PPPoE through flexible-ethernet-services

Hi all,

I need some guidance here. Here is my setup:

PPPoE Client Router  ---->  SW1  ----->  R1  ------>  R2-BRAS

I want to use the BRAS at R2 to terminate my PPPoE session from the PPPoE client router.

The client router connects to SW1 on access port vlan id 4004. Then the vlan is bridged as a bridged domain all the way to the BRAS. The thing is, i am not sure how to terminate this VLAN on the BRAS so it can enjoy PPPoE services and the link from R1 to R2-BRAS is not trunked but rather flexible-ethernet-services with vlan bridges.

R1 and R2-BRAS are MX series routers.

Let me know if i am not making any sense and i will elaborate some more.

Thanks