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Author Topic: DIR-868L wifi/wan rebooting regularly  (Read 2347 times)

Esieens

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DIR-868L wifi/wan rebooting regularly
« on: November 22, 2016, 03:37:51 PM »

Hi,

About 5 days ago my DIR-868L Rev A bought in 2013 started losing wifi and WAN connection at the same time multiple times a day. Sometimes it will take an hour or two between two instances. Sometimes just a couple of minutes.

I thought my router was just faulty and purchased a new DIR-868L. Unfortunately the same issue is happening again.

So it looks like this is something else.

I live in a detached house so very few other wifi signals near me.

What else should I be looking at to try to troubleshoot this issue?

Thanks!
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FurryNutz

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Re: DIR-868L wifi/wan rebooting regularly
« Reply #1 on: November 22, 2016, 04:45:13 PM »

Link>Welcome!

IF two of the same router is experiencing the same problem then there is a problem else where...

  • Link>What Firmware version is currently loaded? Found on the routers web page under status.
  • What region are you located?
  • Are you wired or wireless connected to the router?


Internet Service Provider and Modem Configurations
  • What ISP Service do you have? Cable or DSL?
  • What ISP Modem Mfr. and model # do you have?
  • Is ISP Modem/Service using Dynamic or Static WAN IP addressing?
  • What ISP Modem service link speeds UP and Down do you have? Link> Speed Testing Sites
  • WAN Port Speed set to Auto or specific speed? Some newer ISP modems support 1000Mb so manually setting to Gb speeds can be supported by the router. Advanced/Advanced Networking/WAN Port Speed
>WAN and LAN Connection Rates and ISP Speeds FAQ


Wireless Configurations
Links>Wireless Installation Considerations and Managing Signal Congestion and Good Neighbour Policy
  • Ensure the default (dlink) SSID name is changed. Ensure that different SSID names are used between each WiFi 2.4/5Ghz radios. Can be anything and not something that's already in use by any neighbouring WiFi routers. Under Setup/Wireless/Manual.
  • What wireless modes are you using?
  • 2.4Ghz and 5Ghz routers: Try single mode G or N or mixed G and N on 2.4Ghz and single mode N or AC on 5Ghz?
  • Channel Width set for Auto 20/40Mhz or try 20Mhz only.
  • Try setting a manual Channel to a open or unused channel. 1, 6 or 11. 11 for single mode N if the channel is clear. 13 for EU regions. Try channel 48 or 149 on 5Ghz.
  • What security mode are you using? Preferred security is WPA-Personal. WPA2/AES Only. Some WiFi adapters don't support AES, so you might want to try TPIK only or Auto TPIK and AES.
  • What wireless devices do you have connected?
  • Ensure any devices with WiFi adapter drivers are updated.
  • Any 2.4Ghz or 5Ghz cordless house phones or WiFi APs near by that maybe causing interferences?
  • Any other WiFi routers in the area that maybe causing interferences? Link> Use a WiFi Scanner to find out. How many?
  • If you have any of these options, Try turning OFF or ON Short GI, WLAN Partition, Extra Wireless Protection and HT 20/40 Co-existence if you have it. Also testing with HT20/40Mhz Co-existence enabled will impact results as well. I prefer to use this option OFF. Recommended settings are default. Under Advanced/Advanced Wireless.

Router Placement
Forum User - "Well I feel really dumb. After moving the router away from other electronic devices my speeds are back to normal. Just a heads up for anyone experiencing slow speeds, you might want to move it away from other electronics and see if that helps."
3-6' feet minimum safe distance between devices.
Placement on main level floor and central in the building and WELL ventilated is preferred. Not in basements or closets as building materials, or near by electronics devices could interfere or hinder good signal propagation.
http://www.smallnetbuilder.com/wireless/wireless-basics/31083-smallnetbuilders-wireless-faq-the-essentials
http://www.foxnews.com/tech/2015/10/27/how-to-get-stronger-wi-fi-signal.html?icid=maing-grid7|main5|dl31|sec1_lnk3%26pLid%3D1839803170
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Cable:200mb/10Mb>NetGear C7800>DIR-882>DGS-1100>HP 24pt Gb Switch. COVR-3902/2202/1203,DIR-2680,890L,882,880L,868L,DNR-202L,DNS-345x2,DCS-933L,936L and 960L.
Go Here>Router Troubleshooting

Esieens

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Re: DIR-868L wifi/wan rebooting regularly
« Reply #2 on: November 23, 2016, 05:14:07 AM »

Thanks - I'll start providing some answers:

Link>What Firmware version is currently loaded? Found on the routers web page under status.
1.10

What region are you located?
UK

Are you wired or wireless connected to the router?
Both

What ISP Service do you have? Cable or DSL?
DSL

What ISP Modem Mfr. and model # do you have?
BT modem

Is ISP Modem/Service using Dynamic or Static WAN IP addressing?
Static

What ISP Modem service link speeds UP and Down do you have? Link> Speed Testing Sites
60Mbps down, 12Mbps up


As previously stated, this started about 5 days ago. Used to work perfectly well. Bought a new router, loaded same configuration. Got same issue.

