Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.




19 posts

Geek


#271918 1-Jun-2020 21:59
Send private message quote this post

Hi All,

 

I've been trying to troubleshoot a strange issue I'm having, and what I've managed to find online hasn't solved the issue so I need a little more assistance. The 2.4 GHz network is 802.11g/n and the 5 GHz is 802.11ac.

 

When I changed ISPs I received a Huawei HG659 with my VDSL connection and have been using that as both the modem and router since we have only two regular users. Devices have been split between the 2.4 GHz and 5 GHz networks based on requirements, e.g. Printer is on the 2.4 GHz, Laptops on the 5 GHz. Everything was working without issue for around 1 1/2 years. A few weeks ago an intermittent connection issue started that would cause all devices to "lose" the 5 GHz network and go through a cycle of trying to reconnect to it, then managing to connect but not having internet, and then eventually getting internet connection back.

 

While this happens, devices connected via wired LAN and ones on the 2.4 GHz network continue to have normal access/usage and are unaffected. If I move any of the devices that were experiencing disconnects onto the 2.4 GHz network, then they stop having issues and work as normal. I haven't noticed any trend or pattern to the disconnects other than it only happens on the 5 GHz network.

 

My first thought was that the 5 GHz equipment in the router was dying, so I dugout an older D-Link DIR850L router that I had in the cupboard and bridged it with the HG659 acting as the modem. I set everything up, and to my surprise, the 5 GHz disconnects kept happening. Again the 2.4 GHz and wired connections were fine. I've tried checking settings on both routers to make sure they were on sensible options, and as far as my knowledge goes, they appeared to be configured correctly. I also doubted it was a settings issue since the HG659 had gone from working to problematic without any changes being made.

 

I've used a wifi scanning app on my tablet to check for other networks clashing with ours. There is a little congestion on the 2.4 GHz, but we're surrounded by houses (not apartments) so they're significantly weaker than our network. I only pick up other's 5 GHz networks in some parts of the house and the channels don't clash.

 

The only internet/network related thing I can think of is that it started roughly around the time Chorus contractors started installing fibre in our street, but I think that is a red herring and that any issues they might cause should affect all three network connection methods.

 

Summary of the main things I've tried:

 

     

  1. Changed routers.
  2. Changed which frequency devices were attached to.
  3. Checked the behaviour on multiple devices.
  4. Tried to identify patterns.
  5. Checked router settings for:

     

       

    1. Channel width - 20/40 for 2.4 GHz and 20/40/80 for 5 GHz.
    2. No connection schedule set.
    3. Channel auto scan - on.
    4. Group key update interval - 3600 seconds (default for both 2.4/5 GHz).
    5. 5 GHz 802.11 mode - set to 802.11ac only to ensure there wasn't any strange switching going on.
    6. Security - Both 2.4/5 GHz using WPA2 with AES.
    7. DHCP lease time - 10080 minutes (7 days).
    8. Checked number of devices registered to 5 GHz to make sure it wasn't too many. Culled a few friends devices from the list to double check.

     

  6. Scanned for wifi conflicts with neighbours.
  7. Tested range - Still happens even within two metres of the router

 

Some things I haven't tried:

 

     

  1. Changing modems - although I think if this was the problem then it should affect all connection methods.
  2. Checking if all devices disconnect at the same time - Realised I didn't know the answer to this while writing this post.
  3. Changing ISP - Same thoughts as #1 above

 

Anyone else experience this issue before or have advice on further troubleshooting?


Filter this topic showing only the reply marked as answer Create new topic
896 posts

Ultimate Geek

Subscriber

  #2496314 1-Jun-2020 22:14
Send private message quote this post

Try restricting the 5GHz channel to non-DFS ones. You can find the info here https://www.rsm.govt.nz/assets/Uploads/documents/b8c1468d8e/5-ghz-info-leaflet-2019-update.pdf


1096 posts

Uber Geek

Lifetime subscriber

  #2496316 1-Jun-2020 22:30
Send private message quote this post

Try a fixed channel on 5GHz.




