Connect two wireless network with two different Gateways

Hi,
I have a big Problem:(
I have a network 192.168.40.0/24 with PPPOE authentication in City 1 and the second network is a 10.1.12.0./24 with PPPoe authentication in City 2.

Only in City 1 is a MT!!

Is it possible to login in City1 from City2 with PPPOE authentication.Ping works fine,but I can`t login per PPPOE.

THX

As far as I understand City1 and City2 are different routers, you want clients from City1.
If they are connected one to another, you can create bridge on the City1, then PPPoE clients will be able to authorize on City2 router, using the settings from City2 router.
Alternatively you can use centralized RADIUS server, if City1 and City2 are located in the different networks and you need to share the same PPP client database for auhtentication and accounting.

How can I create a bridge?How does it works?
THX

http://www.mikrotik.com/testdocs/ros/2.9/interface/bridge.php