The packet captures are taken on the Central and Branch WAN router and the WAN drops these packets.

See the receiver lost packets in the streaming statistics of the branch IP phone:īad quality is seen only on the branch side and because the central site sees a good image, it looks like the stream from the central to the branch site seems to be losing packets over the network. In this scenario, the problem encountered is that video calls from IP phone A to IP phone B result in bad video quality from central site A to branch site B where central has good quality but the branch side has issues. IP phone A (central siteA) > 2960 switch > Router > WAN router (Central site) > IPWAN > WAN router(site B) > Router > 2960 > IP phone B This is useful when you must troubleshoot audio and video quality issues when network losses are suspected. You can use Wireshark filters in order to analyze simultaneous packet captures taken at or close-to the source and destination of a call. Find the entry for QUIC and uncheck the box.This document describes the process of how to decipher the Real-Time Streaming (RTP) stream for packet loss analysis in Wireshark for voice and video calls. If you don't want the QUIC protocol to be identified, simply go to the 'Analyze' menu and select 'Enabled Protocols' from the list. If you were using a version of Wireshark prior to these versions, the same traffic may likely have been classified as UDP (or another protocol). QUIC is one of the 'newer' classifications, as it appears to have been added in 1.11.3/1.12.0. It may or may not be QUIC traffic no program of this type is perfect, but Wireshark will be correct more often than not. In your case because the traffic has been analyzed as QUIC data. I've using wireshark and noticed that I no longer see UDP but QUIC, why is this the case? Typically you will see this as HTTP, FTP, IRC, etc. The same is true for TCP traffic as well. However many types of UDP traffic will be identified (SIP, RTP, DNS, etc). If the UDP dissector is the most specific dissector for the captured data, than the Protocol column will show UDP. What is displayed in the Protocol field of Wireshark's Packet List Pane is the information returned that is most specific after analyzing the data and will determine how the data is presented. Wireshark uses dissectors and lua scripts to analyze and classify capture traffic (or parts thereof).

Wireshark capture filter protocol rtp