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New Member

Moving from flat to routed environment

Hi all,

I have a reasonable sized flat network with approx 100 switches.

We have several sites all connected by dark fiber mostly at 1Gbps, but some at 100Mbps.

Currently the majority of sites connect back to a C3750 switch stack - all sites are on a single subnet.

We want to subnet our network. I see most routers have two 10/100/1000 ports on them. How do I go about connecting say 10 sites to a single router and have each one on a different subnet?

Many thanks,

Ben

3 REPLIES

Re: Moving from flat to routed environment

Hi Ben

It will be a STAR topology.You must be having a Central location and remote locations.

If you want to use your existing Fiber as backbone then below is the solution.

The device placement will be

======FO======

======FO======

Remember that the router will be placed between your Fiber-Optic and switch, hence you need to fo for Fiber-to-thernet convrters.

(1)Central Location :

LAN IP = 192.168.1.0/24

WAN IP = 10.10.10.1/24

(2)Remote Location 2:

LAN IP = 192.168.2.0/24

WAN IP = 10.10.10.2/24

(2)Remote Location 3:

LAN IP = 192.168.3.0/24

WAN IP = 10.10.10.3/24

and so on.

Enable RIP on all routers.

This will take care of ur network.

Any questions?Pls revert back.

Regards

JD

New Member

Re: Moving from flat to routed environment

JD,

Are you suggesting I would need a router at each remote site I wanted to connect?

Would I be better off VLANing off each site and doing the routing with the C3750 then? - as this would involve no extra equipment, therefore no extra cost.

Are there any disadvantages to going the VLAN way?

Re: Moving from flat to routed environment

Hi

From the description of your problem, I understood that you have already purchased the router with a WAN and one LAN port.

Actually I had earlier thought of VLAN routing for you, but when I read your description again, I gave u the router solution.

Yes, you may definately go for VLAN.Pls refer to the following link :

http://www.cisco.com/warp/public/473/50.pdf

Pls rate helpful posts.

Regards

JD

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