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ZyAIR B-3000 User’s Guide

Chapter 6 Wireless LAN 68

6.5 Layer-2 Isolation Introduction

Layer-2 isolation is used to prevent wireless clients associated with your ZyAIR from

communicating with other wireless clients, AP’s, computers or routers in a network.

In the following figure, A represents your ZyAIR, B represents an AP, C represents a server

and 1, 2 and 3 represent wireless clients. If layer-2 isolation is enabled on the ZyAIR (A), then

wireless clients 1 and 2 cannot communicate with B, C or 3. Wireless clients 1 and 2 cannot

communicate with each other unless you enable Intra-BSS in the Wireless configuration

screen.

Note: In the Wireless configuration screen, the Enable Intra-BSS Traffic check box is

cleared when you enable layer-2 isolation.

If you want 1 and 2 to be able to communicate with C, B and/ or 3 then enter the MAC

addresses of C, B and/or 3 in the Allow devices with these MAC addresses table.

Figure 28 Layer-2 Isolation Application

MAC addresses that are not listed in the Allow devices with these MAC addresses table are

blocked from communicating with the ZyAIR’s wireless clients except for broadcast packets.

Layer-2 isolation does not check the traffic between wireless clients that are associated with

the same AP. Intra-BSS Traffic allows wireless clients associated with the same AP to

communicate with each other.

6.6 Layer-2 Isolation Configuration

If layer-2 isolation is enabled, you need to know the MAC address of the wireless client, AP,

computer or router that you want to allow to communicate with the ZyAIR's wireless clients.

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ZyXEL Communications ZyAIR Podręcznik Użytkownika Strona 69