WESM zl Management and Configuration Guide WT.01.28 and greater

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IP Services—IP Settings, DHCP, and DNS

DHCP Server

The Wireless Edge Services zl Module can function as a DHCP server. Although the

module can provide DHCP services for your entire network, it is more appropriately

used as the DHCP server for your wireless network.

Overview

A DHCP server issues dynamic configurations to stations. The DHCP server on the

Wireless Edge Services zl Module can assign stations a variety of settings, or options,

in the configuration. Standard options include:

■ an IP address, which the module selects from a configured range of IP addresses

■ a default router address

■ a domain name

■ primary and secondary Domain Name System (DNS) addresses

■ a lease time (the time that the station can keep this configuration before

requesting it again)

Other options that you can specify for the configuration include:

■ broadcast addresses

■ NetBIOS node type

■ NetBIOS name server address

■ boot file

■ Bootstrap Protocol (BOOTP) server address

You can also define your own extended options.

The configuration for clients is stored in a DHCP pool, which you create and associate

with a particular VLAN on your Wireless Edge Services zl Module. When the module

receives a DHCP request from a station in that VLAN, it issues the configuration

stored in the pool to the station, including:

■ all configured options that the client requested

■ an IP address selected from the range for the pool

You can also create pools that assign fixed IP addresses to particular hosts.

A list of excluded IP addresses, which the module never assigns to DHCP clients,

prevents conflicts with static IP address assigned on your network.