WESM zl Management and Configuration Guide WT.01.28 and greater

9-8
Fast Layer 2 Roaming and Layer 3 Mobility
Overview
Figure 9-2. Layer 2 and Layer 3 Roaming Domains
Roaming Behavior
This section summarizes which features you must configure on your Wireless Edge
Services zl Modules to enable the best possible roaming behavior in various circum-
stances. Keep in mind that this section discusses the behavior the modules support.
Stations’ capabilities also affect roaming. For example, the station’s wireless network
interface card (NIC) determines when the station will actually roam, and the station’s
operating system (OS) determines how long the station holds the IP stack if it loses
the radio signal—even temporarily.