Solved

Routing multiple branches into different subnets at Head Office

Posted on 2013-02-05
12
486 Views
Last Modified: 2013-02-07
Hi Experts.  I have four different branches coming into the Head Office via leased line.   The servers for each of the departments are on different subnets at Head Office.    I currently have the default gateway of all the routers as being a PC that has multiple NIC's and I route them to the different subnets via routing on the PC.   I now need to add more branches and subnets.  Whats the best way to go about this.  I've read up on L3 switches but it seems to be quite an expensive option.  MAny Thanks.
0
Comment
Question by:PNRT
  • 6
  • 6
12 Comments
 
LVL 50

Expert Comment

by:Don Johnston
ID: 38855480
I have four different branches coming into the Head Office via leased line.
What type of "leased line"?  What type of hardware are you using to connect the sites (Cisco, Netgear, etc.)

I currently have the default gateway of all the routers as being a PC that has multiple NIC's and I route them to the different subnets via routing on the PC.
The PC is doing the routing instead of the routers?
0
 
LVL 2

Author Comment

by:PNRT
ID: 38856765
Hi Thanks for the reply.  They are Cisco routers that are not under my control (Service Provider) So I had all of them configured with the PC as the default gateway.  That way I can add and change routes on the PC without having to bother with the SP.   So yes, the PC is doing the routing not the routers.
0
 
LVL 50

Expert Comment

by:Don Johnston
ID: 38857223
Can you post a topology diagram? I can't figure out how your network is setup.
0
Netscaler Common Configuration How To guides

If you use NetScaler you will want to see these guides. The NetScaler How To Guides show administrators how to get NetScaler up and configured by providing instructions for common scenarios and some not so common ones.

 
LVL 2

Author Comment

by:PNRT
ID: 38859314
Thanks for the reply.  The attatched graphic show a number of different companies, branches and sub branches all connected to the Head Office via cisco routers.  All the traffic on all the routers is directed to the single workstation.   Routes are then added to the workstation as necessary.   The servers are on three seperate subnets and there are three NICs on the workstation to route to each of the subnets.   Each companie/branch/subnet needs to access only certain servers on each of the sebnets.  

This is working correctly but my question is, is there a bettrer way  bearing in minbd that I do not want to chnage routes on the routers themselves.   Esecially as there are more connections in the future.   Hope I made myslef clear.  Many Thanks
Drawing1.jpg
0
 
LVL 50

Accepted Solution

by:
Don Johnston earned 500 total points
ID: 38859402
What type of "leased line"?

So I'm guessing that at each location there's a provider managed Cisco also?

And at your central site, the Cisco routers hand-off and ethernet link that connects to your PC with the multiple NICs?

I haven't seen a PC used as a hub router in years. It (obviously) works, but typically a router (or multilayer switch) is used.

If you can't afford a router with enough ports or a multilayer switch then just keep adding NICs to your PC.

If it were me, I would get a multilayer switch. A Cisco 2960 can do basic layer 3 routing.
0
 
LVL 2

Author Comment

by:PNRT
ID: 38862848
Thats just the sort of information I was looking for.   Could you recomend a cheap multilayer switch?   I checked out the Cisco 2960  switch but is stated as being a fixed confiuration switch which I gather wouldnt work.   Any other choices?    MAny Tha ks for your help
0
 
LVL 50

Expert Comment

by:Don Johnston
ID: 38863009
Why do you need a modular switch ?
0
 
LVL 2

Author Comment

by:PNRT
ID: 38863021
Sorry, dont get that one.   Looking for anything that can achieve what we have been discussing above.  When you suggested the Cisco 2960,  I took "fixed configuration" to mean that it could not be configured as we would require.  That not right?   Again, looking for any device that can route the way we discussed.   Thanks for the reply
0
 
LVL 50

Expert Comment

by:Don Johnston
ID: 38863818
No. "Fixed Configuration" means that it's not a modular switch. Which means you can't add ports or change the types of ports. i.e. if you buy a 24-port UTP switch, you're stuck with a 24-port UTP switch. You can't add another 24-ports later.
0
 
LVL 2

Author Comment

by:PNRT
ID: 38863834
I understand now.  Many Thanks.  So, back to looking for a cheap switch that will do the routing I described to replace my old PC.   From research I gathered that the latest versions of the Cisco 2960 can route ( if it has the right os ) is there any others you can suggest?
0
 
LVL 50

Expert Comment

by:Don Johnston
ID: 38863881
HP and Netgear are alternatives. Just make sure that it can route. You're looking for what's referred to as a "multilayer" or "layer 3" switch.
0
 
LVL 2

Author Closing Comment

by:PNRT
ID: 38863929
Thanks for all the help
0

Featured Post

Netscaler Common Configuration How To guides

If you use NetScaler you will want to see these guides. The NetScaler How To Guides show administrators how to get NetScaler up and configured by providing instructions for common scenarios and some not so common ones.

Question has a verified solution.

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

This tutorial will go through the steps required to write a script that will back up the configuration settings of a HP-ProCurve switch. You will need to get the following things to follow this tutorial: Telnet Scripting Tool e.g. TST10.exe …
In the hope of saving someone else's sanity... About a year ago we bought a Cisco 1921 router with two ADSL/VDSL EHWIC cards to load balance local network traffic over the two broadband lines we have, but we couldn't get the routing to work consi…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…

810 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