Both WAN and Wifi do go down when it happens see logs extract below.

I use both 2.4GHZ and 5GHZ wifi networks.  I have tried a few channels, made no difference.
Tried to turn off 2.4GHZ network all together - no difference.

I live in a rural area so very few other wifi networks next to me.

Logs extract:
System]
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
[Time]Wed Nov 23 13:00:09 2016
[Message:1]no servers found in /etc/resolv.conf, will retry
--------------------------------------------------------------------------------------------
[Time]Wed Nov 23 13:00:17 2016
[Message:2]pppd 2.4.2b3 started by (unknown), uid 0
--------------------------------------------------------------------------------------------
[Time]Wed Nov 23 13:00:17 2016
[Message:3]PPPoE: Sending PADI for WAN-1.
--------------------------------------------------------------------------------------------
[Time]Wed Nov 23 13:00:19 2016
[Message:4]warning: no upstream servers configured
--------------------------------------------------------------------------------------------
[Time]Wed Nov 23 13:00:32 2016
[Message:5]PPPoE: Sending PADI for WAN-1.
--------------------------------------------------------------------------------------------
[Time]Wed Nov 23 13:00:35 2016
[Message:6]DHCP: Server receive DISCOVER from 00:0e:58:1e:05:7c.
--------------------------------------------------------------------------------------------
[Time]Wed Nov 23 13:00:35 2016
[Message:7]DHCP: Server sending OFFER of 10.10.10.4 for static DHCP client.
--------------------------------------------------------------------------------------------
[Time]Wed Nov 23 13:00:35 2016
[Message:8]DHCP: Server receive REQUEST from 00:0e:58:1e:05:7c.
--------------------------------------------------------------------------------------------
[Time]Wed Nov 23 13:00:35 2016
[Message:9]DHCP: Server sending ACK to 10.10.10.4. (Lease time = -1)
------------------------------------------------------------------------------------------
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FurryNutz

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Re: DIR-868L wifi/wan rebooting regularly
« Reply #3 on: November 23, 2016, 06:35:46 AM »

When this happens, can you access the routers web page?
What modem BT modem do you have?

On the new router, I'd like you to do a factory reset and this time, do not load the saved configuration from file. Use default settings, set up the WiFi SSID and PW and try setting the WAN port speed to 100Mb instead of Auto and test.

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Cable:200mb/10Mb>NetGear C7800>DIR-882>DGS-1100>HP 24pt Gb Switch. COVR-3902/2202/1203,DIR-2680,890L,882,880L,868L,DNR-202L,DNS-345x2,DCS-933L,936L and 960L.
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Esieens

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Re: DIR-868L wifi/wan rebooting regularly
« Reply #4 on: November 23, 2016, 06:59:08 AM »

Thank you - will try this tomorrow or Friday.

I have fiber broadband - one of the first modem from BT for fiber. I'll find the details when I get home.
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FurryNutz

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Re: DIR-868L wifi/wan rebooting regularly
« Reply #5 on: November 23, 2016, 07:04:21 AM »

 ;)
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Cable:200mb/10Mb>NetGear C7800>DIR-882>DGS-1100>HP 24pt Gb Switch. COVR-3902/2202/1203,DIR-2680,890L,882,880L,868L,DNR-202L,DNS-345x2,DCS-933L,936L and 960L.
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Esieens

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Re: DIR-868L wifi/wan rebooting regularly
« Reply #6 on: November 28, 2016, 02:21:33 AM »

Ok I think I found the problem and it was all my fault... ;(

My router is plugged into a power backup and I had recently changed the power saving options of this appliance. It seems it was causing the router to shut down from time to time.
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FurryNutz

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Re: DIR-868L wifi/wan rebooting regularly (RESOLVED)
« Reply #7 on: November 28, 2016, 06:55:22 AM »

Glad you found the root cause.

Enjoy.  ;)
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Cable:200mb/10Mb>NetGear C7800>DIR-882>DGS-1100>HP 24pt Gb Switch. COVR-3902/2202/1203,DIR-2680,890L,882,880L,868L,DNR-202L,DNS-345x2,DCS-933L,936L and 960L.
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