Duplicate Radius Accounting

[Marinko Tarlać]

If you're using Mikrotik, update to the latest version... I had many 
problems with older versions (2.9.x)

On 6.8.2012 15:19, Alan DeKok wrote:
> Christopher Manigan wrote:
>> In my logs I see many entries like the following:
>>
>> Info: WARNING: Child is hung for request 51651 in component <core> module <queue>.3
>> Error: Dropping request (2049 is too many): from client myhost.mysite port 32869 - ID: 239
>    Something is blocking the server.  This is usually a slow database.
>
>> In the last ~10 hours, the status server reports the following for accounting:
>>
>> Responses	 0
>> Duplicate	 954442
>> Malformed	 115045
>> Invalid	 564029
>    That is *terrible*.  Zero responses?  It indicates a catastrophic
> failure in the system.
>
>    And *malformed* packets?  Something is sending NON RADIUS packets to
> the RADIUS port.  Go fix that.
>
>    And "invalid" packets?  Something is sending non-accounting packets to
> the accounting port.
>
>> Dropped	 0
>> Unknown	 0
>>
>> Radius will hang and start to time out and eventually die.  It looks like the duplicate count gets extremely high very quickly.  Could it be the NAS that are pointing to it?  Or could it be my radius configs somehow causing this?  I am not really sure how to prove it out or troubleshoot.  I can increase the max requests but I don't think that is the right solution.
>    Your RADIUS system is horribly slow, and isn't finishing any requests.
>   Go fix that.  The default configuration *works*.
>
>    And your NAS is broken.  Something is very, very, wrong in your
> network.  Find out what it is.  Ensure that only RADIUS accounting
> packets go to the RADIUS accounting port.
>
>    Alan DeKok.
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