[asterisk-dev] Re: [Fwd: [svn-commits] oej: branch oej/iaxtrunkfix-1.2 r44779

Benny Amorsen benny+usenet at amorsen.dk
Wed Oct 11 02:35:28 MST 2006


>>>>> "JOE" == Johansson Olle E <olle at voop.com> writes:

JOE> ...which is exactly the situation where the problem arised. When
JOE> you have *many* calls across one IAX2 with trunking turned on,
JOE> you will reach beyond the upper limit of the MTU and you will
JOE> likely get very poor voice quality.

Then do path MTU discovery instead of adding tunables which most
people will get wrong.

JOE> There's another problem too, which you are hinting, in sending
JOE> multiple large frames across the ethernet at the same time, thus
JOE> causing congestion. We're looking into a future patch that will
JOE> space packets out a tiny bit to avoid being the cause of
JOE> congestion on the network.

This is only a problem on shared link networks, i.e. hubs and
wireless. Noone uses hubs anymore, so ignore those. Sending multiple
frames without spacing between them is exactly what you want to do if
you have a lot of high priority latency sensitive traffic -- keep
everyone else from using the wireless until you are done transmitting.


/Benny




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