@MatthiasL22 And I assume this issue still has not been fixed or resolved or even reported as a known issue in the release notes.

What help the TP-Link rep didn't provide any help at all.... I mean the very very very least the rep could have done was post a direct link to the article he/she is referring to but no they couldn't...

@Clive_A I have read those resources and they don't explain WHY TP-Link decided to basically implemement the OpenVPN protocol TWICE on these varius ER series routers. Can you as the Support person...

@Virgo Virgo wrote @svandive Hi, I have confirmed with tplink support team, ER8411 only supports 1G and 10G, it can not show 2.5G, check the spec: Interesting if you login to the ER8411 via SSH/ROOT...

@Virgo wow that article was deleted...

Hank21 wrote Hi @autumnwalker The SFP+ port on the ER8411 is 10G static. You have fiber connection from the ISP modem? If it is just an 2.5G Ethernet connection from your ISP modem, you can choose...