RB2011 with 6 SXTG as AP with single user name

Hi Guys,

I have a RB2011 and connected via lan with 6 unit of SXTG.. I wanted to have the user to log in with any SXTG using a single user name & pw.
Could any of you guys guide me .
Thanks

You can use the Hotspot.

http://wiki.mikrotik.com/wiki/Manual:IP/Hotspot
https://www.youtube.com/watch?v=Mka4HpJQfZM