recently company network experienced packet loss problem when pinging external websites, 10% packet loss rate. Now I'm sure it's due to internal access behavior after lots of tests. but I just could not find out why and how. I had done some sniffer works by Ethereal. It seemed there were too many TCP packets which flag were set to RST, when these packets appeared, the delay to external website increased, sometimes packet loss happened. The destination port of these TCP packets with RST flag was 80(http) and all these packets were sent from our internal users' WIN XP system.
I could not tell if it's these TCP packets with RST that caused packet loss and delay jitter. Here I hope someone would show me lights on such problem and if only there is a solution.Thanks in advance!