Currently am using Logstash , Elasticsearch & Kibana to gather and visualize Netflow data from few of our gateway routers.
With Netflow data am receiving " netflow.in_bytes " filed which contains the bytes of data. I was trying to put that data in to a timelion and using the following function to calculate the Mbps.
But the output am getting is not accurate. Can anyone advise me on this ?
.es(timefield=@timestamp, metric=sum:netflow.in_bytes).derivative().multiply(8).divide(1048576).divide(60).lines(fill=2, width=1).color(green).label("Inbound traffic").title("Network traffic (MB/s)")