CGN3AC 100U Router keeps losing the wireless connection

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I Plan to Stick Around
Posts: 40

Re: CGN3AC U100 Router keeps losing the wireless connection

I don't have a volt meter but I tried it on a few direct wall outlets with the same results. I also tried just wireless devices only and it still did not fix that issue.

Is it better to keep both the 2.4 and 5 ssids the same? Can you merge them and if so would devices be able to determine the better one to connect to?
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Posts: 1,900

Re: CGN3AC U100 Router keeps losing the wireless connection

Hello @j2pc ,

 

I believe I may have understood the issue; you have CGN3AC in bridge mode and using your own router, which is perfect. Lot of us in our community have the similar setup. However, the complication seems to be, I’ve to speculate here; you are using more than one Ethernet port at CGN3AC? Is this correct?

 

There is some confusion here, when you talk about bridge, Dlink router and Rogers’ 2.4 and 5GHz SSIDs? Sorry, I'm jumping in little late in this ongoing thread.

 

When Rogers’ gateway modem (CGN3AC etc.) is in bridge mode, ONLY one Ethernet port can be used. Ideally, you would connect your personal router to it. And for additional wired connections you have to use the Ethernet ports available at the router.

 

The solution, assuming 2 Ethernet ports are being used at CGN3AC and it’s in bridge mode;

 

  • Only keep the Ethernet cable connecting to your router(it should be connected to Internet/WAN port at the router)
  • Connect the other Ethernet cable to the LAN port of your router
  • Power cycle both modem and router. Power up modem first, wait until from top down the first four lights are solid and then power up your router. It should take like a minute or so and you should have a stable Wi-Fi network from here on

As for keeping both 2.4 and 5GHz SSIDs same name, not possible. Router needs to differentiate the SSIDs for proper routing.

 

Let us know if the solution worked for you, thank you for your patienceSmiley Happy

 

Thanks,

RogersMoin

Resident Expert
Resident Expert
Posts: 7,078

Re: CGN3AC U100 Router keeps losing the wireless connection

The SSIDs should be distinct so that you, and the device can tell which network is which.  That has come up in previous postings, where the user device doesn't have the capability to determine which network is the best to use at any given time, so the user thinks for example that the 5 Ghz network is in use, when in fact the 2.4 Ghz network is actually in use.  It causes a great deal of confusion when you are troubleshooting, trying to determine what the problem is.  So, keeping them distinct from each other helps.

 

One last item I would like you to try is to have the modem in use, with both wireless networks up and running, and then uplug the RG-6 cable from the modem.  Yes, you will lose the internet connection, but my question is whether or not the modem wireless transmitters keep running.  So, at this point the only thing connected is the power supply.  If the modem and wireless transmitters keeps running, great.  If the wireless dies, exchange it once again.  Normally I wouldn't buy off on the arguement that you could get three bad modems in a row, but you can't discount the theory of a bad manufacturing run than just happened to ship to your area.  With just the power supply connected I can't see any other logical reason for the wireless to stop working.  Try logging into the modem through the wireless connection just to make sure that the modem is still operating as it should. 

 

Are you anywhere near an airport?  There are provisions in the 802.11 spec to shut down the wireless for midrange 5 Ghz channels which you can't access in order to limit any interference with airport weather radar systems.  That should not affect anyone given the channels in question, but, there have been firmware bugs in the Hitron modems before, so, just wondering.

 

It would help at this point if you could load inSSIDer onto a laptop, and take a screenshot when the wireless is up and running and when it shuts down, and post them somewhere so that I can have a look at them.  

 

Can you also log into the modem, navigate to the STATUS....DOCSIS WAN page, copy the downstream and upstream tables and paste them into this thread.  Don't worry about how they look when they paste in.  I'll clean them up when I look at them.

 

What is it that Winston Churchill once said, "We shall never surrender".  Don't give up hope yet 🙂



I'm an Advisor
Posts: 931

Re: CGN3AC U100 Router keeps losing the wireless connection


@j2pc wrote:



Is it better to keep both the 2.4 and 5 ssids the same? Can you merge them and if so would devices be able to determine the better one to connect to?

