Hi, I'm trying to fetch some statistics such as bytes_count of a certain switch.
I use *ofp_flow_stats_request()* to send the request and handle it this way: for f in event.stats : bytes += f.byte_count In order to get the byte_count of a certain interval, I send it periodically and use *current_byte_count - former_byte_count *to get the byte_count of the last interval. However, sometimes I got some negative values. I want to know what's the meaning of the byte_count in *ofp_flow_stats.* Or do I need to use other request bodies such as *ofp_aggregate_stats_request *to fetch the byte_count of a certain period of a certain switch? Thank you. Bowei
