H3C Technologies H3C S12500-X Series Switches - Manual (Page 44)

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Step Command Remarks
1. Enter system view. system-view N/A
2. Create a DHCP user class and
enter DHCP user class view.
dhcp class class-name
Required for client
classification.
By default, no DHCP user class
exists.
3. Configure the match rule for the
DHCP user class.
if-match option option-code [ hex
hex-string [ offset offset length length
| mask mask ] ]
Required for client
classification.
By default, no match rule is
specified for a DHCP user
class.
4. Return to system view. quit N/A
5. Enter address pool view. dhcp server ip-pool pool-name N/A
6. Specify the primary subnet for
the address pool.
network network-address
[ mask-length | mask mask ] By default, no primary subnet is
specified.
7. (Optional.) Specify the common
address range.
address range start-ip-address
end-ip-address By default, no IP address range
is specified.
8. (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.
9. (Optional.) Specify the address
lease duration.
expired { day day [ hour hour
[ minute minute [ second second ] ] ]
| unlimited }
The default setting is 1 day.
10. (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.
To exclude multiple address
ranges from dynamic
allocation, repeat this step.
11. Return to system view. quit N/A
12. (Optional.) Exclude the
specified IP addresses from
automatic allocation globally.
dhcp server forbidden-ip
start-ip-address [ end-ip-address ]
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
In scenarios where the DHCP server and the DHCP clients reside on the same subnet, the DHCP server
needs to assign addresses in different address ranges to the DHCP clients. To meet this need, you can
specify a primary subnet and multiple secondary subnets in an address pool. Upon receiving a client