ZyAIR Access Point Series User’s Guide
Chapter 7
Multiple ESS and VLANThis chapter is only applicable to the ZyAIR
7.1Wireless LAN Infrastructures
See the Wizard Setup and Wireless Configuration chapters for some basic WLAN scenarios and terminology.
7.1.1 Multiple ESS
Traditionally, you needed different APs to configure different ESSs. As well as the cost of buying extra APs, there was also the possibility of channel interference. The ZyAIR’s Multiple ESS
Wireless stations can use different ESSIDs to associate with the same AP. Only wireless stations with the same ESSID can communicate with each other. This allows the AP to logically group wireless stations in a manner similar to VLAN (Virtual LAN).
7.1.2 Notes on Multiple-ESS
1.A maximum of eight ESSs are allowed on one AP.
2.Each ESS has its own MAC filter set; see the MAC filter set section for more information.
3.When you enable
4.You must use different WEP keys for different ESSs. If two stations have different ESSIDs (they are in different ESSs), but have the same WEP keys, they may hear each other’s communications (but not communicate with each other).
5.When you enable
6.
7.1.3 Multiple ESS Example
In this example, wireless stations 1 and 2 both associate with the ZyAIR but cannot communicate with each other as they belong to different ESSs. Stations 1, 3 and 4 can communicate with each other. Similarly, stations 2, 5 and 6 can communicate with each other.
Multiple ESS and VLAN |