Radius - Single IP or Identifier for NAS List

RouterOS General
1

We’ve currently implemented a hotspot based network for a WISP using FreeRadius and MT’s. Most of my hotspots are setup on ports of a backhaul router, which means they have at least two networks connected into them.

I’ve noticed that if one network goes down, when the OSPF updates the router it is now contacting the Radius server with the “backup” networks IP address.

I wanted to know if there was anyway to have the MT report that it is the same PC to the radius server, regardless of network/ip?
This way I don’t need to have 2+ NAS entries for every hotspot controller.

If anyone has any ideas or can point me in the right direction to find someone that does, please let me know.

Thanks
-Keith-

2

You could try adding a bridge with no interfaces, call the bridge loopback. Then add a /32 address to the bridge. THat address will propogate using OSPF on your network if you are advertising Connected routes in your OSPF config. Next, setup a SRCNAT rule to change the src address on the outbound radius traffic. I’m not sure that will work, but it might get you going on the right track.

Mikrotik ought to add a parameter to entries in the /IP Services tab to allow you to specify the source address.