Networking Router with QoS and Comcast Gateway Modem

Question

We got comcast to come out and setup our Business Class internet service and currently right now I am stuck because I am loosing around "10mb" on a speed test at speedtest.com when I have the router/switch connected to the Comcast Gateway Modem.

I know that this should be a question for Comcast, but lets face it, they are idiots.

Let me first explain everything I have tried doing and hopefully it will help someone point out my issue.

Router = Linksys 10/100 Router 8 port Switch Comcast Modem = Comcast Business Class Business IP Gateway

Try 1) Computer through Comcast Modem - speedtest.com = 52mb down, 11mb up.

Try 2) Computer through Router, Router connected to Comcast Modem (Through WAN) = 40mb down, 11mb up

Try 3) Computer through Router, Router connected to Comcast (Through WAN using Crossover cable) = 40mb down, 11mb up

Try 4) Computer through Router, Router DHCP Disabled, Router connected to Comcast (Through WAN using Crossover RJ45) = 40mb down, 11mb up

Try 5) Computer through Router, Comcast Gateway DHCP Disabled, Router connected to Comcast (Through WAN using Crossover RJ45) = 40mb down, 11mb up

Try 6) Computer through Router, Router DHCP Disabled, Router connected to Comcast (Through LAN, not WAN making Router just act like a Switch) = 50mb down, 11mb up

Even though Try 6 works, I need to still be able to QoS the connections. Since the Router is now acting as a Switch, it won't let me QoS the Router Ports anymore. Comcast Gateway Router doesn't allow QoS.

Anyone know how I can setup this network and still keep my speed at the 50mb down/11mb up with QoS?

Answer 1

I found the answer.

Solution:

Unplug power to both Comcast and Linksys Router

• Connect Computer to Router

• Router Configuration - Obtain IP AUtomatically, Disable DHCP, Set IP of Router IP within range of the Comcast Gateway (For my settings, Comcast Default was 10.1.10.1, so I set Router to 10.1.10.99), and set DNS to Comcast's Gateway IP (in this case, 10.1.10.1)

• Connect Comcast Modem to Router using a standard RJ-45 Ethernet Cable to Port 1 on the Linksys Router. NOT the standard Internet port (WAN)

Turn on Comcast Modem (waited 15seconds to be safe) Plugin in Linksys Router (waited 15seconds before trying internet)

tried opening the new Linksys Router IP#: 10.1.10.99 in web browser and IT WORKED!

Great nightmare fixed, got 53mb down, 11mb up still at max speed, and I can still access the Linksys Router Setup, and still enable QoS to all ports on the Linksys Router.