Long delay on response to PPPoE NAS (Mikrotik) on FreeRadius 3.0.12 + MySQL

Nataniel Klug nataniel.klug at gmail.com
Tue Oct 18 15:38:32 CEST 2016

Hello Alan,

I found the problem and it's not in FreeRadius or MariaDB. I am sorry for
this... It's a return-path that is making a problem. In this new structure
we have LVS that will make a load balance for our Radius servers behind
this LVS. For them to come to my network I have two virtual routers using
VRRP for the gateway of those Radius Servers. There is the problem. I
powered off on of this VR and now it's running smoothly. Sorry for this
inconvenience. I will have to study more about this cluster idea to make it


*Nataniel Klug* | nataniel.klug at gmail.com

2016-10-18 11:18 GMT-02:00 Alan DeKok <aland at deployingradius.com>:

> On Oct 18, 2016, at 8:14 AM, Nataniel Klug <nataniel.klug at gmail.com>
> wrote:
> > The problem is that for some reason FreeRadius is taking a long time to
> > answer to NAS Access-Request and the NAS send a lot of requests to
> receive
> > an answer. Bellow I show a FreeRadius log and later I will explain what I
> > saw in this (for the purpose of this log I disabled SQL IPPool and
> > Simultaneous-Check):
>   How long does it take to respond?  The debug log you posted doesn't show
> times.
>   And the server can easily process 10K packets/s in the default
> configuration.  if it's slower for you, then you changed something locally
> which slows it down.
>   Also, the NAS retransmits don't necessarily mean that the server is
> slow.  Maybe the NAS isn't getting the responses, or the NAS is broken.
>   Alan DeKok.
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