Gordy


 
 
 
 




19 posts

Geek


  #2496332 2-Jun-2020 00:14
Send private message quote this post

Thanks guys. It was already on one of the "allowed" channels shown on that list, but I've manually set it to one of the allowed ones. I'll transfer some devices back to the 5 GHz and see if they have any disconnects over the next day or two.




19 posts

Geek


  #2496656 2-Jun-2020 12:29
Send private message quote this post

snnet:

 

Try restricting the 5GHz channel to non-DFS ones. You can find the info here https://www.rsm.govt.nz/assets/Uploads/documents/b8c1468d8e/5-ghz-info-leaflet-2019-update.pdf

 

 

I've re-read this chart and realised that it was automatically on a DFS channel and that the one I'd selected was a DFS one too (157).

 

I've still got the DLink connected and it only does 36 -> 48 and 149 -> 165 so I've set it at 48.


334 posts

Ultimate Geek


  #2496822 2-Jun-2020 14:55
Send private message quote this post

I had what maybe a related issue on my skinny HG659B router on fiber 100/20...

 

Intermittently, a mobile may find itself without internet via wifi... affected both 2.4G and 5G wifi. The mobile would always connect to wifi, but there would be no actual internet service. It affected one mobile at a time, and i felt it was likely to occur if that mobile had been trying to connect on and off several times. Once a given mobile was connected, it seemed to stay connected. everyone else had normal service, but next time it happened, it might affect a different mobile.

 

I found a router reboot always restored service. I tried changing lease times both longer and shorter, but no change noticed. I also tried fixed channels (for 2.4G) rather than auto. Again, the problem persisted. Made no difference if i was beside the router hence a really strong signal.

 

Since the issue was random, and intermittent i couldn't generate the problem at will. So I cant be sure i have solved the problem nor can I be sure what the problem was. Since other PCs and mobiles are unaffected, it had to be just the wifi only, not the ONT, or ISP. Ethernet PCs never had a problem.

 

For me, the problem self-solved when i added 2 more cheap routers as wired access points (HG659b, and HG630) to improve wifi coverage in the house.

 

I began to suspect the HG659b might only support 16 devices at a time, and now since the load was spread across additional routers, so to speak, i might not be reaching the max limit. But, really, i am guessing.

 

And for what its worth... i found whilst streaming internet radio (dedicated app, or when using Intent Radio on Tasker) if i am using 2.4G the station buffers intermittently and often, but no problems on 5G. A speed test is always fast, over well over 30Mb/s on 2.4G, so it isn't speed or signal level related.

 

I now just use the 5G for my mobile and my laptop, which is fast at 100Mb/s, and buffering and wifi issues are gone. Where i can, i use either-net connections. I also discovered today, that if i set the second HG659B as access point using the main HG659B SSID and password (auto channel selection), my mobile automatically changes router as i wander around the house to the strongest signal. Just like a mobile handing off between cell towers.

 

Not sure any of this will help you, it is just my observations for my possibly related issues.

 

 

 

 


2207 posts

Uber Geek


  #2496827 2-Jun-2020 15:22
Send private message quote this post

5.8GHz  is used for much more than just wifi.
So you will never see all devices using 5.8 on a PC/ph scanning software. That will only show wifi use, not other things using 5.8

 

You could still have interference issues with 5.8 , even though your PC/ph scans cant detect it. You'd need some Pro equipment to do proper scans of 2.4 & 5.8

 

Anyone in the house or nearby with RC gear, FPV , camera drones , video senders ,wireless cams , various boosters or range extenders (wifi or video)
Could even be a neighbor running illegal power levels , or something badly designed swamping 5.8
not at all common but can happen . Ive only seen that once in may years , neighbor would turn on something and swamp wifi freq :-)

 

When you connected up the Dlink, was the HG659's 5.8 wifi completely turned off ?

