PPPOE over Vigor 165 dies regularly, how to debug?

[skywalker007]

Hi *.*,

I need some advise how to debug a braking pppoe internet connection (Telekom BNG VDSL2).
Setup is as follows:
Vigor 165 as modem with pppoe passthrough.
OPNSense tags interface em1 with VLAN7.
PPPOE sit on top of em1_VLAN7.

I had the same setup running for a while with a Vigor 130 without problems.
Now with a Vigor 165, the connection breaks sometimes ones a day and sometimes after a few days.
I don't see any indicator for that. The pppoe log indicates connection attempts without success.
The Vigor modem indicates that DSL connection is up.
I don't see anything on the vigor that let's me troubleshoot any layer on top of that.
Does anyone have a similar setup? Any hints what to look for?

The procedure to get it back up and running currently is to restart both, the modem and the firewall.
thanks a lot for any hint, Till

[chemlud]

I would try at first (if both 130 and 165 are on latest firmware) with setting VLAN7 in the Vigor and see how that does.

[skywalker007]

thanks for your input.
Why do you expect that to work better? I have always been tagging on the firewall because I use the underlying interface for routing web UI access to the modem's IP.