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Need a Suggestion for Subnetting a Lan

Hello,

let me start by givng you a quick rundown on our senario.

our engineering department uses very large cad drawings/files which are located on there own filer server i guess you can say so its chewing up a lot of traffic having to hit our main servers to hit the server and then going back through the main traffic to reach the user. so we are trying to set up this department with a subnet so that this directs traffic between the department making it much faster/efficient with out having to hit our main servers back to the user. what would be the best way to accomplish this? smart switch?

any info is greatly appreciated!
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bobrickmis
Asked:
bobrickmis
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2 Solutions
 
Mad_JasperCommented:
Virtual Lan (VLAN).

We purchased a 4 pt switch to install on our Cisco 2600 router. I configured the each interface as separate VLANS that allows me to assign separate subnets on each interfasce. I have our WLAN and business office on separate subnets. As far as the switch is concerned, we use a Cisco 3560 POE switch for the WLAN and a Cisco 2950 for the business office. Using the 4pt switch module on the router allows me to bypass using trunk lines and sub-interfaces on the switches.

You may not have that option, in which case it will depend on the router that you have. Installing a VLAN capable switch will allow you to isolate any traffic withing that VLAN. To allow traffic to go beyond the VLAN you will have to have a router is compatible.



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pgm554Commented:
Why would it have to hit the main servers in order to get to the CAD?
Are you routing through the main servers?
All a smart switch does allows it to managed.
Switches by there nature segment traffic according to MAC address,so each port is it's own collision domain.
You are using switches and not hubs ,right?
Have you thought about gigabit?
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bstrauss3Commented:
If the CAD users and server are local to each other, any switch (from the cheapest on up) will do the segregation of traffic you want.  What you get from a smart (managed) switch is the ability to configure it w/o plugging and unpluggin wires.

But the big ? is pgm554's - why is the traffic flow from local user a -> main server -> secondary server?

Can you give us more info about the current network config?

-----Burton
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bobrickmisAuthor Commented:
We are currently routing through the main server, so what we want to do is direct engineering traffic so that when engineering is looking for files or doing anything within engineering its not hitting the main server which its doing now.

we currently are using switches so i was thinking we could install a smart switch between the main servers and workstation/fileserver

i was told smart switching would be a good way of acheiving this. im looking into diffrent solutions but so far smartswitch and VLAN Dual hommed...any other info is much appreciated.

gigabit at this point is not something we are looking at.
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Easy7Commented:
Are you using your main server as a router? If you are then you might consider going with a layer 3 switch, creating two VLANs and routing the traffic between them.
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pgm554Commented:
Why are you routing through the main file server?
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bobrickmisAuthor Commented:
im sorry i might have mixed up the terminologies what we pretty much want to do is stop broadcasting and keep local traffic local and letting remote traffic reach its destination.

hope this helps...im trying to get a visual up here to better show you what we ultimately want.
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Easy7Commented:
To stop broadcasts your going to need to do some routing. You could set up two switches and place a router between them or you could get a layer 3 switch and setup two virtual LANs on it and enable routing between the VLANs.

Another approach would be to use your CAD server as a router and setup two NICs in it. One NIC would go to the CAD network and the other would go to your main network. This would segment your network without having the large expense of a dedicated router but it would do it at a performance cost on your CAD server. If the CAD server isn't processing much and the CAD users don't access much on the main network, this could work for you.

Hopefully this helps.
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ben_ezeCommented:
I agree with the VLAN solution. Somehow you have not given us the idea of how large your network in terms of number of hosts and stuffs. My suggestion is simple. Depending on the number of users, you can use the same switch or differnet switches for the VLAN. Have 3 networks, one for the engr dept and probably have the other users in another network and another network for the general servers. That means that your router should be linking up 3 networks. Depending on your choice of router, you will need to create ACLs that will dictate how your traffic gets routed from each network to the other. That way you will keep local traffic local for each of these networks and keep servers for specific network local to their VLANs. Be a little more specific and we can be more specific how best devices to use. Hope this helps
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