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rdrrdr

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#298884 24-Jul-2022 14:35
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I've had skinny fibre with their latest smart modem for around 8 months now. 

 

 

 

For the last couple of weeks, my link is dropping off randomly and staying down for various lengths of time. From a few minutes to several hours.

 

 

 

Skinny has sent me a new modem and it is the same. They are now telling me it is my cables which is just stupid. They escalted it to TFF And made me do a PPPoE test from my desktop and my desktop can connect only when the smart modem is able to connect. And never when the smart modem fails to connect. All different cables.

 

These are the logs on the modem everytime the link drops:

 

Jul 24 14:14:12 VRV9517 daemon.info pppd[31387]: LCP: Already receive LCP Echo Request in 10s, ignore sending it again.
Jul 24 14:14:22 VRV9517 daemon.info pppd[31387]: LCP: The last receiving LCP Echo Request time is 14s ago.
Jul 24 14:14:22 VRV9517 daemon.info pppd[31387]: FSM:sdata Send packet:9 
Jul 24 14:14:22 VRV9517 daemon.info pppd[31387]: PPPoE:31387 Received PADT message and notify PPP to teardown connection!
Jul 24 14:14:22 VRV9517 daemon.info pppd[31387]: Received PADT sid==old_sid
Jul 24 14:14:22 VRV9517 daemon.info pppd[31387]: fsm_close 9
Jul 24 14:14:22 VRV9517 user.info autowandetect: AWD: detected Linux netlink event-3!
Jul 24 14:14:22 VRV9517 user.info autowandetect: ppp0 is down
Jul 24 14:14:22 VRV9517 daemon.info pppd[31387]: fsm_close 1
Jul 24 14:14:22 VRV9517 daemon.info pppd[31387]: fsm_close 1
Jul 24 14:14:22 VRV9517 user.info autowandetect: AWD: detected Linux netlink event-3!

 

Any ideas?

 

Is anyone from skinny/spark watching this forum?

 

Is there a way to attach the full log to this post?

 

 


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cbrpilot
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Spark NZ

  #2946086 24-Jul-2022 23:38
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Hi rdrrdr,

 

Hopefully I've found your connection from looking for a stop session at the around the time you specified on TFF with Skinny.

 

Yeah I can see exactly what you can see - session is up for between 45 seconds to a few hours at a time.  What we can see on our end is that the session is being torn down at our end due to your router not being reachable from our BNG - we will have sent three keep-alive messages that haven't been responded to before we deem the session is down.  I am not sure if our BNG will send a gratuitous PADT in this type of scenario or not.  Either way if that were occurring it would be a symptom rather than a cause.  There is also a possibility that the TFF OLT (the box that the ONT in your house talks to) may also be the one sending the PADT.

 

Given that you are getting the same behaviour from two home routers, it seems very unlikely that this is the issue.  I assume you have tried replacing the cable between the Smart Modem and the ONT (just to rule this out)?

 

From what you have posted, it sounds like the approach that Skinny is taking by logging a fault with TFF is the best course of action. 





My views are my own, and may not necessarily represent those of my employer.


 
 
 

You will find anything you want at MightyApe (affiliate link).
rdrrdr

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  #2946095 25-Jul-2022 05:11
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Hi

Thanks for looking into this.

I've tried different cables and also directly connecting my windows desktop. It's the same.

Is it possible that the port on the ONT has a problem?

Thanks
Deepak

rdrrdr

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  #2946096 25-Jul-2022 05:37
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How long would 3 keep-alive messages take? The link works great exactly upto the arrival of the PADT messages. It's not like it stopped working and then I see the PADT.



cbrpilot
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  #2946113 25-Jul-2022 08:57
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Hi rdrrdr, the current keep-alive interval is 10 seconds, so  your connection would need to be interrupted for about 30 seconds before our BNG would consider the session is down.

 

If the connection were usable right up until the PADT is received that would add weight to the idea that it is not the BNG sending the PADT. 

 

What do the lights on your ONT do when it disconnects?  Specifically what is the status of the PON light?





My views are my own, and may not necessarily represent those of my employer.


rdrrdr

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  #2946114 25-Jul-2022 09:02
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All the lights are always green. Even when my desktop is unable to connect.

rdrrdr

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  #2946275 25-Jul-2022 16:33
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They are now looking at arranging a Tech Visit.


rdrrdr

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  #2947334 28-Jul-2022 12:37
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cbrpilot:

Hi rdrrdr,

 

Hopefully I've found your connection from looking for a stop session at the around the time you specified on TFF with Skinny.

 

What we can see on our end is that the session is being torn down at our end due to your router not being reachable from our BNG - we will have sent three keep-alive messages that haven't been responded to before we deem the session is down.  I am not sure if our BNG will send a gratuitous PADT in this type of scenario or not.

 

 

So, I was able to observe the logs just as it went down today. And there was a gap of over 20 seconds between the link going down and the PADT message being logged.

 




cbrpilot
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  #2947481 28-Jul-2022 16:26
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What did TFF say about the connection?





My views are my own, and may not necessarily represent those of my employer.


rdrrdr

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  #2947484 28-Jul-2022 16:29
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cbrpilot:

 

What did TFF say about the connection?

 

 

 

 

Have not had a visit yet due to covid isolation. 


rdrrdr

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  #2963799 6-Sep-2022 09:14
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cbrpilot:

 

What did TFF say about the connection?

 

 

 

 

TFF came and replaced the ONT. They claimed that the signal strength was good enough and the problem was not on their side... but replaced the ONT to make sure.

 

 

 

The problem disappeared after that. So, it was the cabling and the ONT which was the problem.


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