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hooking multiple routers together through one modem

Posted on 7/24/14 at 4:55 pm
Posted by lsu777
Lake Charles
Member since Jan 2004
30949 posts
Posted on 7/24/14 at 4:55 pm
Looking for some advice here.... I have a linksys e1000 coming off my cable modem and I ran cat 6 to a linksys e1200 in my living room and to another in my bedroom.

The plan was to run everything through the e1000. I hooked the e1200 to the connections 1 & 2 on th3 e1000 and set the ip address for the two e1200s at 192.168.1.2 and 192.168.1.3 and turned off dhcp on both. I also place them on channels 1&11. I left dchp on for the e1000 and set the channel to 6.

I set the ssid & password on all three to the same thing. From everything i had researched this was the way to do this but I can not get it to work.

anybody got any advice?

when I get home I will try cascading them like this as linksys suggest. If that don't work I give up unless somebody else knows.


:wah:
Posted by tigabait01
Baton Rouge
Member since Aug 2004
4734 posts
Posted on 7/24/14 at 5:08 pm to
Make sure the security is the same on all routers.
Posted by Hawkeye95
Member since Dec 2013
20293 posts
Posted on 7/24/14 at 5:11 pm to
what is your goal here?

I would suggest not wiring and just set one up as a repeater.
Posted by Hopeful Doc
Member since Sep 2010
14938 posts
Posted on 7/24/14 at 5:19 pm to
quote:

set the ip address for the two e1200s at 192.168.1.2 and 192.168.1.3 and turned off dhcp on both. I also place them on channels 1&11. I left dchp on for the e1000 and set the channel to 6.



What's your DHCP scope on the e1000?


ETA: Also, are you plugging into the WAN or LAN on the switches?
This post was edited on 7/24/14 at 5:20 pm
Posted by Hopeful Doc
Member since Sep 2010
14938 posts
Posted on 7/24/14 at 5:20 pm to
quote:

I would suggest not wiring and just set one up as a repeater.



That cuts throughput in half and is generally less reliable than what he's doing. His idea will be more effective once it's setup. It's usually quite easy to do. He has a tiny troubleshooting step to go.
Posted by Korkstand
Member since Nov 2003
28697 posts
Posted on 7/24/14 at 5:32 pm to
quote:

That cuts throughput in half and is generally less reliable than what he's doing
Not to mention he would have to install aftermarket firmware to enable repeater mode.
Posted by lsu777
Lake Charles
Member since Jan 2004
30949 posts
Posted on 7/24/14 at 5:39 pm to
I will check the scope when I get home, and I have it running lan ports 1&2 to the wan(internet) ports on the two e1200. I will check the security and firewall when I get home also.

And yes I am cascading because its a much better way then using a repeater.
Posted by Hopeful Doc
Member since Sep 2010
14938 posts
Posted on 7/24/14 at 5:42 pm to
quote:

wan(internet) ports on the two e1200.


Move these to the LAN ports. Should work immediately after that.


ETA: Alternatively, you need to set your 3rd number in your IP address to something other than .1 (so 192.168.2.1 instead of 192.168.1.2. If you're trying to do it this way (in the WAN), your sub-routers need to have DHCP enabled. The first option is easier and I have used it before. I've never attempted multiple DHCP servers on different subnets. Probably would work fine, but your computers would probably have more trouble switching between them. That's just my idea, at least- never done it in practice.
This post was edited on 7/24/14 at 6:05 pm
Posted by lsu777
Lake Charles
Member since Jan 2004
30949 posts
Posted on 7/24/14 at 6:10 pm to
Why would you want dchp enabled instead of static if going through wan? I thought the point was to force the two e1200s to use the ip address the e1000 assigns?the way you are describing through wan though is what linksys said to do but I found a bunch of others that said not to. Guess I will figure it out and report back in a couple of hours.
Posted by ForeLSU
The Corner of Sanity and Madness
Member since Sep 2003
41525 posts
Posted on 7/24/14 at 6:18 pm to
quote:

The first option is easier and I have used it before. I've never attempted multiple DHCP servers on different subnets. Probably would work fine, but your computers would probably have more trouble switching between them. That's just my idea, at least- never done it in practice.


You don't really want to do this for several reasons. You're basically Double NAT'ing every internet conversation, and any "smart" devices that broadcast their presence, i.e. printer, won't travel across subnet's well (if at all). For example, if you have an Airport Express on one segment that you're using for AirPlay, clients on other segments won't see it in iTunes.

Your first piece of advice is the correct answer, just make sure the 2 remote devices are connected via one of their LAN ports to the main router's LAN ports.

Clearing up a little terminology for the OP. The devices you're using are basically 4 devices in 1. Router, firewall, network switch and wireless access point. In the 2 remote boxes, you're only using the switch and wireless portions, so you're technically not connecting multiple "routers" through the modem.
Posted by Hopeful Doc
Member since Sep 2010
14938 posts
Posted on 7/24/14 at 6:33 pm to
quote:

Why would you want dchp enabled instead of static if going through wan?


