Hi,

We are looking into linking our D-Star gateways to our existing data-link 
network between FM repeaters.

We already have some of our FM repeaters linked to eachother via 5Ghz Wifi 
links, and a central internet uplink in a datacenter with a 100mbit uplink. 
This is used for echolink operation currently.

Since we already have 2 sites that are starting a d-star gateway, we would like 
to use the same network for the internet connectivity.

Our idea is this:

The router in the datacenter gets the lan IP 10.0.0.1/8
The first gateway gets 10.0.0.2/8
the second gateway gets 10.0.0.3/8
etc (10.0.0.4/8 for the next, .5 for the one after that, etc)

Since we have a public /24 range in the datacenter, it should not be a problem 
to map a public IP to all the d-star repeaters, and vica versa.

The question here is: Is it possible to do this ? To have the gateways on 
another IP then 10.0.0.2 ? The D-Star manual explicity puts the D-Star GW on 
10.0.0.2, however if I look at the japanese network 
(http://www.d-star.jp/D-STARjapan.pdf) I see a lot of gateways on other IPs, 
though I realize, they are probably linked with icom linking systems, and not 
LAN or Wifi-Lan etc. (with this I mean: The linking is done on the RF side of 
the repeater and not on the Network side (behind the LAN connector)

I have been looking around on the internet about this and I cannot really find 
a lot of info about this.

Honestly, I find the 10.0.0.0/8 system a bit stupid. It would have been better 
if the system was developed to use the 44.0.0.0/8 space, devided into subnets 
such as was the case with AMPR, and have each gateway have its own subnet and 
use real IP routing instead of bridging and tunneling etc. But I guess this was 
a choice to support roaming over different repeaters.

73s
Robbie
ON4SAX


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