See if the wiki @ https://cwiki.apache.org/CLOUDSTACK/usage-and-usage-events.html answers your questions
Thanks, -Nitin On 07-Nov-2012, at 2:46 PM, sx chen wrote: hi,all: I want to statistic the network flow sended and recived by vm.So I want to know how to compute the network flow or traffic in cloudstack. (1)How can I statistic different traffic's flow?CloudStack network flow is based on network(physical network or virtual network) or traffic(public or guest...)? (2)How can i use table cloud_usage.usage_network?what is the mean of columes bytes_sent,bytes_received,agg_bytes_received,agg_byyes_sent in this table?can i use these columes to count the traffic flow? thanks.