hi all I have cisco 2514 router ,some times when i ping to it (from internal lan) it resbond it 500 to 1200 ms and give a lot of packet loss, and this goes for about two houres and then finished and the router gets back to its normal work (ping replyes with 10-20 ms at most) while these 2 houres the cpu utilization varies from 85% to 90% . i think there is a machine inside that is the reason for thatwhen send a lot of
traffic . how can i detect the ip of this machine. and how to be sure it not from outside, and if it was from outside, how
to detect its IP and prevent it from attcking my network. i hope i can find an answer because i;m in a big trouble. thank you all.