H3C S7500 Series Operation Manual page 624

Operation Manual – DHCP
H3C S7500 Series Ethernet Switches
Enter system view
Create a DHCP address
pool and enter DHCP
address pool view
Configure an IP address
to be statically bound
Configure a client MAC
address to which an IP
address is to be statically
bound
Note:
The static-bind ip-address command and the static-bind mac-address
command must be coupled.
In the same global DHCP address pool, if the static-bind ip-address command or
the static-bind mac-address command is executed repeatedly, the new
configuration overwrites the previous one.
The IP address to be statically bound cannot be an interface IP address of the
DHCP server; otherwise static binding does not take effect.
A client can permanently use the statically-bound IP address that it has obtained.
The IP address is not limited by the lease time of the IP addresses in the address
pool.
II. Configuring to assign IP addresses dynamically
IP addresses dynamically assigned to DHCP clients (including those that are
permanently leased and those that are temporarily leased) belong to addresses
segments that are previously specified. Currently, an address pool can contain only
one address segment, whose ranges are determined by the subnet mask.
To avoid IP address conflicts, the IP addresses to be dynamically assigned to DHCP
clients are those that are not occupied by specific network devices (such as gateways
and FTP servers).
The lease time can differ with address pools. But that of the IP addresses of the same
address pool are the same. Lease time is not inherited, that is to say, the lease time of
a child address pool is not affected by the configuration of the parent address pool.
Follow these steps to configure to assign IP addresses dynamically:
To do...
system-view
dhcp server ip-pool
pool-name
static-bind ip-address
ip-address [ mask mask ]
static-bind mac-address
mac-address
Chapter 2 DHCP Server Configuration
Use the command...
2-5
Remarks
—
Required
By default, no global
DHCP address pool is
created
Required
By default, no IP address
is statically bound
Required
By default, no MAC
address to which an IP
address is to be statically
bound is configured