Configuring How To Assign Ip Addresses In A Global Address Pool - H3C S3600 Series Operation Manual

Operation Manual – DHCP
H3C S3600 Series Ethernet Switches-Release 1510
Table 2-3 Configure the global address pool mode on interface(s)
Enter system view
Configure
the specified
interface(s)
or all
interfaces to
operate
global
address pool
mode

2.2.4 Configuring How to Assign IP Addresses in a Global Address Pool

You can specify to bind an IP address in a global address pool statically to a DHCP
client or assign IP addresses in the pool dynamically to DHCP clients as needed. In a
global address pool, you can only bind one IP address statically to a DHCP client and
assign other IP addresses in the pool dynamically to DHCP clients.
For dynamic IP address assigning, you need to specify the range of the IP addresses to
be dynamically assigned. But for static IP address binding, you can regard that the IP
address statically bound to a DHCP client comes from a special DHCP address pool
that contains only one IP address.
I. Configuring to assign IP addresses by static binding
Some DHCP clients, such as WWW servers, need fixed IP addresses. This can be
achieved by binding IP addresses to the MAC addresses of these DHCP clients. When
such a DHCP client applies for an IP address, the DHCP server searches for the IP
address corresponding to the MAC address of the DHCP client and assigns the IP
address to the DHCP client.
When some DHCP clients send DHCP-DISCOVER packets to the DHCP server to
apply for IP addresses, they construct client IDs and add them in the
DHCP-DISCOVER packets. The DHCP server finds the corresponding IP addresses
based on the client IDs and assigns them to the DHCP clients.
Currently, only one IP address in a global DHCP address pool can be statically bound to
a MAC address or a client ID.
Operation
Configure the
current
interface
the
in
Configure
multiple
interfaces
simultaneously
in system view
Chapter 2 DHCP Server Configuration
Command
system-view
interface interface-type
i nterface-number
dhcp select global
quit
dhcp select global
{ interface interface-type
interface-number [
interface-type
interface-number ] | all }
2-6
Description
—
Optional
By default,
interface operates in
global address pool
mode.
to
the