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02.11.2008 at 08:22AM PST, ID: 23153394
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connecting two routers - Comcast cable modem connected (cascade) into router which then connected to another router

Asked by rcheney in DSL Lines / Cable Internet, Network Routers, Windows XP Operating System

Tags: Comcast, cable modem and generic router from other manufacturer, new cable modem

I have a new Comcast cable modem connected to the Internet port of a generic router, I have two PCs cabled from the lan ports of this first router and from another lan port on the first router I am running a cable to a second router which will have two PCs cabled to it.
1) should I connect the cable to the lan port or internet port of second router ?
2) should I change the DHCP setup for either of the routers?
3) should I change the working mode, ie Router, Gateway, etc, on either router?
4) should any or all of the PCs be set to - obtain IP address dynamically, or should any or all have fixed IP addresses?  Three of the four PCs are Windows XP and one is Vista.
I have tried several ways of connecting the routers and changing various settings and I can get everything to work fine for a few minutes and then the two PCs connected to the second router always get disconnected, even if they are just sitting idle.  The PCs connected to the first router are always fine and ONE PC connected to the second router is always fine, the problem starts when I connect a second PC to the second router.  This seems like an IP address conflict, are the dynamic IP addresses handed out by the cable modem?  or the first router?  I am look for the correct way to do this instead of trying this and that and experimenting, I have run out of time and need to know the correct way to set this up.Start Free Trial
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example of cabling layout
example of cabling layout
 
[+][-]02.11.2008 at 08:40AM PST, ID: 20867729

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[+][-]02.11.2008 at 08:42AM PST, ID: 20867743

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About this solution

Zones: DSL Lines / Cable Internet, Network Routers, Windows XP Operating System
Tags: Comcast, cable modem and generic router from other manufacturer, new cable modem
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Solution Provided By: donjohnston
Participating Experts: 4
Solution Grade: A
 
 
[+][-]02.11.2008 at 08:43AM PST, ID: 20867747

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[+][-]02.11.2008 at 08:44AM PST, ID: 20867753

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[+][-]02.11.2008 at 08:48AM PST, ID: 20867784

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[+][-]02.11.2008 at 08:48AM PST, ID: 20867785

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[+][-]02.11.2008 at 10:50AM PST, ID: 20868989

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[+][-]02.11.2008 at 01:13PM PST, ID: 20870287

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[+][-]02.11.2008 at 09:15PM PST, ID: 20872655

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[+][-]02.11.2008 at 10:46PM PST, ID: 20872887

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[+][-]02.12.2008 at 07:48AM PST, ID: 20875811

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[+][-]02.12.2008 at 09:26AM PST, ID: 20876851

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[+][-]02.12.2008 at 11:05AM PST, ID: 20877648

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[+][-]02.12.2008 at 02:35PM PST, ID: 20879945

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[+][-]02.12.2008 at 02:36PM PST, ID: 20879955

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