The way you ask this leads me to believe that I am misunderstanding you, or you are slightly misunderstanding what enabling DHCP on the router does (please correct me if I am wrong. I am likely misunderstanding you). On the router's firmware, when you enable DHCP, you are enabling a DHCP server, not a client. This is distinctly different from going through the TCP/IP settings on a Windows (or other OS) machine and saying "Use DHCP" as opposed to "Use (static/this) IP." There, you are enabling the client or addressing the computer manually.



It really sounds like you're kind of mixing and matching the two ways of going about this, which isn't going to work.

So I'm getting out of my comfort zone in explaining how this works, so maybe someone can correct me, but if you're going to turn DHCP off, you have created access points on the one, single network you've created (both wireless access points and the ports on the back of the router, though that's more commonly referred to as a "switch" than an access point).
When you use the WAN port (this is probably where I'll miss an minute detail but will have the general principle correct), your router thinks it's creating its own new network. If you give it a new address outside of the address scope of your original router's DHCP scope, it has no problems assigning addresses to what's underneath it and communicating back through the original router's port back to the modem. If you turn off its DHCP, it has its own network with clients trying to pull IP addresses from it that cannot (because you have turned it off). If you leave it in the scope of the first router, you'll wind up with widespread addressing conflicts and also have dysfunction.
Posted by ForeLSU
The Corner of Sanity and Madness
Member since Sep 2003
41525 posts
Posted on 7/24/14 at 6:40 pm to
quote:

Guess I will figure it out and report back in a couple of hours.


Here you go...

Main Router...
IP - 192.168.1.1
DHCP Enabled (set range to 192.168.1.100 - 199
WAN port connected to Modem

Remote #1
IP - 192.168.1.2
DCHP Disabled
LAN port 1 connected to LAN port 1 on Main Router
Nothing in WAN Port

Remote #2
IP - 192.168.1.3
DCHP Disabled
LAN port 1 connected to LAN port 2 on Main Router
Nothing in WAN Port

Wireless setups the way you posted in the OP is fine
This post was edited on 7/24/14 at 9:25 pm
Posted by Hopeful Doc
Member since Sep 2010
14938 posts
Posted on 7/24/14 at 6:43 pm to
Use the ForeLSU post above this and don't read anything else in the thread. It's stupid, worthless, and not going to do anything to help you.
Posted by ForeLSU
The Corner of Sanity and Madness
Member since Sep 2003
41525 posts
Posted on 7/24/14 at 6:48 pm to
quote:

It's stupid, worthless, and not going to do anything to help you.


Hey, you gave it the old college try.

Actually there are times when you would do setups the way you listed when you want isolation or segment traffic. But not typically in a home. Although there are some cool things you can do with VLAN's on more advanced hardware to segment traffic for home use, guest use, media streaming, voip, etc.

Check out pakedge.com. They make some killer stuff, but it's expensive.
Posted by Jimbeaux28
Baton Rouge
Member since Jun 2007
4051 posts
Posted on 7/24/14 at 8:30 pm to
quote:

ForeLSU


What he said.
Posted by lsu777
Lake Charles
Member since Jan 2004
30949 posts
Posted on 7/24/14 at 8:42 pm to
Well so far no dice but I think I am just getting out of order on the steps and getting impatient. I will give it another shot tomorrow using what yall said but the steps from linksys tech support.

I appreciate the help guys.
Posted by drizztiger
Deal With it!
Member since Mar 2007
36778 posts
Posted on 7/24/14 at 9:08 pm to
quote:

Here you go...

Main Router...
IP - 192.168.1.1
DHCP Enabled (set range to 192.168.100 - 199
WAN port connected to Modem

Remote #1
IP - 192.168.1.2
DCHP Disabled
LAN port 1 connected to LAN port 1 on Main Router
Nothing in WAN Port

Remote #2
IP - 192.168.1.3
DCHP Disabled
LAN port 1 connected to LAN port 2 on Main Router
Nothing in WAN Port

Wireless setups the way you posted in the OP is fine
Should be DHCP Enabled (set range to 192.168.1.100 - 199

But otherwise, this is the answer IMO.

If you do this, you can test by connecting to the Main Router with your PC wired. You should get an IP of 192.168.1.100 with a subnet mask of 255.255.255.0 and default gateway of 192.168.1.1

If that is the case, ping 192.168.1.2 (router 2) and ping 192.168.1.3 (router 3).

If all success, then your network is wired correctly. Unplug your PC from Main Router and go plug it into Router 3. Give it a few minutes then check your IP address, should be the same or 192.168.1.101. Still gold.

As for the wireless aspect, do as above but set Router 2 and 3 in AP MODE.
Posted by ForeLSU
The Corner of Sanity and Madness
Member since Sep 2003
41525 posts
Posted on 7/24/14 at 9:24 pm to
quote:

Should be DHCP Enabled (set range to 192.168.1.100 - 199


oops...yes
Posted by lsu777
Lake Charles
Member since Jan 2004
30949 posts
Posted on 7/24/14 at 9:59 pm to
What is ap mode?
Posted by Hopeful Doc
Member since Sep 2010
14938 posts
Posted on 7/24/14 at 10:01 pm to
quote:

ap mode


Access Point mode. It means the DHCP is off on the two secondary "routers" and they are on the same subnet as the main router and their wireless is turned on.
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