Trying to set up DHCP router independent of NAT

February 29, 2012 at 07:28:36
Specs: Windows 7
Here's my setup:

I have 2 DSL Lines going into a load balancing router. The load balancer is set up to distribute the traffic equally on the two lines, hence doubling the bandwidth. Though great at load balancing, it cannot handle DHCP for the 50+ users on our network, and therefore we are using another router for DHCP, which is running DD-WRT firmware.

DSL 1 - 10.1.0.1
DSL 2 - 10.2.0.1
Load Balancer - external 10.1.0.2, 10.2.0.2 internal 192.168.10.1
DHCP Router - external 192.168.10.2, internal 192.168.1.1
All other devices - 192.168.1.x

The load balancer has many options to direct traffic to one WAN port or the other based on IP address, which we would like to implement. But right now, since all my devices are on the 192.168.1.x subnet, it can't see anything but the DHCP router. So essentially it thinks it has only one client.

What I've tried:
Created a static route on the load balancer with a subnet of 192.168.1.0 and a gateway of 192.168.10.2
Disabled NAT on the DHCP Router
Disabled firewall on the DHCP Router

But something is missing - clients lose connectivity, and the load balancer still cannot see any clients other than 192.168.1.1

How can I set this up so that the Load Balancer (192.168.10.1) can see all the devices on the DHCP subnet (192.168.1.x), while maintaining connectivity?

Thanks,
Trini


See More: Trying to set up DHCP router independent of NAT

Report •


#1
February 29, 2012 at 08:16:49
You assign the dhcp router the lan ip of 192.168.10.2
You set the dhcp scope to be 192.168.10.50-100
subnet mask 255.255.255.0
gateway 192.168.10.1
You connect it only by its lan port

The mistake here was using it as a router when all you needed was a dhcp server.
This config makes it only a dhcp server to the network.

Answers are only as good as the information you provide.
How to properly post a question:
Sorry no tech support via PM's


Report •

#2
February 29, 2012 at 13:23:43
Thanks for your reply. I have about a dozen APs all with static 192.168.1.x subnet addresses, as well as several servers already on the network. Resetting all those devices to .10 addresses is a big job. Is there any way I can keep the DHCP server on the .1 subnet and route the traffic to 192.168.10.1?


Report •

#3
February 29, 2012 at 13:52:08
simply change your subnet to 192.168.1.x then
you do this by changing the balancer lan ip to 192.168.1.1 and the dhcp server router to 192.168.1.2 with a corresponding dhcp range.

Answers are only as good as the information you provide.
How to properly post a question:
Sorry no tech support via PM's


Report •
Related Solutions


Ask Question