Improve company productivity with a Business Account.Sign Up

x
  • Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 337
  • Last Modified:

Splitting network with a router

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
enigmaedge
Asked:
enigmaedge
  • 10
  • 2
1 Solution
 
Yan_westCommented:
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
 
Yan_westCommented:
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
 
Yan_westCommented:
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
The 14th Annual Expert Award Winners

The results are in! Meet the top members of our 2017 Expert Awards. Congratulations to all who qualified!

 
Yan_westCommented:
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
 
enigmaedgeAuthor Commented:
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
 
Yan_westCommented:
Why do you need a external IP on second switch?
0
 
Yan_westCommented:
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
 
Yan_westCommented:
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
 
enigmaedgeAuthor Commented:
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
 
Yan_westCommented:
Oh, in the drawing, the second switch is connected to the 1st one, not the firewall.
0
 
Yan_westCommented:
you can't do that with that equipment, you can't put a Broadband router in a network behind another broadband router.
0
 
Yan_westCommented:
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
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Featured Post

Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

  • 10
  • 2
Tackle projects and never again get stuck behind a technical roadblock.
Join Now