WESM zl Management and Configuration Guide WT.01.28 and greater

6-3

IP Services—IP Settings, DHCP, and DNS

IP Settings

To function as a Layer 3 device, the Wireless Edge Services zl Module requires only

one IP address, usually assigned to the default management interface. (The default

management interface is virtual LAN [VLAN] 1.) For some network environments,

however, you may want to assign IP addresses to other VLANs. To do so, you must

create VLAN interfaces.

Reasons to assign a VLAN an IP address include:

■ You want the Wireless Edge Services zl Module to act as the Dynamic Host

Configuration Protocol (DHCP) server for stations in that VLAN.

■ You want the Wireless Edge Services zl Module to use Network Address

Translation (NAT) to translate IP addresses on another VLAN to an address on

this VLAN.

■ The Wireless Edge Services zl Module assigns stations in a Web authentication

(Web-Auth) WLAN to this VLAN.

When you configure a WLAN to use Web-Auth, the module must have an IP

address on the static VLAN. (For more information about configuring Web-Auth

for a WLAN, see Chapter 5: “Web Authentication for Mobile Users.”)

■ You want to enable routing between VLANs.

You can assign an IP address to a maximum of eight VLANs on the Wireless Edge

Services zl Module.