t1 IP address assignment

[WannaFly]

Ok, i should know this one, but I don't.

At my work we have a T1 line that goes into the CSU/DSU then to a cisco somthing or other, then the cisco uplinks to our router.

--->T1--->CSU/DSU-->Cisco-->Router

MY question is, we have something like 63 IP addresses assigned to us, our router uses one. How can i connect a machine and give it a public IP without it being behind the router? I dont want this machine on the network with all my other machines. I dont want it behind NAT either. Please let me know. Thanks!

 

[alrox]

You'll need to be specific about which cisco model you're talking about, and what your 'router' is.

 

[WannaFly]

Originally posted by: alrox
You'll need to be specific about which cisco model you're talking about, and what your 'router' is.

Sorry, i didnt think that info would be important:

Cisco 1601R uplinked(it only have 1 10mpb port) to:
Linksys BEFSR41 (this is our DHCP/gateway)

 

[alrox]

linksys routers don't support more than 1 'wan' ip, which is what you're in need of. You'll need to put a host on the same switch/hub as the linksys wan port is, and assign it an ip out of your pool of 63.

 

[WannaFly]

So basically, without a different router, i cant? b/c the cisco only has one port.

 

[alrox]

get a switch and plug the ethernet of the cisco into it, as well as the ethernet cable of the linksys/wan port into this switch.

If I'm understanding your setup correctly, you can just add another host to this new switch with a wan ip and you'll be routing directly to the cisco.

 

[WannaFly]

Originally posted by: alrox
get a switch and plug the ethernet of the cisco into it, as well as the ethernet cable of the linksys/wan port into this switch.

If I'm understanding your setup correctly, you can just add another host to this new switch with a wan ip and you'll be routing directly to the cisco.

Ok, my question then is what would the gateway be for the new host? itself?

 

[alrox]

The gateway of any IP host is never itself. In your case the gateway for the new host will be the ciscos ethernet port IP.

 

[Abzstrak]

why in the hell is the linksys in there in the first place? that router can do NAT and everything for you. configure the cisco properly and throw the linksys away..

then you can easily create a NAT pool and assign an unused outside IP to your internal address

 

[WannaFly]

well, unfortunately, i didnt set this network up. The people that did, are dumb.

I will look into that, i have never used a cisco before, so i need to figure out howto get into that thing and configure it!