ZyXEL Communications PLA-400 V2 - V3.0.5 Guía de usuario descargar pdf (Pagina 80)

ZyAIR Wireless Gateway Series User’s Guide

6-8 Wireless Configuration and Roaming

In a network environment with multiple access points, wireless stations are able to switch from one access

point to another as they move between the coverage areas. This is roaming. As the wireless station moves

from place to place, it is responsible for choosing the most appropriate access point depending on the signal

strength, network utilization or other factors.

The roaming feature on the access points allows the access points to relay information about the wireless

stations to each other. When a wireless station moves from a coverage area to another, it scans and uses the

channel of a new access point, which then informs the access points on the LAN about the change. The new

information is then propagated to the other access points on the LAN. An example is shown in Figure 6-6.

If the roaming feature is not enabled on the access points, information is not communicated between the

access points when a wireless station moves between coverage areas. The wireless station may not be able to

communicate with other wireless stations on the network and vice versa.

Figure 6-6 Roaming Example

The steps below describe the roaming process.

Step 1. As wireless station Y moves from the coverage area of access point AP 1 to that of access point

AP 2, it scans and uses the signal of access point AP 2.

Step 2. Access point AP 2 acknowledges the presence of wireless station Y and relays this information

to access point AP 1 through the wired LAN.

Step 3. Access point AP 1 updates the new position of wireless station.

Step 4. Wireless station Y sends a request to access point AP 2 for re-authentication.

1 2 ... 75 76 77 78 79 80 81 82 83 84 85 ... 395 396

Sin comentarios

ZyXEL Communications PLA-400 V2 - V3.0.5 Guía de usuario Pagina 80