Go Back   Tech Support Forum > Networking Forum > Modems/Cable/DSL/Satellite

User Tag List

Modem to router connection extremely slow

This is a discussion on Modem to router connection extremely slow within the Modems/Cable/DSL/Satellite forums, part of the Tech Support Forum category. Let me explain what has happened for the past 5 days. I was off of work for 1 day and

Closed Thread
Thread Tools Search this Thread
Old 10-25-2018, 06:23 PM   #1
Registered Member
Join Date: Feb 2009
Location: Albuquerque, NM
Posts: 89
OS: Windows 10


Let me explain what has happened for the past 5 days.

I was off of work for 1 day and everything was fine. I went to work the following day.

I came home after work and it was raining. No thunder, no lightning. Just straight up raining. I turned on my new computer and I tried to access the internet. It said I was OFFLINE. But my modem and router had all the correct blinking lights. But no internet connection.

So before we begin I have the following:

PC Build: AMD 2700X, 550W PSU, RX580 GPU, Aorus Gaming 7 Wifi MOBO, 1TB HDD, 250GB SDD, and 250 GB M.2 Drive.

Total power consumption? 270W. Sometimes peaks at 302 W. (NOT connected to power surge protector.)

Power surge protector. Has my PS4, monitor, and both router and modem connected to it.

The modem I had is a Motorolla SB6141. But I bought a new Netgear CM5500.

The router I was using had been a Linksys EA3500. But I bought a brand new Linksys AC1900.

After several attempts at power cycling both my modem (SB6141) and my router (EA3500) it still would not connect to the internet.

Finally I decided to keep them both off and even factory reset the router. After I unplugged both and let the modem turn on first, connect, and stay solid I connected my router and plugged it back in. it finally connected.... But the speed of my internet now suffers greatly. I get on average an unstable 0.5Mbps to 1.5 Mbps.

Yesterday I got mad because a large update needed to be downloaded for my games and I decided to see if plugging my PS4 directly into the modem would work and VIOLAH. 5Mbps!

I said "Wow it is actually working!"

So I thought maybe it is just my Router that is suffering... Or maybe it finally died on me. After all this EA3500 is at least 10 years old.

When I attempted to access my Modem page through my router? It could not even bring up the page.

During this time a thunder storm did happen. But only this day, not the day previous.

So I went out and bought the AC1900.

I plugged it in and had everything set up and when it was finally go time:

1.5Mbps.... to 0.2Mbps... Unstable as F.

And I could not connect to my Modem page through the router at all.

I checked the modem status and everything was fine after directly connecting to it on my PC. All 8 channels were connected at expected strengths and all uploads were properly working. But then I switched back to the router connection and the problem persisted.

I even used the brand new network cables that came with the router. I even switched out the cables to my PC and my PS4. It is not the router, it is not the wires, it is not my PC or my PS4. It is the modem to the router.

What I believe happened is something happened inside of my Modem that caused it to just completely die. At least when connected to the router.

Upon calling my ISP I decided to plug in that new CM500. And I found out that an internet outage happened overnight. And it was due to power issues.

Right now I can actually access my modem page properly. I can actually watch netflix now through the router. And my PS4? it gets a strange .5 Mbps connection. but when I test the internet connection it tells me 4.7mbps (And yes I have QOS set up to 4444Mbps for my PS4 and my PC) However it still only gets me .55Mbps... When before it would give me the correct 4.7mbps.

Now I have port forwarding correctly in place on my router for all services on PSN and my games. And I have DMZ hosting set to my PC not the PS4. I tried switching them back and forth and powercycling my modem and router to see if it would speed things up but no.

For what ever reason my PS4 gets .5Mbps downloading anything. my PC is fine at 4.7 Mbps. And no I am not downlkoading or watching netflix at the same time as using my PS4 for gaming. Also one drive is disabled on my computer.

So I have no idea what happened but I do believe my SB6141 died at least a little bit inside. And now I have a new router modem combo.

