Modem overloaded with connections

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we12345

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Dec 28, 2015
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My cabled network slows down to about 300 ping whenever I have a lot of devices connecting/attempting to connect to my wifi network. I figured this out after troubleshooting it with my ISP; whenever I restarted my secondary router It would kill the internet connection to my primary modem for a good 30 seconds while it was loading up. I never had this problem until a couple months ago and i'm not sure what changed to cause this. I plan to call my ISP tomorrow to see if they can dedicate bandwidth to my PC but i've read online that most modems dont allow for it. I was wondering if anyone had any other advice on how I can solve or work around this.

To clarify about how my network is set up; I have the primary modem provided by my ISP which is connected to a secondary router used for wifi and my PC.
 
Solution
anotherdrew
Most modems provided by ISPs are really modem/routers (they do NAT, DHCP, firewall, etc). Now you are adding a 2nd router to the mix that probably is also doing NAT, DHCP, firewall, etc. Many times this works fine, but sometimes it causes problems (often weird ones). BTW, I am assuming a bit here because I know nothing about your devices and how you are using them.

I would suggest letting the modem be a modem (running it in bridge mode ... might be called something else) and using the router for all the network stuff. OR letting the router just be a wireless AP and hub while the modem does all the network stuff.

One thing ... can you define "a lot of devices connecting/attempting to connect" ... are we talking 10s, 100s, or ???
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anotherdrew

anotherdrew

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Dec 27, 2017
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Most modems provided by ISPs are really modem/routers (they do NAT, DHCP, firewall, etc). Now you are adding a 2nd router to the mix that probably is also doing NAT, DHCP, firewall, etc. Many times this works fine, but sometimes it causes problems (often weird ones). BTW, I am assuming a bit here because I know nothing about your devices and how you are using them.

I would suggest letting the modem be a modem (running it in bridge mode ... might be called something else) and using the router for all the network stuff. OR letting the router just be a wireless AP and hub while the modem does all the network stuff.

One thing ... can you define "a lot of devices connecting/attempting to connect" ... are we talking 10s, 100s, or ???
 
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Solution
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we12345

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Dec 28, 2015
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10,510


By "a lot of devices" I only mean in the 10's. We have 4 people in the house and a couple guests on the regular. It's odd because this did not happen before with the same set-up. It's just recently that it would slow down when people got home and pulled up their laptops to watch netflix or browse the internet.

I'll try your suggestion of bridging my modem (this is when my ISP shuts off the wireless features right?) and using my router as the only wireless device.
 
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anotherdrew

anotherdrew

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Dec 27, 2017
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It's more than just shutting off the wireless features. The modem would no longer do any networking stuff. It would just translate your data into a form that works with your ISP protocols (MODEM actually stands for MOdulation/DEModulation). The WAN port on your router would now use your external IP address (usually, depends on modem setup). You probably want to turn off remote administration to keep the script kiddies from trying to hack your router

If you were using both boxes for WIFI and you liked that setup, you might want to look at using your router as just an AP. Some people will use a 2 box setup like this with the same SSID/password on both boxes. Normally it works fine. Sometimes it doesn't.
 
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we12345

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Dec 28, 2015
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So i've just called my ISP and got them to bridge my modem to one port. That port is now connected to my router which I use for both my wired and wireless connections. Hopefully this'll improve my internet stability. I'll update in a couple days to see.
 
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