Helping people with computers... one answer at a time.

I have a high speed internet via a cable modem. I received 2 ip addresses from my provider. Can I use 2 different routers: Linksys and Watchguard Firefox Soho, and still have dhcp enabled on both?

Well, you certainly can, but in most cases it only makes things more complicated than they need to be.

To actually do it, I'd put a hub in front of the two routers. So your cable modem would go into the hub, each router would be connected to the hub, and each would configured to respond to one of your two static IPs. You could then connect your computers to one router or the other, as you saw fit.

I'm just not sure why, in most cases, you'd want to do so.

The drawback here is that your machines on one router will not be able to share folders or printers with machines on the other router. Each router represents its own private sub-network on the internet.

Multiple internet IP addresses are really only useful if you have multiple computers that you want to access from the internet. For example you might want to set up two web servers, in which case each would need its own IP address. For most common home and small business situations, that kind of setup is actually pretty rare.

My ISP has allocated me 5 IP addresses here at home, but I use only one. All the computers in my house (8, I think) are connected behind a single router. I really don't have any need for the other 4 IP addresses at this time.

I suspect that, unless you're doing something special, you really only need one of your two IP addresses. It'll certainly be the simplest approach.

Article C2324 - April 6, 2005

Leo Leo A. Notenboom has been playing with computers since he was required to take a programming class in 1976. An 18 year career as a programmer at Microsoft soon followed. After "retiring" in 2001, Leo started Ask Leo! in 2003 as a place for answers to common computer and technical questions. More about Leo.

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Recent Comments
30 Comments

Hey. I have a couple of questions.
Like let's say, I'm currently playing Xbox Live, and I have 1 cable modem and I'm using 1 wireless router.
When my family uses the computer I start lagging on Live. If I buy a second router, would it stop this problem?

Unlikely. You're more likely limited by the speed of the internet connection to your home.
Leo
16-Feb-2010

Posted by: Kenny at February 15, 2010 10:56 PM

I have 2 networks setup and 2 IP addresses. I use one network for general home stuff and my wireless IP cameras are on the other. This way, I don't eat up the bandwidth of my home network. I access my cameras through my dyndns domain via port forwarding on my camera network. So far this has worked for me very well. This is the only reason I would do this since it is a specialized use.

Posted by: Steve at May 19, 2010 9:45 AM

INTERESTED IN IP CAMERA TO PUT AT LAKEHOUSE. WE DO NOT HAVE INTERNET THERE. OUR PRIMARY RESIDENCE IS ABOUT 50 MINUTES AWAY. 1 CAN AN IP CAMERA BE USED AT OUR LAKEHOUSE AND AND DO I GO ABOUT SETTING UP ?

Posted by: LARA at July 13, 2010 12:42 PM

Took me 2 days to figure out, thought I'd post it for others the easiest way to get two playstation's running simultaneously on a home network is to use a Switch and make sure your ISP provides you with 2 IP addresses. You'll NEED 3 IP addresses if you plan to use any other computers on the network. Use the router to separate the rest of the network from the two ps3. Use wired connections for the PS3.

Setup
MODEM
-SWITCH
--1 PS3
--2 PS3
--Router
---PC1
---PC2
---WIRELESS LAB TOP
---ETC...

This setup will guarantee your able to join parties together in seconds(no waiting time or party kicks)

You shouldn't ever be kicked out of game by connection errors. (typical problem with this game)

Which means you won't get penalized for the game's inability to support all routers properly.

(why don't games collaborate with a router company, like a certified PS3 Router)

Uncharted unlike most other games has serious problems finding players, joining parties, or disconnecting from games, after testing, configuring many routers, opening ports, static ips, dmz, firewalls, routing ips, qos engine priorities, etc. your just wasting your time! If your not experiencing problems, great! ignore this, but if you are, don't waste your time!, get the setup i mentioned above and you will be set gaming for 10 hours straight together with your brother or sister watching others get disconnected .

Spread the word! this is specifically for Uncharted 2, connect directly and you won't have a problem anymore. Hopefully Uncharted 3 will have fixed these network issues. Enjoy!

THANKS BIG TIME TO LEO FOR THIS ARTICLE THAT HELPED ME SOLVE THE PROBLEM :P

Posted by: CD at January 11, 2011 8:58 AM

I have 2 PC's and 2 IP addresses,each pc recognizes 1 IP address. I have it connected internet cable to modem,from modem to a linksys 5 port switch and from there a network cable to each pc works great. I did this because when I had 1 IP address and used a router my buddy and I would go to same online game play for a while but then get kicked, not sure if server saw us as one in the same. Anyway someone said if I got 2nd IP address and connected as above game server wouldn't kick us and it never has since. Each pc always has the same IP address they never switch back and forth.How does each pc recognize same IP address everytime you boot them ?

Posted by: Lon at April 28, 2011 3:09 PM
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