Chapter 7 Wireless
VMG1312-B Series User’s Guide
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coincident al em itt ers such as electric m otors or m icrowaves. Problem s wit h absorpt ion occur when
physical object s ( such as t hick walls) are betw een t he t w o radios, m uffling t he signal.
7.10.5 BSS
A Basic Service Set (BSS) exist s when all com m unicat ions bet ween wireless st at ions or bet ween a
wireless station and a wired network client go through one access point ( AP) .
I ntra-BSS traffic is traffic bet ween wireless stations in t he BSS. When I ntra-BSS t raffic blocking is
disabled, wireless station A and B can access the wired network and com m unicate w ith each ot her.
When I ntra-BSS t raffic blocking is enabled, wireless st at ion A and B can st ill access the wired
net work but cannot com m unicate wit h each ot her.
Figure 44 Basic Service set
7.10.6 MBSSID
Traditionally, you need to use different APs t o configure different Basic Ser vice Sets ( BSSs) . As well
as the cost of buying ext ra APs, there is also the possibilit y of channel int erference. The Device’s
MBSSI D (Mult iple Basic Service Set I Dent ifier) function allows you to use one access point t o
provide several BSSs sim ultaneously. You can t hen assign varying QoS prior ities and/ or security
m odes t o different SSI Ds.
Wireless devices can use different BSSI Ds t o associate with the sam e AP.
7.10.6.1 Notes on Multiple BSSs
• A m axim um of eight BSSs are allowed on one AP sim ult aneously.
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