Cabletron Systems RoamAbout Guide de l'utilisateur télécharger pdf (Page 21)

Introducing RoamAbout Access Point 1-9

Roaming

The Access Point enables wireless clients to move from the coverage area of one AP

into the coverage area of another AP while maintaining LAN connectivity. This

capability is called roaming. Figure 1-2 illustrates a wireless client roaming from one

AP coverage area to another.

Figure 1-2: Roaming

In Figure 1-2, Cell 1 and Cell 2 share overlapping areas of coverage. As a wireless

client moves from Cell 2 to Cell 1, the necessary infrastructure network information is

passed from Access Point 2 (AP2) to AP1.

When a wireless client (such as the laptop computer in Figure 1-2) approaches the

boundary of a coverage area, it enters a promiscuous mode. In this mode, the wireless

client searches for a new AP that provides a better quality signal, resulting in more

reliable data throughput.

Refer to Chapter 4 for information about setting roaming parameters.

LKG-8892-931-01

Cell 1 Cell 2

(Ap1)

(Ap2)

(Ap1)

Wireless

Client

(Ap2)

(Ap1)

AP2

AP1

Coverage

Areas

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Cabletron Systems RoamAbout Guide de l'utilisateur Page 21