Home-grade equipment doesn't seem to handle using the same SSID for 2.4GHz and 5GHz very well...

 

'Serious' institutional equipment seems to handle it more or less fine.

I Plan to Stick Around
Posts: 40

Re: CGN3AC U100 Router keeps losing the wireless connection

That 2.4 and 5 ghz question was not related to dlink but to the dual band rocket speed gateway. I was just curious but that is fine, I don't mind at all to keep 2 separate.

 

If you forget about the bridged mode, and just talk about the CGN3AC it seems to have trouble running either 2.4Ghz or 5Ghz wireless network (It just seems to stop working within a day of being connected and then would require a reset).

 

Before the CGN3AC gateway I used to have the previous Rogers gateway that was just single band Wireless N. It had no issues with my exact same setup. Since this one is giving me trouble I was forced to put it in bridged with my outdated personal router which is single band 2.4GHz and only capable of wireless N. The bridged mode with DLink gives me no problems but can't keep up with the speed/range etc.

 

So all I did was change my old gateway with this CGN3AC model and I have tried so many different things, even called in the Rogers technician and it still didn't work. So what are my options, am I forced to spend more money to get an upgraded router? Is there a specialist who is familar with this particular device who can take a look at the issue?

I'm an Advisor
Posts: 931

Re: CGN3AC U100 Router keeps losing the wireless connection


@j2pc wrote:

Before the CGN3AC gateway I used to have the previous Rogers gateway that was just single band Wireless N. It had no issues with my exact same setup. Since this one is giving me trouble I was forced to put it in bridged with my outdated personal router which is single band 2.4GHz and only capable of wireless N. The bridged mode with DLink gives me no problems but can't keep up with the speed/range etc.

 

So all I did was change my old gateway with this CGN3AC model and I have tried so many different things, even called in the Rogers technician and it still didn't work. So what are my options, am I forced to spend more money to get an upgraded router? Is there a specialist who is familar with this particular device who can take a look at the issue?


My advice would be to spend big $$$$ and get an Asus RT-AC68U. 🙂 Amazing router with outstanding wireless performance and software quality. 

 

But it's up to you how much time you want to put into trying to troubleshoot this CGN3AC thing. What did you have before? Cisco DPC3825?

I Plan to Stick Around
Posts: 40

Re: CGN3AC U100 Router keeps losing the wireless connection

My last one was the CGN2. And I think before that was the cisco one. I'm a long timer Rogers user.

 

Believe it or not that is the Asus AC68U is the one I was considering on getting.

I'm an Advisor
Posts: 931

Re: CGN3AC U100 Router keeps losing the wireless connection


@j2pc wrote:

My last one was the CGN2. And I think before that was the cisco one. I'm a long timer Rogers user.

 

Believe it or not that is the Asus AC68U is the one I was considering on getting.


If you managed to use the CGN2 in gateway mode, then colour me impressed. Tried running it in gateway mode at my parents' and after about a week of horrible signal strength (they live in a concrete condo building...) it got bridged and their old Linksys came back out of the closet, to be later replaced with ... an RT-AC68U 🙂

 

I don't think anyone here who has bought the AC68U regrets the purchase (Datalink, jimboden, etc?). It's expensive, especially in an era where you can buy an absurdly awful Windows laptop for close to that price, but like a lot of things in life, you get what you pay for... 

I Plan to Stick Around
Posts: 40

Re: CGN3AC U100 Router keeps losing the wireless connection

The CGN2 I didn't use bridge mode because my DLink felt too old, but at least I could use an all in one device which would work.

 

But my hands are pretty much tied right now. I think I will wait until I can at least get it on sale...its a lot cheaper in the US but Amazon US won't ship most routers to Canada.

I Plan to Stick Around
Posts: 91

Re: CGN3AC U100 Router keeps losing the wireless connection

I am also having a similar problem.  but only with 5ghz.  its happened about 3 times where the 5ghz option just goes missing. I am using the router in gateway modem.  Haven't saved up enough nickels to spring for a new router.