Migrating from pppoe server mikrotik to pppoe server juniper

Dear, I'm starting setting up a pppoe server juniper in place of a mikrotik. Today I have a freeradius server / mikrotik with fully operational postgresql database and would like to set up another for the same purpose with the Juniper MX80 Would you like to receive information and Juniper configuration examples using Freeradius to authenticate my pppoe clients. The principle just need to validate user and password as well as a limiter band. All help is welcome!