WESM zl Management and Configuration Guide WT.01.XX and greater

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Introduction
ProCurve Wireless Edge Services zl Module
On the other hand, you might want the Wireless Edge Services zl Module itself
to router, filter, and otherwise control traffic. In this case, follow this design:
■ Have the Wireless Edge Services zl Module map a WLAN to a VLAN
reserved for wireless stations. (Or set up dynamic VLAN assignments for
wireless users.)
■ Terminate that VLAN on the module. In other words, do not tag the
module’s uplink port for the VLAN.
■ Enable routing on the module.
This design requires the Wireless Edge Services zl Module to take over many
of the functions otherwise performed by network servers and infrastructure
devices. For example, the module can act as the DHCP server for wireless
stations, and it can perform dynamic NAT, masquerading as the source for all
wireless traffic.
Figure 1-8 shows a wireless network that separates VLANs used on the
wireless network from VLANs used on the wired network. In this network, the
Wireless Edge Services zl Module routes traffic from the wireless network.