Based on our testing it looks like it all has to do with packet size. With
small packets the throughput is very low. With what Cisco calls an
"internet mix" of packet sizes throughput is much better. When doing max
MTU packets, the throughput is of course the best.
Also remember that Cisco as well as most other vendors advertise one way
traffic only. If you have traffic on the return path, that counts against
their numbers.
So 400000 pps one way is the same to them as 200000 pps both ways.
Interesting thread
Thanks.
Based on our testing it looks like it all has to do with packet size. With
small packets the throughput is very low. With what Cisco calls an
"internet mix" of packet sizes throughput is much better. When doing max
MTU packets, the throughput is of course the best.
The other thing I've found about traffic type is how sensitive
netflow is. I was running it for a while, then I got a co-lo customer
that had a lot of UDP traffic with small packet sizes and rarely more than
a few packets between the same src/dest ip/port (much like DNS
queries). It was enough to flatline the box and cause it to crash.
-Ralph