G3100 loses connectivity when computer sleeps

rld20211

I recently switched from 1100 to G3100 router. Ever since it was installed, i lose internet connectivity whenever my computers (desktop, dell laptop, mac book pro) goes into sleep mode. It takes about 1 min to reconnect. All computers are hard wired via ethernet. No wifi. Never happened with the 1100. I use my computers for work so when i walk away i lose my connection and need to reestablish when i wake it up.

called tech support three times--no clue. They thought i was a router issue so they sent me a replacement and of course it does the same thing. Any idea. I have already tried "unchecking" the box under network adapter that allows computer to shut off device.

My mac book pro says "seeking IP address" when it is trying to connect again so i assume that it is losing IP address every time.

Any thoughts?

Accepted answers

Cang_Household

Once you have installed the Wireshark, open the software and select the network interface you want to monitor. All this should be done without the Ethernet cable being plugged in. Then plug in your Ethernet cable between your computer and router, and wait to see what sort of packets is flowing between your computer and the router. After your computer acquires a network connection, could you save the captured traffic and send a copy to me via PM? I am going to take a look.

All comments

Cang_Household

I am confused. When you say "G3100 loses connectivity," do you mean the white circle on the G3100 turns yellow every time your computer goes to sleep? Or do you mean the computers themselves lose connectivity? If it is the latter, I would assume DHCP takes sometime to get an IP address. You can try to set static IPs on your devices to see whether the problem still persists.

rld20211

thank you very much for the reply. The latter is correct, the computers themselves lose connectivity and you are also correct that the DHCP takes sometime to get an IP address. Can you please explain how to set static IPs on my devices. i will give it a try!

Cang_Household

For setting Windows static IP, please follow these instructions: https://www.trendnet.com/press/resource-library/how-to-set-static-ip-address

For setting MacOS static IP, please follow these instructions: https://www.linksys.com/ca/support-article?articleNum=142254

On Windows machine, you might also want to set the network as Private and Trusted. I am wondering if that is also creating the issues you are having.

rld20211

thanks again for the response. I tried following the instructions in the link but when i type in my IP address and the subset, it disconnects and does not reconnect. Am i to type all 4 codes (xxx.xxx.xxx.xxx) or just the first three as it states. Also, Underneath the IP address information there are spaces for "DNS" server address? Do I enter something in these fields? It does not say to enter anything in the instructions? Perhaps i am missing a step or something? I had to revert back to automatic to reconnect. Any thoughts?

smith6612

This sounds like UPnP may be to blame. Turn off UPnP in your router and see if the disconnects continue.

rld20211

I just unchecked the "UPnP Enabled" box in the router settings. Tried and no luck. Still disconnects when sleep. Will the Wireshark tell us something?

jgc11

I'm having similar issues with my computer waking from sleep and then taking awhile to reacquire the internet connection. I noticed it also happens to my Roku tv.

All of the computer equipment was used in my old house when I was using Optimum, and did not have any problems waking from sleep in this manner. I moved to a new home a couple months ago and got FIOS installed, E3200 router. Tech support had no clue on the phone about the internet connectivity problem but tried to do what they could on their end and then sent a guy to my home to swap out both routers and it didn't make a difference. The guy who was at my home assured me he was going to contact someone he knew to help figure this out...but never followed up with me and didn't return my messages 😕 I didn't have the patience to continue from there, but hopefully some of this info helps you narrow things down. Its not just you, I do believe it has something to do with the way FIOS is configuring something on their end. Good luck 🙂

Cang_Household

@jgc1 wrote:
Its not just you, I do believe it has something to do with the way FIOS is configuring something on their end.

I don't quite follow your logic here. Verizon controls the WAN side of the network, while individual users control the LAN side of the network. These two networks are separated by the router and a change in one network would not propagate across network boundaries.

For example, having a layer 2 looping and broadcast storms in your LAN won't affect the network of your neighbors who also subscribed to Fios, but would render your network congested.

Does Windows OS now have some private physical address or some private features?

rld20211

thanks again. Glad to see i am not the only one with this issue. Unfortunately, it is not a computer operating system because receive the same issue on Window10, Windows 11 (brand new laptop) and two Mac book pros. i thought the same thing until i tried the other computers. Ti even tried a new cable vs old cables. The only variable that changed is the new G3100 router. Never had this issue with the 1100 router. Something is shutting off the LAN when it senses that there is no power or something. i am not a Tech guy so i am struggling with explaining? Seems like an energy consumption feature. Any other thoughts or is the answer to never let my computer sleep again.

pacmusicman

I haven't seen this particular problem.

As a workaround, as suggested, disable the sleep function under "Settings" in the Windows computers to see if anything changes.

[Deleted User]

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