Two houses, two modems, same disconnect problem.

Forums › LAN (ethernet/Wifi/routers/Bluetooth) › Two houses, two modems, same disconnect problem.

1 | 2

josephhinvest

1543 posts

Uber Geek

ID Verified

Trusted

#833181 9-Jun-2013 19:19

Did you read about the beer fridge causing cellular blackouts?
Could it be some other unlikely piece of equipment that you have bought with you to the new place?
I guess anything with a timer or thermostat or similar that is causing electrical interference could be the culprit.

Cheers,
Joseph

aphocus

37 posts

Geek

#833353 10-Jun-2013 08:52

Thanks for the tips guys, router reset itself again at 6am even with the wrong time set.

I'm probably competent enough to do a self install (built myself a headphone amp, so this should be easier) but I don't think I have the right equipment, perhaps someone could point me in the right direction?

RunningMan

8954 posts

Uber Geek

#833376 10-Jun-2013 09:27

What exactly happens at this time?

You described it as a disconnect, and a router reset. What happens precisely, and how do you recognise that it has happened?

i.e. what happens with the following?

Modem status lights
PPP session
DSL sync
WiFi connections
Wired ethernet connections
etc

aphocus

37 posts

Geek

#833860 11-Jun-2013 05:20

its a ASDL desync that lasts about 4-5mins.

Sorry for the confusion.

RunningMan

8954 posts

Uber Geek

#833913 11-Jun-2013 08:35

So the modem keeps going, and the connection re-establishes OK, or do you need to do it manually?

Is there POTS on the line? If so, what happens to that?

Ragnor

8219 posts

Uber Geek

Trusted

#834115 11-Jun-2013 12:39

aphocus: Thanks for the tips guys, router reset itself again at 6am even with the wrong time set.

I'm probably competent enough to do a self install (built myself a headphone amp, so this should be easier) but I don't think I have the right equipment, perhaps someone could point me in the right direction?

Trying a different modem model is still going be the fastest way to rule out or er rule in your Dlink(s) as the problem.

Borrow a mates or family members modem for a day? or get a $20 2nd hand one off trademe for testing.

aphocus

37 posts

Geek

#845376 26-Jun-2013 08:00

Hey, so an update, I got a new router (Dynalink RTA1320V6) internet no longer drops at 6am, but some nights I get drops still, I was getting a drop every 2-3mins during the storm we had, So I'm gonna assume the lines are shoddy.

I sync at 10-12Mbps now as well.

GoodSync

GoodSync. Easily back up and sync your files with GoodSync. Simple and secure file backup and synchronisation software will ensure that your files are never lost (affiliate link).

mercutio

1392 posts

Uber Geek

#845496 26-Jun-2013 11:23

aphocus: Hey, so an update, I got a new router (Dynalink RTA1320V6) internet no longer drops at 6am, but some nights I get drops still, I was getting a drop every 2-3mins during the storm we had, So I'm gonna assume the lines are shoddy.

I sync at 10-12Mbps now as well.

dsl-502t with openwrt won't work well on the cabinets, but fine on exchange ime. although that's most likely a line card issue.

fwiw, i used to run dsl-504t with openwrt and the stability was good, but upload rate took a huge dive (worse than yours) and i tried lots of different modems, and they all had stability issues. but it was only after changing from exchange to cabinet. before the cabinet was put in things were stable.

ping also went up moving to cabinet. in the end i went with tp-link td 8840 and found that it could reconnect within a minute most of the time. i play starcraft, and starcraft drops players who are out for longer than a minute, and generally it would reconnect quick enough to stay in. that's with a static ip, so the ip would stay the same.. i did have chorus change line pairs, which made my sync rate go down slightly but didn't seem to fix the issue.

you can't do much about the quality of the lines other than getting chorus to try a different pair.

i dunno how much ram dynalink 1320v6 has, but the dynalink 1320 straight had 8mb of ram, and often suffered stability issues where the web interface would get extremely slow and connections would fail at the same time. it wouldn't surprise me if they have bumped it to 16mb or more now.

modern modems like the new version of tplink 8960 (v4) have 64mb of ram. and 8960 v1 has 32mb of ram.

td8840 only had 8mb of ram too, but i was running in half-bridge mode to a PC.. it should be similar to the 1320v6 when running in half-bridge mode at least.

aphocus

37 posts

Geek

#851308 9-Jul-2013 07:08

OK, so today the internet dropped at 6:05am, the connection re-established a lot quicker (30s~) instead of the usual 5mins though.

My problem now is that this router has a max connection limit of 500, which is just utter crap for a modern internet connection, which explains why my TCP connections drop constantly "host closed connection".

With my old 502T which also had 16MB of RAM it could easily handle 4k connections, but this router barely has 300KB of RAM free :\

I see this Router may be supported by OpenWRT which might be a good idea to try.

Well my flatmates are looking at moving soon (Land lord giving us trouble), so I'll wait till that's sorted before considering a line filter.

webwat

2036 posts

Uber Geek

Trusted

#855239 14-Jul-2013 13:14

Do you have an alarm at your place? Even though it may not be monitored, its probably still wired into the phone line and needs a master filter. The upstream speed appears to vary a bit (attainable is lower than actual bitrate) and maybe coming from interference such as an alarm or something. Those things tend to be programmed to dial home at preset times.

Time to find a new industry!

Goosey

2829 posts

Uber Geek

Subscriber

#855301 14-Jul-2013 15:32

6am is about the time night rate power switches off. Could it be this causing the issue (i.e. on your switchboard you will see a large mechanical looking thing that slightly pops out and retracts each time the night rate is comming on and off. I know when we listen to AM radio we can hear it interfere. Once it failed due to dust and a huge buzz could be heard. A simple vacume clean fixed it until the sparky looked at it.

Ragnor

8219 posts

Uber Geek

Trusted

#855997 15-Jul-2013 17:00

aphocus:
My problem now is that this router has a max connection limit of 500, which is just utter crap for a modern internet connection, which explains why my TCP connections drop constantly "host closed connection".

Those cheap Dynalink's are best used in " half bridge" mode to another router, this makes them only do the modem job and not the NAT/routing/dns etc.

The setting for PPPoA half bridge is called ip extension in the Dynalink, refer to this old blog post about it or search Geekzone for "half bridge":
http://www.ben.geek.nz/2006/11/adsl-routing-solution-in-detail/

You can probably configure OpenWRT on your DLink to use one of the LAN ports as a WAN port and use that as the router.

Alternatively OpenWRT runs on the TP Link TL-WR1043ND which are really cheap:
http://pricespy.co.nz/product.php?p=529115

Peppery

919 posts

Ultimate Geek

Trusted

#856037 15-Jul-2013 18:12

As above, try running it in half bridge. I love the RTA1320, it has actually been the most reliable ADSL2+ modem I've come across.

aphocus

37 posts

Geek

#857653 16-Jul-2013 20:16

Thanks guys, I'll try get my Asus RTN16 out of "switch" mode with IP pass-through, currently running my old modem (the dlink) since it gracefully handles conntrack purging.

Network downtime is a real pain though with 3 computers and people awake at random hours.

1 | 2