I am researching the throughput of my Cisco routers. For now I know that throughput depends from packet size and configured services like NAT or ACL filtering. My question is about packet size. For example throughput for Cisco 2911 router depending the packet size (64-1500 bytes) is from 180 to 4236 Mbps, which is very big span. (Cisco 2911 PPS is 353.000) My question is how can I know how big are packets in my network? From which factors depend the size of MTU? And size of packets itself? Is it the application that generates the data? Is it the operating system? Is it the NIC on my computer? Because it is directy in relationship with throughput on my router.
One more question. Does anyone have the latest comparsion of Cisco routers in Packets Per Second category?