I have a RB450G configured an running a PPPoE server on one port. I can connect to the internet with my laptop configured a PPPoE client without problems. I now want to connect another router to that port. I therfore configured the second router's WAN as PPPoE, putting in the same username and password that I had on my laptop. The routers's WAN does not connect. I found out that if I used a router with certain versions of DD-WRT on it and configuring the WAN as PPPoE and enabling RP(which I assume to be Reverse Polarity), the WAN connect. Do you know of any other router that has this RP feature to be able to use the WAN as PPPoE?
The TP Link now connects to the Mikrotik RB450G. I enabled logging for PPP on the RB450G and saw that the cause was "bad username or password". I guess those late night configurations was the cause. Once I corrected that issue, the routers connected. I will try other routers to see if I made similar mistakes, since I could not get them to connect. At lease I know that I can use the TP-Link brand for this purpose. Thaks for your input.