redirect pppoe

hi, help me please…
I have one composed net and work regurarly:

Isp—cable–>MT1----W 2,4—>client (authenticated whit pppoe)

and I would want to make this:

Isp—cable–>MT1----W 2,4G—>client (authenticated whit pppoe)
|
|___W 5G---->MT2—W 2,4—> client (authenticated whit pppoe but on MT1)

how I must setting the MT2 in order to make this?

sorry for my english

Thanks

Isp
|
cable
|
|
MT1----W 2,4G—>client (authenticated whit pppoe)
|
|___W 5G---->MT2—W 2,4—> client (authenticated whit pppoe but on MT1)

this diagram is correct

I believe ytou have to set up radious server ant then let both MT’s authenticate using it.

try to set mt2 as bridge and make sure there is not routing/nat on wireless equipment
you can also try to make EoIP from MT2 to MT1, and do bridge for that EoIP with appropriate ethernet