Uverse 2Wire3801 HGV to 2Wire 1701 HG

January 25, 2011 at 22:39:01
Specs: Windows 7 Ultimate, AMD X2 250/4GB
How can I connect and configure a new AT&T Uverse 2Wire 3801HGV gateway with an older 2wire 1701HG gateway as a router to add more IP addresses in a home network? The 3801 currently feeds a wired lan through three 16 and 8 port switches, and feeds way too many wireless users too. Plus, the 3801 also feeds the VOIP phone system and TV (non HD). I now know the 3801 has a max of 10 or 12 IP addresses that it can handle (where was that little detail in the AT&T material?). The 1701 can and has fed more than 50 wireless and wired connections easily for years. So, what needs to be done make the 1701 feed the wired and wireless lan from the 3801 gateway, as well as let the 3801 continue to feed the VOIP, TV, and some of the wireless lan needs at the same time? Thanks from a Dad with too many girls.

See More: Uverse 2Wire3801 HGV to 2Wire 1701 HG

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January 26, 2011 at 07:49:18
For information on how to add a second router to your LAN, click on my name above in my response and read my "how-to" guide titled, "Add a second Router to your LAN"

You'll want to use the "LAN port to LAN port" (version 1) scenario for connecting, and configuring the routers. This should allow you to still run the VoIP and TV from the 3801 router.

to add more IP addresses in a home network

I'm not sure what you mean by this. I think you mean, add more available ports to plug more network devices in. If that is what you mean, your second router likely has 4 LAN ports giving you a total of 6 free (keep in mind, you will be using one LAN port on each router to connect them). If you need more than 6, it would be worth your while to buy an inexpensive switch that has enough ports to do the job. You would connect it to a LAN port too.

If you need more addresses, then you just need to adjust the DHCP scope on your router. Most every router I've used by default uses .100 to .199 (199 available addresses) in it's scope.

existing DHCP Scope = to

You can adjust that by logging into the router's management interface and changing the scope to add as many more addresses as you need up to a grand total of about 250

new DHCP Scope = to

It is not only, not necessary to run DHCP on both routers, it's a lot better, and simpler if you don't. You shouldn't need more than 250 addresses which gives you.

Keep in mind that static IP's (like the ones you'll use on the LAN side of your routers) need to be outside the DHCP scope.

It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.

***William Henley***

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January 29, 2011 at 16:53:04
Thank you for the start on solving the challenge. IP addresses are the issue, not wan ports. If the 3801 can be configured for more IP addresses, the issue goes away. Will get back to you as this progresses. Thanks.

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January 29, 2011 at 17:05:18
The 3801 stats say there are 174 remaining unallocated IP addresses. So now I will wait to see if the connection hungry crowd (my girls) get dropped connections or no connections as happened previously. If the prior condition occurs another time, it's time to go back to your very helpful site and dig deeper. Again, thanks for the help.

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