool pool-name
By default, no DHCP
address pool exists.
3.
Specify the primary subnet.
network
network-address
[
mask-length
|
mask
mask
]
By default, no primary subnet
is specified.
4.
(Optional.) Specify a secondary
subnet.
network
network-address
[
mask-length
|
mask
mask
]
secondary
By default, no secondary
subnet is specified.
5.
(Optional.) Return to address
pool view.
quit
N/A