So my question is... what happened? Why would the router not connect to the modem properly? Capacitor busted? Wires overheated? Is it the power surge protector? Should I get a new one? or is it something completely different? How can I stop this in the future?
The_Con-Sept is offline  
Sponsored Links
Old 10-25-2018, 06:50 PM   #2
Registered Member
Join Date: Feb 2009
Location: Albuquerque, NM
Posts: 89
OS: Windows 10

Upon checking my new modem's status page I am getting around 2.7-3.8 dbmv for downstreaming with an average of 42 SNR. upstream is around 41 dbmv.
The_Con-Sept is offline  
Old 10-25-2018, 08:14 PM   #3
Team Manager - Networking
Moderator - Hardware
JimE's Avatar
Join Date: Apr 2009
Location: St Louis, MO
Posts: 19,813
OS: Win 7 SP1

My System

If the speeds are normal when the computer is directly connected to the modem and the problem is only occurring when the router is used, then the problem is with the router.

As far as connectivity is concerned, the router will typically need to be power cycled (if already connected) or connected and then power on, after the modem is powered on. I just switched to a new Arris modem (provided by Charter), and if it is power cycled, the router will lose access. Access won't restore until the modem is online and the router is power cycled.

Speed wise, look at the port stats of the WAN port. With any newer hardware, I would expect it should be 1000/Full.

JimE is offline  
Sponsored Links
Old 10-26-2018, 05:51 PM   #4
Registered Member
Join Date: Feb 2009
Location: Albuquerque, NM
Posts: 89
OS: Windows 10

I figured it out.... When the wireless setting is enabled with media priority set at 4444.... it give me about .5 mbps... I added another 4 to it and bam. back to normal.
The_Con-Sept is offline  
Old 10-29-2018, 07:24 AM   #5
Registered Member
Join Date: Feb 2009
Location: Albuquerque, NM
Posts: 89
OS: Windows 10

One other thing you may want to try is turning off the wireless broadcast by turning both WiFi networks off from the router. Which means going into the router page and switching the WiFi to OFF on both the 2.4 and 5.0 signals. Turn them off, then wait a minute and turn them back on.

Sometimes when you reset your wireless router it sets the wifi to high priority and the wired connections to a lower priority. Try turning them off and back on.
The_Con-Sept is offline  
Closed Thread

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
Connection between your access point, router, or cable modem & internet is broken
When I turned my laptop on today I notice the internet was going slow. It seems like the net keeps going in and out. I have wireless and I keep watching the bar drop down and back up. I unplugged the the internet modem and the wireless several times. I ran a trouble shoot and it's saying Issues...
Ms.Zombie Modems/Cable/DSL/Satellite 10 05-29-2013 01:19 PM
AT&T Westell 6100 modem changing IPs over and over.
Hello,,,,, ,,,,and thanks for your time, help, and advice!!!! At my home I have a Westell 6100 DSL modem connected to a computer. AT&T is the ISP and all filters are installed. I use my home computer via VNC applications from a remote location and I began to notice that the VNC local...
jglong3 Modems/Cable/DSL/Satellite 2 04-01-2012 03:16 PM
Very slow & unstable connection with Belkin router
I've been having big problems with my Belkin router. The connection is often slow even after restarts etc. I'm not sure whether it's the line quality/broadband usage/router quality that's causing the problem. How can I pinpoint the issue? ISP: Virgin Media Broadband: ADSL Anti-Virus: AVG ...
aphex221 Networking Support 1 02-27-2012 10:37 PM
[SOLVED] A modem, wireless router, and more wired ports
My latest wireless router just died so it's time for a new one. I have a modem that has 4 ports, and I had one going to my wireless router and from the wireless router, I had 4 wired computers. <cable internet> I added 3 more computers directly to the modem for a total of 7 computers via 2...
silvergoat Networking Support 7 09-19-2011 11:01 AM
Windows 7 hangs just after startup each time
Just after startup, I can see the desktop, all icons, the system tray, etc., but if I click anything, it immediately hangs. I am eventually given an error from the bottom left corner of the screen stating that "Microsoft Windows" is not responding. I can wait and the application may respond or I...
slhaas BSOD, App Crashes And Hangs 3 08-03-2011 04:49 AM

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is on
Smilies are on
[IMG] code is on
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Post a Question

» Site Navigation
 > FAQ
Powered by vBadvanced CMPS v3.2.3

All times are GMT -7. The time now is 05:55 PM.

Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Copyright 2001 - 2018, Tech Support Forum

Windows 10 - Windows 7 - Windows XP - Windows Vista - Trojan Removal - Spyware Removal - Virus Removal - Networking - Security - Top Web Hosts