WESM zl Management and Configuration Guide WT.01.28 and greater

6-24
IP Services—IP Settings, DHCP, and DNS
DHCP Server
A host pool contains a single fixed IP address and is designated to a specific device.
When that device sends a DHCP request, the Wireless Edge Services zl Module
recognizes its MAC address (or client identifier) and assigns the device the fixed IP
address.
Use host pools for devices that require a dynamic address but also a stable address
that never changes. For example, certain devices should almost always be given static
addresses so that routes remain accurate, the network design remains logical and
consistent, and the traffic flow remains uninterrupted. Network servers, such as
Remote Access Dial In User Service (RADIUS) servers, need stable addresses so
that other network devices, which are configured to query those servers, always know
where to reach them.
However, sometimes a device that needs a stable IP address is also required to take
a dynamic address from a DHCP server. You can configure the router to assign a
fixed DHCP address to this device.
Also, when you want to assign a permanent address to a particular host, sometimes
it is better to configure this address through a DHCP server, rather than through
whatever application is on the host. DHCP automatically tracks addresses so that two
devices are not inadvertently given the same address.
Creating a Network Pool. To create a network pool of IP addresses, complete these
steps:
1. Select Network Setup > DHCP Server > Configuration.