pppd Timeout waiting for PADO packets

[NetGain]

Hi all:

I'm posting in this forum because I never ever use WiFi, and the problem is related to PPPoE over DSL. If this post belongs somewhere else, please feel free to move it with my apologies.

While I'm reasonably technical in terms of general computing, my networking knowledge is limited.

My setup:
- Router: Asus RT-AC68U running FreshTomato r2025.3 (performs PPP duties)
- SmartRG DSL modem in bridge mode

DSL sync works fairly quickly. However, after rebooting the router, I sometimes see multiple log entries similar to:
pppd[3007] Timeout waiting for PADO packets .

Usually, there are at least three or four of these entries before I'm authenticated by the PPP server. My ISP claims ignorance, and says they can't really see much more detail at their end than I can in my logs. It always manages to authenticate eventually, but one one occasion, it didn't authenticate until the 8th try. This can be annoying.

I came across this post on the Openwrt site, but wasn't sure if it contained the same problem
https://forum.archive.openwrt.org/viewtopic.php?id=55158

Unlike the poster in the above linked post, I always get a logon, it just sometimes takes quite a few tries.

Thanks for any help.

 

[Twiglets]

Don't see a problem.
The point is that the PPP session is made eventually, which gives you your 'internet'.

The process is meant to retry until the connection is made.
A problem would be IF the connection was not made ... the PPP negotiation could eventually fail because of too many retries.

I have only seen this happen once when the fibre connection was faulty.
The external fibre line was moved to another physical connection and all was well.

Extreme traffic levels upstream could slow the PPP connection down which may delay the PPP session being established but again this is rare.

Grasping at straws, if the connection to your SmartRG DSL modem is via bridge mode replace the ethernet cable to the modem from the router with a new good quality cable.
It is possible that you have a faulty cable that having difficulty interfacing with the modem, or there is extreme RF interference on that cable etc.
Again this is pushing the bounds of likelyhood BUT is possible theoretically !!!

If all is well and there is no sign of a faulty cable I would say that PPPoE is working as it is intended to.