Advanced
224
8.2
DHCP Server
RM Web
Release
6.0
07/2010
8.2.2 Pool
This dialog allows you to closely control the allocation of IP addresses. For
this purpose, the DHCP server provides what is known as an IP address pool
(in short “pool”) from which it allocates IP addresses to clients. The pool
consists of a list of entries. An entry can define a specific IP address or a
connected IP address range.
You can choose between dynamic and static allocation.
X An entry for dynamic allocation applies to all the ports of the device for
which you activate the DHCP server. If a client makes contact at a port,
the DHCP server allocates a free IP address from a pool entry for this port.
For dynamic allocation, create a pool entry for all ports and enter the first
and last IP addresses for the IP address range. Leave the MAC Address,
Client ID, Remote ID and Circuit ID fields empty.
You have the option to create multiple pool entries. You can thus create
IP address ranges that contain gaps.
X With static allocation, the DHCP server always allocates the same IP
address to a client. The DHCP server identifies the client using a unique
hardware ID.
A static address entry can only contain 1 IP address, and it can apply for
all ports or for a specific port of the device.
For static allocation, create a pool entry for all ports or one specific port,
enter the IP address, and leave the “Last IP Address” field empty. Enter a
hardware ID with which the DHCP server uniquely identifies the client.
This ID can be a MAC address, a client ID, a remote ID or a circuit ID. If
a client makes contact with a known hardware ID, the DHCP server
allocates the static IP address.
The table shows you the configured entries of the DHCP server pool. You
have the option to create a new entry, edit an existing entry or delete entries.
You have the option to create up to 128 pool entries.
Click “Create entry” to create a new entry. The device displays a new dialog.
Fill in the fields you require, then click “Write”. Click on “Back” to return to the
“DHCP Server Pool” dialog.
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