Wireshark mailing list archives
Re: VoIP RTP Analysis, Lost Packet Analysis
From: "RUOFF, LARS (LARS)** CTR **" <lars.ruoff () alcatel-lucent com>
Date: Thu, 14 Apr 2011 09:24:59 +0200
There's an issue indeed. Why is delta=0 for all packets in analysis? Sorry, I don't have the time to look at the code right now. Lars ________________________________ From: wireshark-users-bounces () wireshark org [mailto:wireshark-users-bounces () wireshark org] On Behalf Of Jake Peavy Sent: mercredi 13 avril 2011 22:42 To: Community support list for Wireshark Subject: Re: [Wireshark-users] VoIP RTP Analysis, Lost Packet Analysis On Sat, Apr 9, 2011 at 9:20 PM, Jake Peavy <djstunks () gmail com> wrote: On Sat, Apr 9, 2011 at 8:23 AM, Barry Constantine <Barry.Constantine () jdsu com> wrote: Hi, I am analyzing VoIP capture files in Wireshark 1.4 and am confused about the RTP analysis results. The jitter results match what I expect, but the packet loss results do not. I know for a fact that the file contains no packet loss and yet the RTP analysis screen reports all packets as lost "negatively" (and gives an odd -100% value). Any ideas? Can you post a sample capture? <http://deepthoughtsbyjackhandey.com> It looks ok to me, Barry. I'm not on the same version as you, but mine is older. You have to decode your stream as RTP, perhaps that's the missing step? At least on my version the heuristics did not identify your stream as RTP. $ tshark -v TShark 1.2.1 (SVN Rev 29141) Copyright 1998-2009 Gerald Combs <gerald () wireshark org> and contributors. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Compiled with GLib 2.20.3, with WinPcap (version unknown), with libz 1.2.3, without POSIX capabilities, with libpcre 7.0, with SMI 0.4.8, with c-ares 1.6.0, with Lua 5.1, with GnuTLS 2.8.1, with Gcrypt 1.4.4, with MIT Kerberos, with GeoIP. Running on Windows XP Service Pack 3, build 2600, with WinPcap version 4.1 beta5 (packet.dll version 4.1.0.1452), based on libpcap version 1.0.0, GnuTLS 2.8.1, Gcrypt 1.4.4. Built using Microsoft Visual C++ 9.0 build 30729 $ tshark -r VoIP_Communicator_Snippet.pcap -d"udp.port==50056,rtp" -qz rtp,streams ========================= RTP Streams ======================== Src IP addr Port Dest IP addr Port SSRC Payload Pkts Lost Max Delta(ms) Max Jitter(ms) Mean Jitter(ms) Problems? 102.1.145.163 50056 244.55.112.179 50048 0xABBCE50F Unknown(118) 1 0 (0.0%) 0.00 0.00 0.00 244.55.112.179 50048 102.1.145.163 50056 0x726E7E61 Unknown(118) 40 0 (0.0%) 0.00 0.00 0.00 ============================================================== -- -jp Do you know what happens when you slice a golf ball in half? Someone gets mad at you. I found this out the hard way. deepthoughtsbyjackhandey.com ___________________________________________________________________________ Sent via: Wireshark-users mailing list <wireshark-users () wireshark org> Archives: http://www.wireshark.org/lists/wireshark-users Unsubscribe: https://wireshark.org/mailman/options/wireshark-users mailto:wireshark-users-request () wireshark org?subject=unsubscribe
Current thread:
- VoIP RTP Analysis, Lost Packet Analysis Barry Constantine (Apr 09)
- Re: VoIP RTP Analysis, Lost Packet Analysis Jake Peavy (Apr 09)
- Re: VoIP RTP Analysis, Lost Packet Analysis Jake Peavy (Apr 13)
- Re: VoIP RTP Analysis, Lost Packet Analysis RUOFF, LARS (LARS)** CTR ** (Apr 14)
- Re: VoIP RTP Analysis, Lost Packet Analysis Jake Peavy (Apr 13)
- Re: VoIP RTP Analysis, Lost Packet Analysis RUOFF, LARS (LARS)** CTR ** (Apr 11)
- Re: VoIP RTP Analysis, Lost Packet Analysis Martin Visser (Apr 12)
- Re: VoIP RTP Analysis, Lost Packet Analysis RUOFF, LARS (LARS)** CTR ** (Apr 12)
- Re: VoIP RTP Analysis, Lost Packet Analysis Martin Visser (Apr 12)
- Re: VoIP RTP Analysis, Lost Packet Analysis Jake Peavy (Apr 09)