Thank you very very much for support and informations. Geaaru On Mon, 2015-07-27 at 11:09 -0400, Alan DeKok wrote:

On Jul 27, 2015, at 11:01 AM, Geaaru <geaaru@gmail.com> wrote:

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Link is homepage:

Fixed, thanks.

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But why if all home_server are in status alive (and first failure on receive packet) proxy send directly to second home_server without re-transmissions?

I don't know. It depends on how the client retransmission works.

The proxy isn't magic. It doesn't invent packets. It "fails over" a packet ONLY when it receives a retransmission from the client, AND it notices that the home server WAS alive, but is now marked "dead".

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RFC how describe fail-over operation ? Can you said me what are RFC that describe these operations ? Thanks.

There is no RFC. There is only the FreeRADIUS code. There is no standard for RADIUS proxy fail-over.

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A client said me that 3GPP specification doesn't expect a response about a Disconnect-Request if session doesn't exists or is already down. Do you know if this is correct ?

That's not true. Read RFC 5176 for details.

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From freeradius side this means that when I receive a Disconnect -Request to an already closed session and proxy forward correctly packet to correct NAS , proxy doesn't receive Disconnect-Nack or Disconnect-Ack and so NAS is marked as zombie/dead.

No. The NAS will respond.

Alan DeKok.