Solved

Splitting network with a router

Posted on 2004-08-13
14
291 Views
Last Modified: 2013-12-19
Hey guys... Not sure if this topic should be here or in the Microsoft Network channel, but I'll give this a try anyway!

First off, some of the things I did may seem silly, but I'm working on a tight budget for the small shop here.

Ok, I have Comcast as the broadband provider here.  They gave us a SMC8013WG (without the built-in wireless adapter).  Basically, its a Cable Modem + Router + Wireless Access point (but again, adapter wasn't part of deal).  It comes with the CATV and 4 ports available in the back.  Now, for a time, we were able to utilize the 4 ports with no problem.  But now, my boss has requested one more computer and one laptop.  Now we're short on ports.  I decided to add a LINKSYS Wireless Router with 4 port switch (WRT54G) instead of the optional adapter card to the SMC router because  I would get a couple more ports (4 more) and Wireless capability.

But my problem is that any computer behind the second router can not be pinged or seen on the local network (share files, printers, etc.)

To make it easier, here's what my network looks like.

                                                                               --> 192.168.1.2,
                                                                              |     192.168.1.3,
                                                                              |     192.168.1.4 (3 ports)
                                                                              |
--- Cable ---> SMC8013WG x.x.x.x ---- 192.168.1.1 ---|
                                                                              |
                                                                              --> 192.168.1.5 LINKSYS WRT54G (4th port)
                                                                                                            |
                                                                                                   192.168.2.1    
                                                                                                            |
                                                                                        ________________________
                                                                                       |                                         |
                                                                            192.168.2.2                              Wireless
                                                                    (Other 3 ports empty)                           Stuff

Sorry for the big ASCII art, but I want to make it as clear as possible. You may have to maximize your browser or increase your resolution to see it correctly.

Is there any way I can make these 2 routers configured properly so all computers attached can see each other (without port forwarding/redirecting)?  Do I have to correcly subnet my network for it to work?  

If any more info is needed, just let me know.

Thanks in advance!

0
Comment
Question by:enigmaedge
  • 10
  • 2
14 Comments
 
LVL 15

Expert Comment

by:Yan_west
ID: 11795669
Hmm, is what kind of Cat 5 cable did you use to plug the 2 switches? You need a Cross over cable, not a straight one..

http://www.duxcw.com/digest/Howto/network/cable/cable5.htm
0
 
LVL 15

Expert Comment

by:Yan_west
ID: 11795682
you must also put everyone in the same subnet.. putting a wireless router there is not good, this router is made to share internet access.. you need a standard normal switch.
0
 
LVL 15

Expert Comment

by:Yan_west
ID: 11795694
this is what what you need, if you wanna stay in linksys.
http://www.linksys.com/products/product.asp?grid=34&scid=31&prid=149
0
Windows Server 2016: All you need to know

Learn about Hyper-V features that increase functionality and usability of Microsoft Windows Server 2016. Also, throughout this eBook, you’ll find some basic PowerShell examples that will help you leverage the scripts in your environments!

 
LVL 15

Expert Comment

by:Yan_west
ID: 11795709
your network is supposed to look like this:



                          ---Comp1
Internet------SMC ---Comp2..etc..                  ----Comp1
                          -------------------------Switch----Comp2etc..

everyone one the 192.168.1.0 network
0
 

Author Comment

by:enigmaedge
ID: 11795760
well, I was hoping the LINKSYS WRT54g would have something that would allow me to switch it from Router to Switch mode.


Yan_west,

I can not put everything on the same subnet, as I have to assign an internal ip and external IP for the second router (where you have labeled Switch).

0
 
LVL 15

Expert Comment

by:Yan_west
ID: 11795786
Why do you need a external IP on second switch?
0
 
LVL 15

Expert Comment

by:Yan_west
ID: 11796212
Usually, if you want 2 external IP you put one on an external interface of a firewall, and tell the firewall that when it receive a request for the second one, foward it to the correct internal IP.
0
 
LVL 15

Expert Comment

by:Yan_west
ID: 11796263
So..


Internet ---(external ip1)Firewall----Switch-----Pcs
                                   |
                                 Switch-----Pcs (let's say 192.168.1.5 wich is a web server), and is associated to external ip 2 in the firewall)
                                    |
                                 Wireless Access point
                                      /\
                                     Wireless clients

So when you receive a request for external IP 2, you firewall check his ip table, if if it correspond, foward the traffic to the 192.168.1.5 on port 80.

that is what your network should look like. It's the only way to go. With your current evironment. even then, it's not that secure, you should put the web server
in a different network, (DMZ) isolated on another interface of your 1st firewall.. This is pretty complicated for a basic network tho.. If you want to configure something
like this, I would ask a professional to come and analyze your network. If you don't have anyone with the qualification to do it, ask a consultant, you'll save yourself alot of trouble later.

0
 

Author Comment

by:enigmaedge
ID: 11796271
well, the second switch isn't a switch.  Its a LinkSYS WRT54G Router (wireless + 4 ports).  In the settings you have to assign a local and external IP
0
 
LVL 15

Expert Comment

by:Yan_west
ID: 11796272
Oh, in the drawing, the second switch is connected to the 1st one, not the firewall.
0
 
LVL 15

Expert Comment

by:Yan_west
ID: 11796280
you can't do that with that equipment, you can't put a Broadband router in a network behind another broadband router.
0
 
LVL 15

Accepted Solution

by:
Yan_west earned 250 total points
ID: 11796369
Trust me, to do what you want to do, you need

1 Firewall
2 Ethernet switches, (or 1 that is bigger)
1 Wireless Access point.

2 broadband router *wont* work.
0

Featured Post

Efficient way to get backups off site to Azure

This user guide provides instructions on how to deploy and configure both a StoneFly Scale Out NAS Enterprise Cloud Drive virtual machine and Veeam Cloud Connect in the Microsoft Azure Cloud.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Enterprise networks where VoIP phones have been deployed frequently use port configurations that allow both a computer and an IP phone to be plugged into the same switch port but use different VLANs. On Cisco equipment I'm referring to the "native V…
Trying to figure out group policy inheritance and which settings apply where can be a chore.  Here's a very simple summary I've written which might help.  Keep in mind, this is just a high-level conceptual overview where I try to avoid getting bogge…
This Micro Tutorial will give you a basic overview how to record your screen with Microsoft Expression Encoder. This program is still free and open for the public to download. This will be demonstrated using Microsoft Expression Encoder 4.
This video shows how to use Hyena, from SystemTools Software, to bulk import 100 user accounts from an external text file. View in 1080p for best video quality.

786 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question