Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

Splitting network with a router

Posted on 2004-08-13
14
Medium Priority
?
332 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
Prepare for your VMware VCP6-DCV exam.

Josh Coen and Jason Langer have prepared the latest edition of VCP study guide. Both authors have been working in the IT field for more than a decade, and both hold VMware certifications. This 163-page guide covers all 10 of the exam blueprint sections.

 
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 1000 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

Microsoft Certification Exam 74-409

Veeam® is happy to provide the Microsoft community with a study guide prepared by MVP and MCT, Orin Thomas. This guide will take you through each of the exam objectives, helping you to prepare for and pass the examination.

Question has a verified solution.

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

Nslookup is a command line driven utility supplied as part of most Windows operating systems that can reveal information related to domain names and the Internet Protocol (IP) addresses associated with them. In simple terms, it is a tool that can …
Downtime reduced, data recovered by utilizing an Experts Exchange Business Account Challenge The United States Marine Corps employs more than 200,000 active-duty Marines with operations in four continents, all requiring complex networking system…
Michael from AdRem Software explains how to view the most utilized and worst performing nodes in your network, by accessing the Top Charts view in NetCrunch network monitor (https://www.adremsoft.com/). Top Charts is a view in which you can set seve…
Is your data getting by on basic protection measures? In today’s climate of debilitating malware and ransomware—like WannaCry—that may not be enough. You need to establish more than basics, like a recovery plan that protects both data and endpoints.…

885 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