Question - 2 static IP addresses 1 Router?!

[Ziroc]

Ok, I've never had 2 personal IP's that were STATIC so here is my deal.

We have business class Roadrunner - 1 Zyzel Modem (has 4 outputs for cat5)
I have 2 Static IP addresses
I have only 1 3 port Linksys Router (Model is ---41)

Now, the crazy question is:


Since I can't have 2 static IP's coming through this router without having to open up everything, a tech told me I could buy a SECOND router (same model) and have another cat5 coming from the second port of the Zyzel Cable modem go to the router and I forgot about 1 thing.....

How the HELL am I going to get TWO cat5's to come into ONE Server with 1 NIC Card? Now I figured that I can install a second card into the server and do it that way. RIGHT?!

Please help, if you can. my brain is fried.

[Ziroc]

Um... That tech also said that my DNS would remain the same, so if we have a simple IP change, it should be instant. Am I right? If it's on the same 'block' it should just be a matter of me changing the router static IP, and on the NT server.


But the SUBNET is slightly diff. (instead of 252, it's 248 now) does that still mean we're cool--no DNS hassles?

[ 06-26-2003, 05:31 PM: Message edited by: Ziroc ]

[Sir Kenyth]

Questions

1. Why do you have two IP's? Do you have more than one web server? Are you wanting more than one node on your subnet, and if so, are you unable to use NAT?

2. Do you mean you have more than one physical WAN connection? Two IP's means nothing for bandwidth. It's just reserved node addresses on your available subnet.

Putting two NICs in a server would only be useful if you wanted to overcome your single NIC being the bottleneck. It would double your potential throughput from the server to the next device. In this case, install and configure your NICs. Connect both to a suitable (fast) hub or switch. From there to the router. The router should hook directly to the WAN.

The only reason you would need multiple routers is if you had multiple subnets. I don't think you do. Please explain what you are trying to do in more detail.

[Night Stalker]

Z

Short answer .... you can assign multiple IPs to a single interface. Not sure on the specifics of your particular Linksys. I'll try and dig some stuff up later it one of the other techies don't answer you first.

[Sir Kenyth]

Originally posted by Ziroc: Um... That tech also said that my DNS would remain the same, so if we have a simple IP change, it should be instant. Am I right? If it's on the same 'block' it should just be a matter of me changing the router static IP, and on the NT server. But the SUBNET is slightly diff. (instead of 252, it's 248 now) does that still mean we're cool--no DNS hassles?

Your net ID is going to change and so will the DNS record. Whether your old net ID will route the same anyway depends on how their routing equipment is set up. You probably still have an address in the same block of addys routed to your providers subnet assigned for your physical area. The only change that needs to be made is in the subnet settings on YOUR routers port.

[Sir Kenyth]

Originally posted by Night Stalker: Z Short answer .... you can assign multiple IPs to a single interface. Not sure on the specifics of your particular Linksys. I'll try and dig some stuff up later it one of the other techies don't answer you first.

But why?

[Ziroc]

I was told that this Linksys router (3 port) will not 'translate' 2 static IP's (as it only has 1 WAN IP to enter)

That is why I am at a loss. I don't know too much about networking more than 1 IP. At my friends ISP, HE had a Sisco router AND hub, and his 1 webserver could run unlimited IP's off it in 'Internet service manager's website maker'.

I just don't get this. The tech dude said I COULD do it, with a lot of work, but my ass would be hanging out, and no security.


Is he right? Jeez, I am brain fried


!!!! Here is a question: Should I ask them to make a new MX record for me since my IP is different? I do run a mail server..

[Bungleau]

Z,

Check this link to the Linksys web site. It's a KB entry that states that you can set up multiple IPs, and contains references to other KBs that tell you how to set them up in particular situations. The only other thing you might need (from the picture on this one) is a hub.

[Sir Kenyth]

I take it that Linksys stuff is a whole lot different than Cisco stuff, huh? Or rather the way the provider assigns IP's. A subnet is supposed to be a block of sequential addresses, even if there's only two. To have two or more non-sequential IP's on the same subnet without the ones in between just seems, well....wrong! That's why you have to set the servers up outside the LAN subnet (router). There's no way to properly subnet with addressing like that.

[ 06-27-2003, 06:50 PM: Message edited by: Sir Kenyth ]