At 12:06 AM 02/29/2000 -0300, Rubens Kuhl Jr. wrote:
Thanks for the long answer, but this question was actually on how the router performance impact of CAR or TCP-Intercept changes between using CEF switching (ip route-cache cef, default) and CEF-Flow switching (ip route-cache cef + ip-route cache flow). Although NetFlow impacts router performance a little, running CEF-Flow makes large access-list processing faster than just running CEF; I think some other features (IPSec ?) also have performance gains. I was wondering whether CAR and/or TCP-Intercept would have better performance with CEF-Flow.
Again, forget about flow-switching in any context except for tracing back attackers. If you want the functionality to lower the threshold of DoS pain, CEF is your baby. This is an operational forum, yes? Where is the input from the (current) operators? - paul ps. And they can both be used in conjunction with one another to reach an end goal...