@MrVegas76 I don't know. I suggest you contact Telekom and ask them. By the way, here is link to a thread about a similar issue. (same SFP modem with router of another brand)...

@MrVegas76 If I understand it correctly, this particular "Digitalisierungsbox Glasfaser Modem" you have is designed to be used with either a "Digitalisierungsbox Smart 2" or "Digitalisierungsbox...

By the way. What was still a "pre-release" yesterday has already become an official release today in parts of the world. https://www.tp-link.com/tw/support/download/archer-ax53/v1/#Firmware

@Joseph-TP Hi Joseph, Thanks. But please make sure this will be optimized on all router models that support IPv6 and Bandwidth Control, not just the model mentioned here in this thread.

@Dariuk Hi, Many ISP's require a so-called "VLAN ID" to be configured on the router and without it the Internet just won't work. Therefore, it would be helpful if you mentioned the name of the ISP...

@MrVegas76 Normally, in the log of a working PPPoE connection every "pppoe send" message would be followed by a "pppoe receive" message. In your log the Archer GE800 is repeatedly sending its initial...