WESM zl Management and Configuration Guide WT.01.03 and greater

1-5
Introduction
ProCurve Wireless Edge Services zl Module
Among other functions, the Wireless Edge Services zl Module:
■ manages a set of wireless LANs (WLANs)—each of which is identified
by a service set identifier (SSID) and defines various network and
security policies
■ receives traffic from wireless stations via RPs and places this traffic into
the correct VLAN to be forwarded into the wired network
■ adopts connecting RPs and automatically deploys configurations to them
Depending on how you configure the Wireless Edge Services zl Module, it
may also:
■ enforce users’ 802.1X, MAC, or Web authentication (Web-Auth) to either:
• an external Remote Authentication Dial-In User Service (RADIUS)
server
• its internal RADIUS server
■ apply quality-of-service (QoS) settings to traffic received from and des-
tined to wireless stations
■ provide DHCP services
■ route among up to eight VLANs
■ implement a firewall between VLANs, applying both MAC and IP access
control lists (ACLs) and Network Address Translation (NAT)
■ enable seamless and fast Layer 2 roaming, as well as Layer 3 roaming,
between one of its own RPs and an RP adopted by itself or by another
module
■ monitor the wireless network for signs of an attack or intrusion
■ collect information about the wireless network and control self-healing
functions such as neighbor recovery and interference avoidance
■ sample wireless traffic and send the samples to an sFlow collector such
as ProCurve Manager Plus (PCM Plus)
This chapter provides a brief overview of these functions, as well as some of
the technologies on which they are based.
Wireless Networks and WLANs
In this guide, the term wireless network is used to encompass all the devices
(such as stations, RPs, access points [APs], Wireless Edge Services zl Modules,
and wireless services-enabled switches) involved in your organization’s wire-
less functions.
The term Wireless LAN System refers to a Wireless Edge Services zl Module
and all of its adopted RPs, which function together as a single entity.