ZyXEL Communications Marine Radio NWA-3550 User Manual

Chapter 12 Layer-2 Isolation Screen

NWA-3500/NWA-3550 User’s Guide

MAC addresses that are not listed in the Allow devices with these MAC 
addresses table of the Wireless > Layer-2 Isolation screen are blocked from 
communicating with the NWA’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.

Use the Wireless > Layer-2 Isolation screen (see 

) to 

configure the MAC addresses of the wireless client, AP, computer or router that 
you want to allow the associated wireless clients to have access to. 

Every Ethernet device has a unique MAC (Media Access Control) address. The MAC 
address is assigned at the factory and consists of six pairs of hexadecimal 
characters, for example, 00:A0:C5:00:00:02. You need to know the MAC address 
of each device to configure MAC filtering on the NWA.

If layer-2 isolation is enabled, you need to know the MAC address of each wireless 
client, AP, computer or router that you want to allow to communicate with the 
ZyXEL Device's wireless clients.