How to determine the level of packet loss when using a protocol other than TCP?
I am a network detective. I help people solve network mysteries by looking at the packets traveling through their networks. I received a tracefile from a customer where the complaint was pixelation while using the virtual workspace application Teradici.
They were trying to determine if the issue was packet loss, and therefore the network was at fault, or hardware shortcomings and therefore the server team was at fault. The customer configured a test bed so that the client was the only one accessing the server, and then took traces and sent them to me to analyze.
Teradici does not use TCP (Transmission Control Protocol) where any packet loss would be retransmitted. It uses ESP (Encapsulating Security Payload) which rides directly on top of IP (Internet Protocol). So no TCP sequence numbers to use to look for packet loss. But there is another way, the IP identification number. Each segment passed down from upper layers to IP gets an identification number which shows in the packet. All we have to do is check for skips in the number and we can find loss.
Bring the file into Excel -