I use Ethereal (haven’t upgraded to
WireShark yet) for that exact purpose, voip over WiFi. The RTP analysis tool
works pretty well as far as I can see.
You may find that the default analysis of the
packets does not label the RTP packets as RTP. There is a selection that lets
you tell Ethl/WS that a particular port pair should be treated as a particular
protocol. Just find one packet and designate it as RTP. Then you can use the
RTP analysis tool.
I often also look at the inter-packet time
gaps individually to see what is going on. You may be able to spot one of your
unusual delays and see what else is going on on the network.
From:
wireshark-users-bounces@xxxxxxxxxxxxx
[mailto:wireshark-users-bounces@xxxxxxxxxxxxx] On Behalf Of William Irving Zumwalt
Sent: Saturday, December 09, 2006
7:51 PM
To: frnkblk@xxxxxxxxx
Cc: Community support list for
Wireshark
Subject: Re: [Wireshark-users]
voip troubleshooting
Thank you, this is all
helpful.
I just have one question. If I don't know the exact protocol that this
particular VoIP software is using, is it safe to say it will be riding on RTP
and is there a specific way I need to setup a filter to figure this out? Or how
might I go about this?
On 12/9/06, Frank
Bulk <frnkblk@xxxxxxxxx
> wrote:
Will:
Here's a great article to get your
started:
http://www.voip-info.org/wiki/view/How+To+Debug+and+Troubleshoot+VOIP
Don't worry if your capture gets your
more than just the RTP traffic, unless you're moving Mbps over that wireless
link. Wireshark's RTP stream analysis will automagically select just the
RTP streams to analyze.
Frank
From: William
Irving Zumwalt [mailto:wizumwalt@xxxxxxxxx]
Sent: Saturday, December 09, 2006
2:30 PM
To: frnkblk@xxxxxxxxx;
Community support list for Wireshark
Subject: Re: [Wireshark-users]
voip troubleshooting
What is jitter? And, is
there anything around that might help me configure for capturing only RTP (if I
understand correctly, the VoIP protocols ride on top of RTP which rides on top
of IP?) and making sense of what's going on?
On 12/9/06, Frank
Bulk <frnkblk@xxxxxxxxx>
wrote:
Yes Wireshark includes RTP stream analysis
including latency and jitter.
Frank
From: wireshark-users-bounces@xxxxxxxxxxxxx
[mailto: wireshark-users-bounces@xxxxxxxxxxxxx]
On Behalf Of William Irving
Zumwalt
Sent: Saturday, December 09, 2006
12:00 AM
To: wireshark-users@xxxxxxxxxxxxx
Subject: [Wireshark-users] voip
troubleshooting
Hi all,
I hope I can use wireshark for this task I have.
There's two way voice traffic going on and at one point the IP is sent across
radios. The problem is that at some point, the sound comes through delayed,
though it always comes through complete. It sounds as if theres buffereing
taking place and the voice just stops, then continues. I'm thinking maybe it
would be something like one radio is not transmitting strong enough which means
some packet ACKnowledgements might not be making it back to the voip source on
the TCP network, but I need to see what the packet conversation actually looks
like to figure this out.
I was hoping wireshark might be a good tool here to help me troubleshoot what's
going on.
Any help, suggestions, comments on what to look for would be greatly
appreciated since I haven't yet done this.
Will
_______________________________________________
Wireshark-users mailing list
Wireshark-users@xxxxxxxxxxxxx
http://www.wireshark.org/mailman/listinfo/wireshark-users
|
