Re: [Ryu-devel] Throughput losses with HP Switch

2017-07-13 Thread Sambuddho Chakravarty
Strangely we are seeing a terrible throughput drop when packets are matched (by IP header) and then modified and sent out through a different egress port (basically NATting packets). Line rates of the interfaces are 1 Gbps, but when we turn on the openflow mode and matched packets are forwarded th

Re: [Ryu-devel] Throughput losses with HP Switch

2017-07-13 Thread Oleg Sadov
In fact, it depends on which fields are used in the match for HP switches: http://h20628.www2.hp.com/km-ext/kmcsdirect/emr_na-c03991489-1.pdf For ex. in HP 3500 yl MACs handled by software level, but IP address for IP Eth type (0x800) -- in hardware. As a consequence -- switching form MAC to IP m

[Ryu-devel] Throughput losses with HP Switch

2017-07-12 Thread Chaitanya Kumar
Hi We are working on a research project that involves HP OpenFlow enabled switch (HP 3500 yl). We are facing some issues with performance particularly when operating the switch in "OpenFlow" mode. The switch is controlled via a desktop running the Ryu controller. The rules on the switch match pa