I am doing pre-deployment testing for 7.2 on a PIX535. I started pumping engineered ICMP traffic from IXIA at 75MB and 64 frame size just for traffic flow validation (allowed via ACL). For some reason, the CPU spiked to 99%. I was under the impression that every echo-request/echo-reply from the IXIA is considered as one session thus really busy-ing up the PIX CPU. When I checked the PIX, there were only 2 connections.
Does anybody have any idea?