[jitsi-dev] How to reduce dropped packets


#1

Hi

in conversations i get regularily moments where the number of dropped packets go up and the sound gets choppy (on my side). As on most of my routes a jingle nodes proxy is involved, I suspect that this might be the reason. Could it be that the packets get dropped due to TTL expired?

Is there a way to change this? The drop out/crackling is really nasty.

Thank you in advance.
Conrad


#2

Hi Conrad,

we had a similar issue with a firewall, which upon an overlap of traffic
from several users behind it suddenly became paranoid and recognized too
many voice packets as a UDP flood attack. In any case I would recommend to
first examine your network setup and any entities that work on that level,
as they are the primary suspects. Try to find out under which circumstances
the problem occurs and whether the problem is caused by any traffic load
peaks. Do you mainly use your internal network or public internet?

Kind regards,
Alexander Fedulov

···

2012/11/21 Conrad Beckert <conrad_videokonferenz@gmx.de>

Hi

in conversations i get regularily moments where the number of dropped
packets go up and the sound gets choppy (on my side). As on most of my
routes a jingle nodes proxy is involved, I suspect that this might be the
reason. Could it be that the packets get dropped due to TTL expired?

Is there a way to change this? The drop out/crackling is really nasty.

Thank you in advance.


#3

Hello, Conrad

Hi

in conversations i get regularily moments where the number of dropped
packets go up and the sound gets choppy (on my side). As on most of my
routes a jingle nodes proxy is involved, I suspect that this might be the
reason. Could it be that the packets get dropped due to TTL expired?

How do you detect the packets being dropped? Are they lost somewhere in the
network, or are they received by Jitsi and then dropped? The latter would
be indicated in the "discarded packets" field in the call info window in
Jitsi.

One thing you could do to alleviate the symptoms somewhat is to use the
Opus or SILK codecs, which use FEC and are able to partially restore some
of the missing packets.

Regards,
Boris

···

On Wed, Nov 21, 2012 at 10:35 PM, Conrad Beckert < conrad_videokonferenz@gmx.de> wrote: