WAN Disconnect issue!

[activewalker]

Hi there.

My WAN has been disconnecting on and off now for along time now and its a real pain. It normally does this in the early hrs. If I'm using xboxlive or netflix for example, it will disconnect and then I have to sign back in to xboxlive again.This is obviously a problem if im on multiplayer, because if im mid game etc I will lose all progress.

I've had a look online and noticed people have had this issue before. I'm currently using the Netgear DGND3700v2, i've tried tweaking some of the settings putting things like ADSL settings DSL to ADSL+2 instead of auto and I've just set the WAN preference to Must use DSL WAN instead of Auto just to see if it will do anything.

I did have a set of homeplugs plugged to the router but unplugged them, the router stayed up for a few days then WAN disconnected aswell, so they are not the problem. My sky hub when in use also has the same problem, so can't be a router issue.

Here is my current router statistics and router logs:


System Up Time 195:11:22
Port Status TxPkts RxPkts Collisions Tx B/s Rx B/s Up Time
WAN PPPoA 38055 44226 0 1585 26414 00:35:14
LAN1 Link down -- -- -- -- -- --
LAN2 Link down
LAN3 Link down
LAN4 Link down
WLAN b/g/n 300M 12336960 7673339 0 4070 1019 195:10:38
WLAN a/n 300M 19847502 10989332 0 2981 1456 195:10:31


ADSL Link Downstream Upstream
Link Rate 10531 Kbps 1117 Kbps
Line Attenuation 38.5 dB 23.1 dB
Noise Margin 4.8 dB 10.0 dB



[UPnP set eventeletePortMapping] from source 192.168.0.3 Friday, March 14,2014 20:37:23
[UPnP set event:AddPortMapping] from source 192.168.0.3 Friday, March 14,2014 20:36:38
[UPnP set eventeletePortMapping] from source 192.168.0.3 Friday, March 14,2014 20:36:38
[Internet connected] IP address: 5.64.107.253 Friday, March 14,2014 20:36:17
[Internet disconnected] Friday, March 14,2014 20:36:09
[DoS attack: RST Scan] from source: 173.194.41.130:443 Friday, March 14,2014 20:36:00
[DoS attack: RST Scan] from source: 46.33.74.43:443 Friday, March 14,2014 20:35:57
[UPnP set event:AddPortMapping] from source 192.168.0.3 Friday, March 14,2014 20:35:56
[UPnP set eventeletePortMapping] from source 192.168.0.3 Friday, March 14,2014 20:35:56
[Internet connected] IP address: 2.127.5.107 Friday, March 14,2014 20:35:53
[Internet disconnected] Friday, March 14,2014 20:35:40
[UPnP set event:AddPortMapping] from source 192.168.0.3 Friday, March 14,2014 20:35:23
[UPnP set eventeletePortMapping] from source 192.168.0.3 Friday, March 14,2014 20:35:23
[admin login] from source 192.168.0.3 Friday, March 14,2014 20:35:16
[UPnP set event:AddPortMapping] from source 192.168.0.3 Friday, March 14,2014 20:34:38
[UPnP set eventeletePortMapping] from source 192.168.0.3 Friday, March 14,2014 20:34:38

Not sure if this most recent disconnect was due to me playing with the settings but my last WAN uptime held for around 3 days.

The 2 things I was going to try next was:

1. Plugging the router directly into the test socket.
2. Tweaking any settings on the Internet setup, Basic settings page if possible.

Any help or suggestions would be appreciated. Many thanks.

[Scubbie]

Could you be a little more specific as to the time frame please?

DLM will reset your connection if it thinks thatyour line needs reprofiling between 1am and 6am. Typically this is mostly done between 1am-2am.

Check all your setup and ensure that you have as good a setup in your home as possible. For example don't use an extension socket of cheap telephone extension lead to connect your router to the telephone line. If you haven't already, consider fitting and using a filtered faceplate.

Also check to see if there is any noise on your telephone line by performing a quiet line test.

If DLM has been triggered to reprofile your line refrain from frequently switching on/off your router or disconnecting it from the telephone line. This will only make it think that you have a problem and it will keep trying to reprofile your line.

Also don't tweak your line settings at the moment as DLM may negate these.

[activewalker]

Normally my WAN resets every couple of days, between 1am-6am like you said, but recently between 2am-3am.

I have my router plugged into my master socket normally, but over the weekend I fitted a new faceplate to the extension in the living room. The extension wire is good quality 4 pair telephone cable and my router statistics seem better.

I worked a night shift last night and I've checked my router statisics this morning and WAN reset again around 23:30hrs:

System Up Time 40:15:40

Port Status TxPkts RxPkts Collisions Tx B/s Rx B/s Up Time WAN PPPoA 250428 418542 0 476 13582 09:54:13 LAN1 Link down -- -- -- -- -- -- LAN2 Link down LAN3 Link down LAN4 Link down WLAN b/g/n 300M 2995693 1479483 0 5717054 181751 00:11:42 WLAN a/n 300M 5435891 3858719 0 4144048 550493 00:11:35

ADSL Link Downstream Upstream Link Rate 11262 Kbps 1117 Kbps Line Attenuation 38.5 dB 23.2 dB Noise Margin 6.9 dB 9.4 dB

