[Olsr-users] Received message to big to be forwarded

[Teco Boot]

With TTL=1, fragments should/may be removed from defrag buffer after 1 second.

I agree this would be a fallback mode. I'm always worried about firewall rules and fragments.

Teco


> Op 17 apr. 2015, om 16:32 heeft Henning Rogge <(spam-protected)> het volgende geschreven:
> 
> Sure,
> 
> but that is not really a good idea for UDP Multicast... especially in
> networks with some amount of multicast packet loss.
> 
> Henning
> 
> On Fri, Apr 17, 2015 at 4:31 PM, Teco Boot <(spam-protected)> wrote:
>> Clearing the DF bit enables IP stack fragmenting.
>> 
>> Teco
>> 
>>> Op 17 apr. 2015, om 16:08 heeft Henning Rogge <(spam-protected)> het volgende geschreven:
>>> 
>>> That is what I mentioned earlier... limiting the maximum size of a
>>> message independent of the packet/MTU size.
>>> 
>>> Henning
>>> 
>>> On Fri, Apr 17, 2015 at 4:07 PM, Ferry Huberts <(spam-protected)> wrote:
>>>> 
>>>> 
>>>> On 17/04/15 16:04, Henning Rogge wrote:
>>>>> 
>>>>> Yes,
>>>>> 
>>>>> but the fix does not handle mesh networks with different MTUs.
>>>>> 
>>>>> the 160 neighbor nodes produces a TC as large as it can... according
>>>>> to the local MTU. when this message is forwarded (within UDP and olsr
>>>>> packets) it reaches a node with a link where the MTU is small enough
>>>>> that the message does not fit through.
>>>>> 
>>>> 
>>>> Which is what I meant earlier: olsrd should split the packet.
>>>> 
>>>> 
>>>> 
>>>>> Henning
>>>>> 
>>>>> On Fri, Apr 17, 2015 at 3:16 PM, Ferry Huberts <(spam-protected)> wrote:
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> On 17/04/15 15:11, Jernej Kos wrote:
>>>>>>> 
>>>>>>> 
>>>>>>> Hello!
>>>>>>> 
>>>>>>> On 17. 04. 2015 15:08, Ferry Huberts wrote:
>>>>>>>> 
>>>>>>>> 
>>>>>>>> Which version of olsrd are you running?
>>>>>>>> The 160+ number is suspiciously like a problem that Henning fixed a
>>>>>>>> while ago.
>>>>>>> 
>>>>>>> 
>>>>>>> 
>>>>>>> We are running olsrd version 0.6.7.1.
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> That includes Henning's fix.
>>>> 
>>>> 
>>>> --
>>>> Ferry Huberts
>>> 
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>>