Hi Panos, my friend Steven Noble (from routeranalysis.com) pointed me to the following doc to understand the HW/SW specifics of the HPs:
http://bizsupport2.austin.hp.com/bc/docs/support/SupportManual/c03512348/c03512348.pdf -Christian On Mon, Jan 28, 2013 at 4:34 PM, Panagiotis Georgopoulos <[email protected]> wrote: > Hello all, > > > > We have a 3500yl HP Openflow enabled switch which communicates with > Floodlight via Flowvisor. We noticed that when we run the LearningSwitch > implementation on Floodlight, the user throughput falls from 50Mbps to > 1Mbps! > > > > After a lot of debugging we realized that this throttling was because the HP > switch stopped processing the packets on hardware, and instead was using the > slower software path. > > > > In order to get the flows to be processed by hardware again on the HP > switch, we had to resort in removing the destination MAC addresses from the > Learningswitch implementation of Floodlight. The HP manual reports that when > rules are executed in hardware then the destination MAC address field in the > packets is ignored. However, we found out that this is not the case; the > destination MAC address field should not be present in the packet at all, > otherwise the switch falls back to software processing. > > > > Could people using the same switch verify if they have the same experience? > > > > This throughput throttling down to 1Mbps (from the theoretical 1Gbps) is not > really acceptable in my opinion. > > > > Thanks a lot in advance, > > Panos > > > > > > PS. I apologize if this is not the right mailing list for this discussion.. > > > _______________________________________________ > openflow-discuss mailing list > [email protected] > https://mailman.stanford.edu/mailman/listinfo/openflow-discuss > -- Christian _______________________________________________ openflow-discuss mailing list [email protected] https://mailman.stanford.edu/mailman/listinfo/openflow-discuss
