Reply To: WAN connection drops on Asus DSL-N16 Hello, This is the second time I write this post because the first time I closed the forum tab by mistake and I lost the text, so I apologize if…

[aising]

Hello,

I’m writing again to update about the issue I had some months ago. The WAN connection was dropping, but not the DSL line, when downloading at max. speed. I thought it could be related with ESET, the Ethernet connection or even the driver, and I thought I fixed because connection kept stable for a while… but I really didn’t. So I gave up and I used a new router I got.

Two weeks ago I decided to give a last chance to my Asus DSL-16 and I started to search on the Internet about the issue. I found people commenting the PPP Echo function for the Internet Detection causes the WAN disconnection: they say that when downloading at the max. speed the line can support, the router can’t even manage the PPP echo requests because the full bandwith is occupied and the echo fails, so when it fails X times in a row the router drops the WAN connection because it thinks the connection is down when it isn’t. So let’s say it’s a false positive.

I also remembered what you told me about writing ‘lcp-echo-interval 0’ in the additional pppd options, but that didn’t work at all. So I noticed the router has its own option for Internet Detection (Disable/Echo PPP), PPP Echo Interval and PPP Echo Max Failures. So I tested writing a 0 in both, PPP Echo Interval and PPP Echo Max Failures and for now I’m more than one week with zero disconnections. It looks you were right! Anyway, I’m not sure if this is a “normal” behaviour or it should be tuned by Asus on the firmware…

Now I got two doubts about it:

1. ¿What’s the difference between setting PPP Echo Interval/PPP Echo Max Failures  to 0 and setting Internet Detection as Disable?
2. ¿What happens if the WAN connection really drops but I’ve set PPP Echo Interval/PPP Echo Max Failures  to 0 or Internet Detection as Disable? ¿The router wouldn’t detect the WAN connection is down? ¿How does the router react on these cases?

Thank you and Merry Christmas!

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