Moved: Reply To: ASUS DSL-AX82U Synch Issues Hmm i’m just about ready to give up on this asus router now, somethings changed and I just cannot get it to sync up as high as it used to....

[Superhands]

Hmm i’m just about ready to give up on this asus router now, somethings changed and I just cannot get it to sync up as high as it used to.

With this asus router it currently syncs at 54mbps with loads of FEC errors and some but far fewer CRC and ES errors.  If I swap over to my ISP (sky) supplied router, it syncs at 64mbps and far far far fewer FEC and other errors.

Are there any settings, aside from snr, that would affect it?  Snr is 3.2db on both routers.  I’ve tried replacing the Asus with a new one and the same thing happens on that.  I’ve tried updating to gnutons build as well in case that made any difference.  If I can’t figure out what’s happened i’ll just jump back to the Sky router I think even though it’s only wifi 5.

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[UK Sentinel]

I am surprised the DSL-AX82U does not synch close to that of your Sky Hub .

Is it possible to screen dump you DSL Settings and DSL Log page so we can have a look.

What model is your Sky hub as I am curious as to what DSL CPU it might use ?

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[Superhands]

Sure I have attached some screenshots.
Weirdly it’s not just the sync speed that is lower but it is also the max attainable, when the sky router is on the max attainable and the sync speed is about 64mbps.

 

Also interesting is that in this screenshot the asus one has been plugged back in for about half an hour and there is 7305 FEC errors.  With the sky one it has roughly 750 per 15minutes, or roughly 1500 over the same time frame so quite a lot less.  I’ve been getting a fair few CRC, ES, SES errors during the course of the day with the Asus but difficult to know when as it’s not constant all day.

 

Sky sky one is the SR203

 

 

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   dsl-settings.jpg
   

2. 

   dsl-stats.jpg
   

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[UK Sentinel]

Advanced Settings > Administration > DSL Settings (Administration – DSL Setting) page if you could ?

 

 

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[Superhands]

SRA is enabled here but only just turned that on to see if it made a difference (it didn’t), was previously off

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   dsl-settings-2.jpg
   

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[UK Sentinel]

Interesting, I had a look, keep SRA disabled unless you have a few DSL disconnects.

Your settings generally look good, are you paying for the Sky Superfast 80 broadband or are you capped at say 50 Mbps.

FEC are high but not an issue really, no CRC’s so that is good, G.inp is on (downstream) which is normal and your level of interleaving is low (which is good) and you are using all the synch rate available.

SNR of 3 dB is ideal for G.inp so that looks good also.

The only issue I do notice is that you have INP-REIN 1 which does cap your synch rate slightly to around 90% of total throughput – this is a DSLAM /CAB setting etc.

I will plug in my DSL-AX82U later and check the INP-REIN value on mine.

 

BTW – The Sky SR203 hub I cannot tell if this actually supports G.inp ?

 

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[Superhands]

I do get CRCs etc over the course of the day, the prior screenshots the router had not been up long. Here’s a fresh one now it’s been up a few hours and you can see CRC, ES etc errors have occured.  These don’t occur on the Sky one.  Would have thought in this case it would be a hw fault with the asus, but have recently replaced that. The sky one does support ginp too

 

Also am paying for the 80/20 package although am about 800m from the cabinet so not expecting full speeds. Seems very odd though that the sky one should sync so much higher.

 

 

 

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   stats.jpg
   

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[UK Sentinel]

These are my stats from last year (found an old post) and my INP-REIN is 0:00 but that is using an older firmware.

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[UK Sentinel]

So for some reason (CRC – INP etc) you are being synch rate limited (a little) when compared to SR203, we just need to work at why and if this can be reversed.

Your configuration settings generally look good and as you say, your line length (attenuation) is not ideal.

FYI; CRC errors are mainly Layer-1 issues and hence more physical in nature.

Q1. when you plug is you Sky SR203 hub, do you use the same DSL cable as used for DSL-AX82U.

Q2. do you switch of the DSL-AX82U nightly ?

Q3. do you make many changes to the DSL-AX82U as this can impact synch rate overtime.

Q4, Are DSL-AX82U and SR203 hub in same location in you home ?

Q5. when was last time a full factory reset was carried out ?

Q6. are you running the latest firmware for the DSL-AX82U ?

 

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[Superhands]

Q1. when you plug is you Sky SR203 hub, do you use the same DSL cable as used for DSL-AX82U.

Yes, came cable

Q2. do you switch of the DSL-AX82U nightly

No

Q3. do you make many changes to the DSL-AX82U as this can impact synch rate overtime.

No, until issues cropped up a while back I would not touch it, except for updating firmware

Q4, Are DSL-AX82U and SR203 hub in same location in you home ?

yes

Q5. when was last time a full factory reset was carried out ?

On this unit I haven’t done one, as I not long had it replaced thinking it could be a physical issue with the router. So this unit is about a week or so old

Q6. are you running the latest firmware for the DSL-AX82U ?

Not currently, it was until this morning when I reverted back to the previous version to see if it made much difference. Same issues on this version, current one, and also gnutons current version.

thanks

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[UK Sentinel]

@GNUtons firmware should not impact DSL synch rates as his work is adding ASUWRT-merlin ontop etc.

If pos, can we just leave all as is for a week (no reboots – mods – updates etc.) and see what happens with stats say next Friday.

Will be an interesting exercise to see if synch rate increases ?

(I will create an new thread for this)

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[Superhands]

Sure thing I don’t intend on messing around with it any further as I’ve sort of run out of things to try now

it had been up for about 2 months with these issues before I started swapping it over etc to get to the bottom of it.

In honesty things were solid until I went to the current latest firmware months ago and it all started going downhill then. Frustratingly reverting to the prior fw from mid last year didn’t resolve it however it’s like there was some stuff still hanging around.

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[UK Sentinel]

Did any previous firmware’s have improved synch rate as we could try flashing that next Friday etc. after a full factory reset if nothing interesting happens this week

I can feed this back to ASUS for consideration maybe.

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[Superhands]

The issues seemed to coincide with updating to the latest official version, so the prior one 3.0.0.4.386.49608 would have been the better version.

However, i’ve now tried going to both latest 388 and earlier 386 with a factory reset and it didn’t seem to improve. Plugging the Sky router in immediatelty boosted the speeds back up and no errors.

I am stumped now, it’s almost as if the cabinet just does not like this asus router.

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[UK Sentinel]

Superhands wrote:

However, i’ve now tried going to both latest 388 and earlier 386 with a factory reset and it didn’t seem to improve. Plugging the Sky router in immediatelty boosted the speeds back up and no errors.

Alas there will be a little variation between different DSL chipsets and even variations in sync of the same brand. Unfortunately, keep factory resetting and setting up the DSL-AX82U and then plugging in the SKY Hub will kill your IP profile, need to leave all alone for a good week to 10 days, just so cab can adjust to the new kit etc. which will then adjust SNR etc. hopefullly.

Be patient

 

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