Anyone Using an Asus DSL-AC68U

Ping through the command prompt, and I am not sure how accurate speedtest really is when it was telling me my ping was 10ms when it was nearer 24. But if your pings were actually as high as 81.2ms you'd be on a high interleave. If your connection is dropping then you've the same issues as anyone else.

Okay, had no idea I could do that, but a quick search told me how! I was getting 32 or 33 ms - dunno if that's good or not, objectively speaking but it's very close to what speedtest.net gave me.
 
Okay, had no idea I could do that, but a quick search told me how! I was getting 32 or 33 ms - dunno if that's good or not, objectively speaking but it's very close to what speedtest.net gave me.

Assuming you're not on fastpath and your standard ping on fastpath would be 8-12ms) then I'd guess that you're on either a 16ms max downstream delay, or an 8ms max downstream delay with an 8ms max upstream delay (16/1 or 8/8). I'm currently 16/1 with INP 7/0 (downstream/upstream) and DLM isn't looking to budge it down unless I stop using the ASUS. I still wonder if FEC errors/FEC seconds are considered by DLM in whether it will make a positive change, as I'm getting a stupidly high amount with the ASUS.
 
Is there a reason you're still using the ASUS, other than wanting a single box solution - you've got ECI and HG612 modems either of which will remove the interleaving relatively quickly and give you some stability at least.
 
Is there a reason you're still using the ASUS, other than wanting a single box solution - you've got ECI and HG612 modems either of which will remove the interleaving relatively quickly and give you some stability at least.

Yes. I did run the Fritz!Box 7490 prior to it crashing randomly, presumably relating to my no NAT setup, but even with the weeks of running it DLM was very slow in taking positive action. I'm still trying to figure out the 'official' method of applying multiple public static IP's with a no NAT setup on the 7490 - hoping that will resolve the crashes. As for the ECI/HG612, I could go back to them but just don't like the idea of running three boxes instead of two (one for the modem, one for router public static IP with no NAT, and finally one for LAN IP allocation). I might resort to that soon though.
 
Is there a reason you're still using the ASUS, other than wanting a single box solution - you've got ECI and HG612 modems either of which will remove the interleaving relatively quickly and give you some stability at least.

Because the guy has been doing some amazing work in trying to find a solution to why the modem has these issue. I'd say that is most comendable...
 
Holding steady...

I've been back using the Asus on the latest firmware exactly 3 days after my line recovered from the previous DLM intervention.

Seems pretty stable so far - FEC errors are tiny now - around 300 in 3 days, instead of the millions it would be previously, although downstream CRCs are now much higher - around 21000 in 3 days. No line drops so far. Sync rate is pretty much identical to Openreach modem.

I guess we don't have easy access to an ES/SES count - does anybody have any opinion on how that kind of CRC count is likely to hit me with DLM (or not)?
 
I've been back using the Asus on the latest firmware exactly 3 days after my line recovered from the previous DLM intervention.

Seems pretty stable so far - FEC errors are tiny now - around 300 in 3 days, instead of the millions it would be previously, although downstream CRCs are now much higher - around 21000 in 3 days. No line drops so far. Sync rate is pretty much identical to Openreach modem.

I guess we don't have easy access to an ES/SES count - does anybody have any opinion on how that kind of CRC count is likely to hit me with DLM (or not)?

Without having the ES/SES count you've no way of knowing - you could have 21,000 ES or you could have 500. All depends on how the CRCs were generated, and seems to be the ES/SES that are taken into account.

For example, when I was using a HG612 which was unlocked, I could see that I would have bursts from time to time of 500+ CRC but only generated a couple of ES/SES. But single CRC would produce a single ES.
 
Hi Jim,

I submitted a set of baseline figures having had the Asus plugged in for 12 hours - With no DLM applied as my line has recovered (As mentioned before)

I received a response from Paul Lee saying that if I was concerned about DLM kicking in I should set the modem to 9dB and to 'stable' even though no other modem has needed this.

I presume it would make more sense to leave it exactly as is, on default settings, as if I apply the settings he has suggested all I'll achieve is losing a bunch of up/down speed, which is what DLM would do anyway? The default settings should then give you feedback, on how it ought to be performing, not with the ultra conservative settings he suggested?

Andy

I think the key is, if we can use those settings and then the modem starts working properly then it helps to isolate the problem. If you do that, and it starts working fine, but the speed drops considerably, then clearly we still need to keep working but hopefully it will get us closer to the ultimate solution.

So I applied firmware 2187 and did a factory reset on the device.

The quick setup mechanism did not detect a DSL cable and just sat there. I went back to the main settings and added the line manually. Once that had been done, the quick setup works to I was prompted for my provider etc.

Once all was stable I resolved to record the stats at 20 minute intervals:
20 mins - 7 CRC down, 0 up
40 mins - 11 CRC down, 3 up
59 mins - 13 CRC down, 5 up (based on a quick glance, alarm had not gone off at this stage)
60 mins - 15,000 CRC down and the device had just reset the DSL line.

Sorry Jim, but the hit on the line is likely to be severe overnight and I have no wish to connect it again to make the submission. The last time I connected for two hours and had 2k/3k CRC errors showing and I lost 10Mb/s of speed. If you want to tell me the files you want from the device I will connect to it and copy them off so I can email them somewhere.

Hi, thanks for checking this for us. I don't think we'd be able to collect the results that way - we need the submissions to come through the form. I appreciate that in some instances with DLM issues users won't want to keep it connected, so best solution in that instance is to send off the report and then disconnect.

I understand if you don't feel able to submit further reports, but I'll keep on with the ones we do have and see what I can find out.

