How to someone get the BSSID of a router without connecting to it

bssid, kismet-wireless, router, ssid, wifi
  1. How can someone get the BSSID of a router without connecting to it in order to differentiate between duplicate SSIDs?

  2. Does a router broadcast the BSSID?

Best Solution

Applying the command

netsh wlan show all 

in windows would show details of all the routers including the BSSID in your wireless range, even though you might not have been connected to the router.