H3C Technologies H3C S7500E Series Switches - Manual (Page 50)

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To do… Use the command… Remarks
Enter system view system-view —
Enter common address pool view dhcp server ip-pool pool-name —
Specify an IP address range
network network-address
[ mask-length | mask mask ]
Required
Not specified by default.
Specify the address lease duration
expired { day day [ hour hour
[ minute minute ] ] | unlimited }
Optional
One day by default.
Return to system view quit —
Exclude IP addresses from
automatic allocation
dhcp server forbidden-ip
low-ip-address [ high-ip-address ]
Optional
Except IP addresses of the DHCP
server interfaces, all addresses in
the DHCP address pool are
assignable by default.
z In common address pool view, using the network command repeatedly overwrites the previous
configuration.
z After you exclude IP addresses from automatic allocation using the dhcp server forbidden-ip
command, neither a common address pool nor an extended address pool can assign these IP
addresses through dynamic address allocation.
z Using the dhcp server forbidden-ip command repeatedly can exclude multiple IP address
ranges from allocation.
Configuring Dynamic Address Allocation for an Extended Address Pool
Extended address pools support dynamic address allocation only.
When configuring address allocation for an extended address pool, you need to specify:
z Assignable IP address range
z Mask
After the assignable IP address range and the mask are specified, the address pool becomes valid.
Follow these steps to configure dynamic address allocation for an extended address pool:
To do… Use the command… Remarks
Enter system view system-view —
Enter extended address pool
view
dhcp server ip-pool pool-name
extended
—