Jim Asus :

Can you speak to the correct people and also get a fix time on when VPN will be fixed within the router.

no one can use VPN client mode on the router with VYPRVPN server / username/ password
its annoying as hell, and was one feature i wanted to work with this router.
can you please fix this.....

2 of the modes wont work either be it L2TP or OPENVPN or none of them work , though PPTP works but it is the most unsecure mode they must have fixed PPTP in the previous firmwares or the latest one, but the other 2 do not work yet...

so the fix needs to be done by asus instead.

PLEASE FIX THIS.

Hi Virus, this is the first I've heard about this issue. Can you please give me some further information about what's happening or link me to a thread? I'm not sure I totally understand what the problem is from the info you've provided.

Hi Jim. Are you saying that it does work on Infinity, or are there people who just haven't noticed that there are problems?

I'm asking because I want to buy one - and for once I actually have done some research and found these problems with it.

I think I'll just keep watching this thread to see if the problems get resolved before buying one...

My present understanding is that the problem is linked to the line - so a lot of lines work without issue, whilst others the modem doesn't deal with well. Of course, that doesn't mean that the line is the problem, because if other modems can cope with it then so should ours, but it does mean that the problem doesn't manifest itself on every Infinity line. However, I'm not the most technically literate when it comes to modems so this could be wrong and is just my best understanding of the problem.
 
Currently a happy DSL-N55U user. (after many firmware updates)

I can get fibre in my area, but I'm reluctant to switch to this router at the moment following all the issues others have had.

Are the issues largely resolved now?
 
Currently a happy DSL-N55U user. (after many firmware updates)

I can get fibre in my area, but I'm reluctant to switch to this router at the moment following all the issues others have had.

Are the issues largely resolved now?

No the issues aren't resolved at all.
 
so best solution in that instance is to send off the report and then disconnect.
But after the line reset won't the counters that make up the stats file have been reset to zero because of the line reset? I can see the logs being useful but not without some stats to match them to - is the submission sending data we don't have access to?
 
Exciting news. I've been using this modem/router for about three or four weeks now. Initially, I was on fastpath, but had a ton of CRC errors and got put on interleaved almost immediately. The only things I've done have been to upgrade to the latest firmware as it's become available, and make these settings changes (suggested by bitsNbobs):

Find the MTU setting (if the DSL-68U has one, wish i had investigated the options in more detail before returning my faulty one).

For ADSL set this to 1500 for FTTC set this to a max of 1452.
Save changes
Shut computer used to enter modem/routers config down
Disconnect the modem cable from the phone socket and then reconnect (you want a full fresh resync)
Wait until it is fully resynced
Power back up computer and other devices.

That was 14 days ago. Since then, I've been slowly regaining speed and now I'm back on fastpath!

As far as I'm know I'm the only person here on an FTTC connection who has got put on interleaved and then put back on fastpath?

Since now seems like the perfect time to watch for more stability problems, I'm going to be submitting 24 hour logs to ASUS routinely in the hope that I catch anything that crops up.
 
Last edited:
Exciting news. I've been using this modem/router for about three or four weeks now. Initially, I was on fastpath, but had a ton of CRC errors and got put on interleaved almost immediately. The only things I've done have been to upgrade to the latest firmware as it's become available, and make these settings changes (suggested by bitsNbobs):



That was 14 days ago. Since then, I've been slowly regaining speed and now I'm back on fastpath!

As far as I'm know I'm the only person on a FTTC connection who has got put on interleaved and then put back on fastpath?

Since now seems like the perfect time to watch for more stability problems, I'm going to be submitting 24 hour logs to ASUS routinely in the hope that I catch anything that crops up.

So you're saying that the suggestion of reducing MTU to 1452 seems to have cleared your problems? I find that interesting. Could something in the modem be struggling to handle packets with a higher MTU, sounds unlikely but I'll try anything at this point.
 
So you're saying that the suggestion of reducing MTU to 1452 seems to have cleared your problems? I find that interesting. Could something in the modem be struggling to handle packets with a higher MTU, sounds unlikely but I'll try anything at this point.

Not necessarily, but I figure the only variables here are my line, the firmware I'm on and the MTU tweak. My line I can't really account for, the firmware other people are still having problems with, so....?
 
Okay i have finally after months decided to retry it :P

One thing i read that i just thought i would go more in depth with is the mtu this http://www.dslreports.com/faq/5793 is a good guide to finding out the perfect mtu for yourself (mine was 1452 which is quite funny) and i do wonder if that is somthing that is getting messed up with the router as the default is set to max 1492 so it seems it is not calculating it which could mean its creating error's that way. ( i have had no crc errors apprantly :p )

So far the biggest thing i have noticed is they still have not changed the dsl setting page to not show pointless information or disable automatically settings which would not be needed on adsl or vdsl.
 
Last edited:
That would be great if that sorts out many of the issues and a simple change suggested by bitsandbobs. Looking forward to hearing the updates in due course.
I gather the standard setting of the MTU on the OR modem is 1452 also? (I seem to remember reading it but can't find it now)
 
I gather the standard setting of the MTU on the OR modem is 1452 also? (I seem to remember reading it but can't find it now)

For reference, using OR HG612 modem (and a DSL-N66U in Ethernet WAN mode [with settings MTU=1492, MSS=0])
http://www.speedguide.net/analyzer.php tells me:
MTU = 1492
MTU is optimized for PPoE DSL broadband. If not, consider raising MTU to 1500 for optimal throughput.
MSS = 1452
MSS is optimized for PPPoE DSL broadband. If not, consider raising your MTU value.
 
Back
Top Bottom