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Fragmented UDP Packets in RTP Session



I have a problem on a video conference system over wan with fragmented udp packets. In a video session are a lot of stops on the screen. I have created a wireshark dump where I have found a lot of the following messages "Fragmented IP protocol (proto=UDP 17, off=0, ID=39a4) [Reassembled in #15794]

The first to solve this problem for me is, to configure qos between both sites. The other one is, the check the mtu size on the systems. What else can I do to solve the problem?


asked 23 Jul '13, 00:04

flugfaust's gravatar image

accept rate: 0%

edited 23 Jul '13, 02:23

grahamb's gravatar image

grahamb ♦

Does nobody have a solution for me?

(24 Jul '13, 13:50) flugfaust

Not really an "Ask Wireshark" question, more a "Fix my Network Request", hence the lack of replies.

(25 Jul '13, 02:39) grahamb ♦

I wonder if the conference system should be making RTP packets so large that they have to be fragmented or do you have a smaller MTU than expected(by the application)? How large are the fragments? Freeze might be caused by packet loss have you checked for that?

(25 Jul '13, 04:22) Anders ♦