Wireless/Redundant Edge Services xl Module Management and Configuration Guide WS.02.xx and greater

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IP Services—IP Settings, DHCP, and DNS
DHCP Server
DHCP Server
The Wireless Edge Services xl 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 xl 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 xl 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.