Extender.linksys.com Setup
                     Extender.linksys.com Setup
Linksys Extender Setup is carried out via the 
extender.linksys.com setup web-based setup 
page.
Linksys Extender Setup Page
To access the smart WiFi setup page if you have a 
Linksys RE6400 setup, RE6300 setup, or RE6700, 
simply enter RE6XOO-XXX in the address bar for 
Windows or RE6XOO-XXX.local for Mac users. Finally, 
the three Xs represent the last three characters of your 
router's MAC address. If you don't know how to find the 
MAC address, go to the extender settings page, select 
status, and then click on WLAN Statistics. Your 
extender's MAC address can be found here.