[SR-Users] Invite Fragmented

[Vassilis Radis]

I experienced a similar problem with kamailio and packet fragmentation on a
Fedora 17 (32bit with its stock kernel) and kamailio 4.0.1:
Some mobile softphones(I think it was Zoiper or CSipSimple on Androids)
were configured to negotiate a whole lot of codecs which made the invites
have a huge sdp that made the packet too big. Normally OS should deal with
it but the calls were not going through. I am sorry I dont have more
details, I just told the user to use 2-3 codecs and problem was solved.
Maybe kamailio has some kind of upper limit buffer equal to the MTU? I am
not familiar with so low leveled details though.

Bill.


On Fri, Oct 25, 2013 at 9:58 AM, Daniel-Constantin Mierla <miconda at gmail.com
> wrote:

>  Hello,
>
>
> On 10/25/13 2:45 AM, Gus Monti wrote:
>
>  Hi,****
>
> There are often times where key packets are missing from homer traces.
> This seems to be caused by packet fragmentation. It is most readily
> evidenced by the trace showing an Invite entering the SBC from the outside
> and then no invite on the inside being seen but the 100 trying is seen on
> both sides.****
>
> Any Idea why?****
>
> can you look at the traffic on the network (e.g., with ngrep)? Maybe you
> haven't set the flag for storing the outgoing requests. Fragmentation is a
> matter of OS and if you run a recent Linux based distro, this should be no
> problem.
>
> Cheers,
> Daniel
>
> --
> Daniel-Constantin Mierla - http://www.asipto.comhttp://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
> Kamailio Advanced Trainings - Berlin, Nov 25-28; Miami, Nov 18-20, 2013
>   - more details about Kamailio trainings at http://www.asipto.com -
>
>
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