H3C S7500E Series Ethernet Switches Operation Manual

Operation Manual – DHCP
H3C S7500E Series Ethernet Switches Chapter 2 DHCP Server Configuration
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 Note:
z Use the static-bind ip-address command together with static-bind mac-address
or static-bind client-identifier command to accomplish a static binding
configuration.
z In a DHCP address pool, if you execute the static-bind mac-address command
before the static-bind client-identifier command, the latter will overwrite the
former and vice versa.
z If you use the static-bind ip-address, static-bind mac-address, or static-bind
client-identifier command repeatedly in the DHCP address pool, the new
configuration will overwrite the previous one.
z The IP address of the static binding cannot be an interface address of the DHCP
server. Otherwise, an IP address conflict may occur and the bound client cannot
obtain an IP address correctly.
z The ID of the static binding must be identical to the ID displayed by using the
display dhcp client verbose command on the client. Otherwise, the client cannot
obtain an IP address.
II. Configuring dynamic address allocation
You need to specify one and only one address range using a mask for the dynamic
address allocation.
To avoid address conflicts, the DHCP server excludes IP addresses used by the GW,
FTP server and so forth from dynamic allocation.
You can specify the lease duration for a DHCP address pool different from others, and
a DHCP address pool can only have the same lease duration. A lease does not enjoy
the inheritance attribute.
Follow these steps to configure the dynamic address allocation:
To do… Use the command… Remarks
Enter system view
system-view
—
Enter DHCP 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,
meaning no assignable
address.
Specify the address
lease duration
expired { day day [ hour
hour [ minute minute ] ] |
unlimited }
Optional
One day by default.
Return to system view
quit
—