Subnetting

[itaviator]

Not sure where to turn, tried Cisco's site, but too much information! LOL

Anyways, we're looking to subnet a portion of our network here. Our Sales dept is physically in another bldg which is currently connected to our LAN. But we need to get them on a different subnet, as our whole LAN is on a 192.168.0.X scheme. We only have a handful of ip's left (we're static), and the sales dept is going VoIP soon which doubles their ip usage (have about 30 users there).

I've looked at VLAN's (won't work as not all of our switches are VLAN capable between Sales and the internet), so I'm headed more towards putting in a router, between their switch and ours. Would like to put them on a 192.168.2.X scheme. Would also like to stay with a Cisco, as we already use 2 Aironets and 3 PIX's here. Been very satisfied with their products and support. I was thinking of the 800 series, but can anyone point me in the direction of which model? Sales would comprise about 30 users and we have about 120 more on the rest of network. Or do I need something other than an 800 series?

Also, the Sales dept subnet would then go through the other subnet to reach the internet, servers, etc.

Thanks in advance for the recommendations!

Systems Administrator

 

[voltron1011]

192.168.x.x is a private address scheme, so you can take 192.168.1.x/24 or 192.168.2.x/24 and so on.
You also mention static addresses, but I assume you mean external addresses. This doesn't really matter because you are already doing NAT/PAT (network address translation, port address translation). All you need to do is set up a new private subnet (192.168.2.0/24 for example) and set one of your external/public IP's to overload NAT.

 

[itaviator]

Thanks for the reply. I was looking for a specific model that anyone could recommend, but yesterday I talked to a couple of vendor's network engineers and I was recommended to the Cisco 1811 router.



Systems Administrator

 

[CiscoRC]

1811 is a good Router, I've used it, and tested it, and gave it a test drive with the network. Very sweet.



***************
R. Corrigan Jr.
Network+, (working on CCENT+CCNA)

 

[gb0mb]

What about just connecting your new subnet to a port on one of your pix firewalls and let it do the routing. In my experience my PIX firewalls always seemed to be overkill for the networks they protected and adding a another subnet to them never created any huge load on them.

Also I just deployed a cisco CCME voip setup and put it on its own network. This saved me some time since I didn't have to worry about QOS for the voip since it was standalone.

Gb0mb

........99.9% User Error........

 

[itaviator]

gbOmb:

That would be a great idea if the PIX was near where our Sales dept link is at. Our PIX is located in another building down the street from our Sales dept.

Our 1811 router came in Friday, so hopefully later today I'll start configuring and testing it.

Systems Administrator