On Mar 24, 2015, at 5:46 PM, Walter Parker <[email protected]> wrote:
> 
> Using a chart like 
> http://www.engineeringradio.us/blog/wp-content/uploads/2013/01/Subnet_Chart.pdf
>  you can see the different /28 and /29 subnets that exist on a /24 network.
> 
> You would bind the .248/29 network to the WAN interface (use a /29 to leave a 
> few extra addresses).

If the provider side of the interface is set for /24 and his WAN is set for /29 
expect hilarious shenanigans to ensue.

> 
> Then you would bind an reserved network (10.X, 192,168,X 172.16,X) to the LAN 
> interface.
> 
> Then on your third interface, you would bind multiple networks, .240/29, 
> .232/29, .224/29, etc to the OPT1/DMZ interface.

What you say?

> Then each customer would use put there equipment directly on that that 
> network. If the customers have routers themselves, you might want to setup a 
> bunch of /30 networks (.252/30, .248/30, .244/30, .236/30, .232/30) for your 
> and the customer's WAN interfaces. Then start down from .224 and assign /29 
> networks for the customer's DMZ/OPT1 interfaces. Unless the customer is 
> running without NAT, then the addresses could be put on the customer's LAN 
> interfaces.
> 
> The big trick here is make sure than none of your networks have overlapping 
> IP address ranges. The chart above is very helpful for tracking different 
> sizes. This means that you can't put .254 on one interface and .249/29 on a 
> different interface as those networks overlap.
> 
> 
> Walter


He needs a routed subnet or has to use VIPs on WAN and 1:1 NAT.  Or some 
convoluted bridging thing that I shouldn’t even mention because it’s no 
solution at all.


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