We help IT Professionals succeed at work.
Get Started

Internet Cable modem only speeds good, they slow when a router is in place

Last Modified: 2012-05-12
A residential client I have has found (in Lower Alabama) when using only the Mediacom modem to the his PC with an dynamic WAN IP the speeds are as they should be. When he places a router/firewall on the LAN side everything slows way down. He should have 11 MB down 1.5 MB up. With the router in place he is getting about 2.15 MB down and .009 - .51 MB up.

We have tried two different routers, both lower end. The first thing I did was have him purchase a Ethernet only router and branch the wireless router from there. No difference. I use COX and I had some issues but when I replaced the DOCSIS 1.0 modem issued by COX with a DOCSIS 2.0 - everything worked fine. But my troubles were only getting 10 -11 MB down instead of 28 MB down. Upstream was OK. Now I run as advertised by COX..
Watch Question
This problem has been solved!
Unlock 1 Answer and 5 Comments.
See Answer
Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

  • Troubleshooting
  • Research
  • Professional Opinions
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE