User's Manual

Chapter 5 Wireless
B222s User’s Guide
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5.7.4 BSS
A Basic Service Set ( BSS) exist s when all com m unicat ions bet ween wireless stations or between a
wir eless stat ion and a wired network client go t hrough one access point ( AP) .
I nt ra- BSS t raffic is t raffic bet w een wireless stations in t he BSS. When I nt ra- BSS t raffic blocking is
disabled, wireless st at ion A and B can access the wired network and com municate wit h each other.
When I nt ra- BSS t raffic blocking is enabled, wir eless stat ion A and B can st ill access the wired
network but cannot com m unicate wit h each ot her.
Figure 30 Basic Service set
5.7.5 MBSSID
Traditionally, you need to use different APs to configure different Basic Service Sets ( BSSs) . As w ell
as t he cost of buying ext ra APs, there is also t he possibility of channel int erference. The LTE
Device’s MBSSI D ( Multiple Basic Service Set I Dent ifier) function allows you t o use one access point
to provide several BSSs sim ultaneously. You can t hen assign varying QoS priorities and/ or security
m odes t o different SSI Ds.
Wireless devices can use different BSSI Ds t o associate with t he sam e AP.
5.7.5.1 Notes on Multiple BSSs
• A m axim um of eight BSSs are allowed on one AP sim ultaneously.
• You m ust use different keys for different BSSs. I f t wo wireless devices have different BSSI Ds
( t hey are in different BSSs) , but have the sam e keys, they m ay hear each ot her ’s
com munications ( but not com m unicate with each ot her) .
• MBSSI D should not replace but rather be used in conj unct ion wit h 802.1x securit y.