[DoS attack: ACK Scan] from source: 173.192.222.172:443 Sunday, March 16,2014 23:38:33
[DoS attack: ACK Scan] from source: 74.125.132.188:5228 Sunday, March 16,2014 23:37:32
[DoS attack: ACK Scan] from source: 74.125.132.188:5228 Sunday, March 16,2014 23:37:12
[DoS attack: ACK Scan] from source: 74.125.132.188:5228 Sunday, March 16,2014 23:36:52
[DoS attack: ACK Scan] from source: 173.192.222.172:443 Sunday, March 16,2014 23:36:25
[DoS attack: ACK Scan] from source: 173.192.222.172:443 Sunday, March 16,2014 23:35:21
[DoS attack: ACK Scan] from source: 173.192.222.172:443 Sunday, March 16,2014 23:34:17
[DoS attack: ACK Scan] from source: 173.192.222.172:443 Sunday, March 16,2014 23:32:12
[DoS attack: ACK Scan] from source: 173.192.222.172:443 Sunday, March 16,2014 23:31:41
[DoS attack: ACK Scan] from source: 173.192.222.172:443 Sunday, March 16,2014 23:31:14
[Time synchronized with NTP server time-g.netgear.com] Sunday, March 16,2014 23:29:42
[DoS attack: ACK Scan] from source: 69.171.248.65:443 Sunday, March 16,2014 23:28:41
[Internet connected] IP address: 2.125.192.249 Sunday, March 16,2014 23:28:22
[Internet disconnected] Sunday, March 16,2014 23:28:15
[DoS attack: ACK Scan] from source: 75.98.17.62:80 Sunday, March 16,2014 22:45:23
[DHCP IP: (192.168.0.2)] to MAC address ----------- Sunday, March 16,2014 22:05:10
[DoS attack: ACK Scan] from source: 134.170.179.134:443 Sunday, March 16,2014 21:29:53
[DoS attack: RST Scan] from source: 67.55.73.117:80 Sunday, March 16,2014 21:17:23
[DoS attack: ACK Scan] from source: 134.170.179.134:443 Sunday, March 16,2014 21:03:05
[UPnP set event:AddPortMapping] from source 192.168.0.2 Sunday, March 16,2014 21:00:38
[UPnP set eventeletePortMapping] from source 192.168.0.2 Sunday, March 16,2014 21:00:38
[UPnP set event:AddPortMapping] from source 192.168.0.2 Sunday, March 16,2014 21:00:01
[UPnP set eventeletePortMapp

Just a couple of questions if I may:
Scubbie what does all that Dos attack mean? Is it still DLM even though WAN disconnected earlier than 1am?
I did a quiet line test, there doesnt seem to be any noise.

Sorry I changed my speed setting on the 2.4ghz without realising. I'll make sure I don't mess with it for now, until the problem is resolved

My mac address is for my laptop, I edited it out.

[Isitme]

DOS attack is just the alarming way the router tells you somebody has probed you ports. It is normally nothing to worry about, unless you get hundreds of thousands over a short period. This can slow your connection to a crawl. If you are worried, do a check on your ports at Shields Up https://www.grc.com/x/ne.dll?rh1dkyd2 Your ports should all show as stealthed.

Changing the wireless settings or any other settings on the router side of your router, will have no effect on your WAN connection unless they require a reboot of the router. Don't change anything on the ADSL(modem) side, such as lowering the noise margin as this will mess up DLM.

DLM will not usually work on the line outside the early hours, but if the noise margin is dropping low, that would trigger a resync. Run Routerstats Lite for a few days to make sure your noise margin is stable.

[Scubbie]

Sometimes changing the WiFi settings will require the router to be rebooted. This is as good as switching the router on and off, which can trigger DLM.

Do you have any switches on a timer?

Central Heating? Lights?

Perhaps an external security light being triggered when a local cat wanders past?

[activewalker]

I'm started running routerstats lite as you have said. I'll post up the graph in the next day or so. Thanks.

[activewalker]

Well I turned my thermostat on for the central heating around the time the noise levels dropped sharply, would that actually cause noise spikes of such? Also I have alarm sensors around the flat and yes I have a cat that would trigger them for the little red light to come on can this also affect the issue?

[Scubbie]

Yes on both counts.

It would depend on how it is all wired up, but any transformer can generate noise (REIN) which can affect your broadband signal.

::. Kitz - REIN .::

[activewalker]

Here's an update:

System Up Time 72:10:28

Port Status TxPkts RxPkts Collisions Tx B/s Rx B/s Up Time WAN PPPoA 4603 4787 0 767 3507 00:21:52 LAN1 Link down -- -- -- -- -- -- LAN2 Link down LAN3 Link down LAN4 Link down WLAN b/g/n 300M 4885208 2839027 0 17514 2162 32:06:30 WLAN a/n 300M 10425608 6868144 0 10890 6212 32:06:23

ADSL Link Downstream Upstream Link Rate 11262 Kbps 1117 Kbps Line Attenuation 38.5 dB 23.2 dB Noise Margin 6.1 dB 9.8 dB

At around 16:55hrs I turned my central heating thermostat on and it's definitely disconnected WAN. I was getting noise drops during the night but it wasn't causing WAN to disconnect. Is there possibly a workaround for this glitch?

[Scubbie]

Another member did fit something to their central heating to smooth things over when it switch on.

I'm not an electrician so I don't know the specifics involved.