1- Extended Service Set ID means that you have more than one access point and they all areالموضوع الأصلى من هنا: منتديات سيسكو التعليمية | كن بين الخبراء ! http://www.ciscovb.com/vb/t4535.html#post26281
set to the same SSID and all are connected together in the same VLAN or distribution system
so users can roam.
2- It must have different channel in order to avoid overlapping channels