[j-nsp] what's the kind of sampling performed on j-flow ?

does anybody here know what kind of packet sampling does j-flow implement? - deterministic: 1 packet out of N - random: 1 packet with probability 1/N - stratified random: 1 random packet out of every consecutive N. thanks! Fernando Silveira ___ juniper

[j-nsp] periodic patterns in juniper netflow cache

. I have another set of traces (which I believe come from Cisco routers) and they don't have the periodic flow export pattern I'm referring here. Can anyone tell me if there is such a timer in JunOS, i.e., flushing the flow cache every minute (or an interval defined as a parameter)? Thanks