> > Do you consider in vrouter soething similiar to megaflows form openflow ? > (example http://networkheresy.com/tag/megaflows/) > It creates wildcard entries in advance. Probably it could help with udp > traffic. Of course there are situations where we can loose some security in > advance of the performance. >
Piotr, To the best of my understanding vrouter today by default is control plane driven ... just like all properly designed routers in the market today. That means that concept of "megaflows" invented to fix cache based OVS with OF just does not apply as all tenant routes (and labels) regardless if needed or not are pushed to the vrouter data plane ahead of time. The only exception as I recall looking at it year or so ago was some more complex policies where the first packet needs to hit the agent to do the policy lookup then subsequent packets in the flow go directly via a vrouter data plane. That with some effort could be optimized by adding a compiler to process policy and push it to the FIB ahead of time as well. Now with all of that said since vrouter's DPDK implementation is available it may or may not be that much too relevant any more as both vrouter and agent would sit now in user space. Many thx, r.
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