Multiple Routers configuration

[alexter]

Hello there,

Have a wireless router with external ip xxx.xxx.xxx.180 nating mail and rdp, dhcp

I have another external ip that I want to use for another server xxx.xxx.xxx.179

Ips’ coming from same ISP

Do I need to get a second router for that particular ip?

I need to do nating with this one too and open ports to that server

How do I connect the second router to the first router?

Second router wan port to first router lan port?

In addition have another router (Comcast cable) with not a static ip,

For internet access only, I have this connected to same segment,

No nat, dhcp on for 30 devices, wired internet and wireless access

connected to the switch/hub, is that okay? Or should I connect this

one to a Ethernet port of the first router?

do not want to spend money for dual wan router since I have what I need.

Thanks in advance

 

[bill001g]

Only way you are going to get it partially to work is to hook a switch to the cable modem and then hook both routers to the modem. That way each will get a ip from the ISP.

Your much larger problem is hooking them both to the same lan. You will have to find a way to direct traffic from each machine to the proper router.

 

[alexter]

Cable is from one ISP (Comcast) and do not have a static IP address and is setup with cable modem and router for internet access for wired and wireless access, all computers/devices pointing to this gateway for access to internet, have like 20 computers and they all have static ips inside the network

The other router (first one) connects to another ISP (TelePac).

Telepac is providing the block of Ips to use - .179 and .180, IP .180 in the router is being use for connecting mail, remote desktop to the mail server in house.

Implementing Avaya mobile and would like to use .179 since the server requires some ports to be open and a FQDN to access the server, which is already done, but not sure if I can add another router with that .179 address and connect the new router's wan port to the first router's lan port and do nating to open ports.

I don't want 2 network segments....using 192.168.0.xxx... for local computers/devices/dhcp

 

[bill001g]

Cable modems are the only one that are "simple?" to connect 2 routers to. Other systems depend heavily on how the ISP is giving you multiple IP.

On systems like cable modem they just allow multiple end mac addresses. On other systems they map multiple IP to the same mac address. If your is like the second you need a special router...in many cases only the one from the ISP works. There is massive variation in how they do this. The simpler ones just let you define different internal IP to map the NAT to.

The one I have messed with like this are ATT uverse and it is very strange. It will allow the multiple nat but it also allows you to directly assign IP to lan ports..ie it allows you to in effect give a single machine a external address.

Don't know what to advise. Most setups like your are considered business and the ISP generally provides a higher level of service so maybe they can point you in the right direction.