 

 

 

 

 

 




19 posts

Geek


  #2500228 7-Jun-2020 21:40
Send private message quote this post

1101:

 

5.8GHz  is used for much more than just wifi.
So you will never see all devices using 5.8 on a PC/ph scanning software. That will only show wifi use, not other things using 5.8

 

You could still have interference issues with 5.8 , even though your PC/ph scans cant detect it. You'd need some Pro equipment to do proper scans of 2.4 & 5.8

 

Anyone in the house or nearby with RC gear, FPV , camera drones , video senders ,wireless cams , various boosters or range extenders (wifi or video)
Could even be a neighbor running illegal power levels , or something badly designed swamping 5.8
not at all common but can happen . Ive only seen that once in may years , neighbor would turn on something and swamp wifi freq :-)

 

When you connected up the Dlink, was the HG659's 5.8 wifi completely turned off ?

 

 

I suspect you might be on to something. I've noticed that it has been happening in bursts (at least recently), but that with the changes it seems less common now when in the same room as the router. When a bit further from the router it will suddenly hit a "problem spot" where it drops connection and keeps attempting to reconnect for 30 sec - 2 mins, then returns to full signal and runs like normal. This seems to fit with your comments about a neighbour having picked up a new hobby that interferes with the 5Ghz Wifi.

 

Since the changes seem to have improved performance when within 4 metres, I'll try switching back to the HG659 since it has a stronger radio and see if that plus the changes gives a further improvement.

 

p.s. a 2.4 GHz vs 5 GHz speed test is currently showing the 2.4GHz being 3 times faster when about 6-7m down the hall in a location where the 5GHz used to provide the better speeds.


 
 
 
 




19 posts

Geek


  #2507805 18-Jun-2020 23:39
Send private message quote this post

snnet, Gordy7, 1101 - Thank you for your help, it seems to have solved my problem. No more disconnects.

 

Summary for anyone else having this issue in the future: Router A was having disconnect issues on the 5 GHz network but the 2.4 GHz network was fine, and replacing it with router B from the spares cupboard didn't stop the disconnects. The disconnects happened intermittently and are possibly caused by something that isn't a wifi router interfering with the higher end of the 5 GHz spectrum used by our routers. Following the advice above and manually setting the 5 GHz channel to a lower one on router B seemed to reduce the disconnects but not stop them completely. I switched back to router A and tried the same steps, and since router A has a stronger signal it now seems to work with no issue.

 

The PDF linked by snnet has the details needed.


16226 posts

Uber Geek

Trusted
Subscriber

  #2507817 19-Jun-2020 06:33
Send private message quote this post

I have my Fritzbox 7590 on channel 48 which is relatively low, and I'm still noticing it drops occasionally. I don't know if the problem is the router or my Moto G8 plus.


Filter this topic showing only the reply marked as answer Create new topic




News »

Freeview On Demand app launches on Sony Android TVs
Posted 6-Aug-2020 13:35


UFB hits more than one million connections
Posted 6-Aug-2020 09:42


D-Link A/NZ extends COVR Wi-Fi EasyMesh System series with new three-pack
Posted 4-Aug-2020 15:01


New Zealand software Rfider tracks coffee from Colombia all the way to New Zealand businesses
Posted 3-Aug-2020 10:35


Logitech G launches Pro X Wireless gaming headset
Posted 3-Aug-2020 10:21


Sony Alpha 7S III provides supreme imaging performance
Posted 3-Aug-2020 10:11


Sony introduces first CFexpress Type A memory card
Posted 3-Aug-2020 10:05


Marsello acquires Goody consolidating online and in-store marketing position
Posted 30-Jul-2020 16:26


Fonterra first major customer for Microsoft's New Zealand datacentre
Posted 30-Jul-2020 08:07


Everything we learnt at the IBM Cloud Forum 2020
Posted 29-Jul-2020 14:45


Dropbox launches native HelloSign workflow and data residency in Australia
Posted 29-Jul-2020 12:48


Spark launches 5G in Palmerston North
Posted 29-Jul-2020 09:50


Lenovo brings speed and smarter features to new 5G mobile gaming phone
Posted 28-Jul-2020 22:00


Withings raises $60 million to enable bridge between patients and healthcare
Posted 28-Jul-2020 21:51


QNAP integrates Catalyst Cloud Object Storage into Hybrid Backup solution
Posted 28-Jul-2020 21:40



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.


Support Geekzone »

Our community of supporters help make Geekzone possible. Click the button below to join them.

Support Geezone on PressPatron



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.