[TerminatorUK]

Just crashed again this morning – really strange.

This time:

• PCs connected on wired were OK
• Wireless clients weren’t able to connect to websites
• A wireless client (connected to a minecraft server) was still able to carry on playing
• The router’s admin console couldn’t be reached

Such a shame to dump the hardware – it was an expensive router and the performance is excellent when it is working.

I believe there was some suggestion earlier on in this thread to increase the group key rotation interval from the default 3600 seconds…too – I’ll get that increased and see if it makes any difference.

Other than that – it might try a different firmware again.

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[TerminatorUK]

Well that didn’t take long – I had a further crash in the early hours of the morning, rebooted and had another crash about 15 minutes after the reboot!

I’ve now restored the factory settings for this firmware and setup the absolute basics (PPPoE username/password, WiFi 2.4/5ghz SSID settings and port forwarding I use) – everything else left at default and not touching any AI protection settings this time.

I’ll see how long it lasts this time! :)

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[TerminatorUK]

UK Sentinel wrote:

Welcome back, I would assume by activating the ASUS AIProtection – parental control has put a drain of available RAM (memory) so this is probable why the DSL-AC88U locks up after a few days. Did you happen to notice the available RAM at any point before the router failed ?

Thank you!

I didn’t actually, however, it definitely seems to be a memory leak after checking it this week.

When I posted this issue on the 20th, the memory was at 179MB used – it is now (today – 23rd) at 200MB used so seems to be growing by about 7MB/day.

 

Grisu wrote:

To keep things simple: Why dont you use a timer on power supply which turns off for a minute once a day (sometimes at night e.g. 5am). So your router refreshs daily and will work for 24h without problems.

Good suggestion!  I would try and like to solve this within the router’s settings however if possible.

TODO wrote:

There is a reboot scheduler. But I recommend going back to v1.10.05 build503 which is the most stable. It is not worth dealing with the hassle of having no internet connection randomly in the middle of the day and a non responsive router page and you have to manually go and restart (very annoying when not home)

Gold star for you – thank you VERY much for this; it is massively appreciated!!

Yes, I agree v1.10.05 build503 worked perfectly for me, however, now I’ve upgraded to FTTP and only using the Ethernet WAN port – on this firmware there was an annoying mechanical ‘click’ every one minute like it was trying to restart the DSL modem as it wasn’t connecting.

Upgrading to firmware v1.10.08 build593 resolved that clicking but introduced this memory leak and causes the router to hang.

I have, however (thanks to your help – I totally missed this setting) set the router to reboot once a week @ 4am on a Sunday which isn’t ideal but minimal disruption if this resolves the issue.

I’ll let it run for a while like this and I’ll post back with my findings.

 

Thanks to everyone again for your suggestions – absolutely cracking forum :)

 

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[TerminatorUK]

*sigh* I’m back – unfortunately the router crashing issue has reared its ugly head as before when I used to use upgraded firmwares.

Just to be 100% clear on what happens I find after a random length time (weeks, sometimes even days) that the router ‘locks-up’ and I get an internet connectivity warning on all connected devices and none of them (even a wired PC) can get to router.asus.com to check the admin page.

I reboot the router and all is well.

Ironically, after my previous post, everything appeared to be OK and I had stable operation for approximately 3 weeks.

Then (and I think this is very coincidental), I used the parental control feature to limit hours of operation on a couple of devices and literally the morning after I did this, the issue occurred.

I rebooted the router, turned off the feature and rebooted again.

This time, I got 3 days use out of the router before it crashed again today.

Really appreciate any further suggestions – seems I’m stuck between a decision to either have a clicking router or one that crashes at random times!

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[TerminatorUK]

Thank you so much!

I’ve upgraded to the latest v1.10.08 build593 and great news – the ticking has indeed gone!

I’ll report back if I encounter any of the previous memory leak / lockup issues I had before – fingers crossed as I’m not using the DSL modem component that will be ok!

Thanks again for your help – very much appreciated :)

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[TerminatorUK]

Hi all – firstly just wanted to say this is a lovely forum – far more help going on here than the official Asus forum! :)

I just wondered if you wouldn’t mind if I posted this really odd ‘issue’ if you can call it that (more of an annoyance).

I’ve had the DSL-AC88U for some time (about 2 years) and came to settle on firmware v1.10.05 build503 which has been very stable with my FTTC VDSL 80/20 service.

I found later firmwares to have a memory leak that caused the router to lock-up after about 2 weeks).

Today I’ve been lucky enough that FTTP (full-fibre) installed and I’ve upgraded to a 500/80 service but wanted to continue using the DSL-AC88U via it’s E-WAN port if possible.

To ensure everything was a ‘clean’ config, I reset the device back to factory default and used the QIS interface to setup the device using PPPoE, plugged in BT’s ONT box via the ethernet port into the E-WAN port on the on the DSL-AC88U.

Sure enough, everything has worked and I’m getting an excellent stable connection at the rated speed.

The only ‘issue’ I’m experiencing is that (exactly) every 1-minute the router mechanically ‘ticks’ because the DSL cable is no longer present (almost like it’s doing a diagnostic reset on the port to try and get it connected).

I’ve scoured every menu and there doesn’t seem to be any way to fully disable the DSL and stop this from happening.

If I plug in the DSL cable to the old VDSL 80/20 service which they’ve left behind (which is still going to be here until BT are doing a copper recovery next year apparently!), the DSL syncs and the ticking stops.

Obviously that isn’t a solution as the line will be removed at some point.

Just wondering if anyone has experienced this and has a solution for it?

I’m willing to upgrade the firmware but don’t want to suffer the router lock-ups + I couldn’t see it as a specific ‘fix’ in the release notes the releases since the one I’m running.

Many thanks in advance! :)

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