How to calculate traffic overview?

[RJ2]

I want to calculate the volume of traffic ( FortiGate firewall) ;

I wrote this query I don't know if it's correct or not.

"index=<my index> sourcetype=<my_sourcetype>  | eval TotalTraffic_GB = (sum(bytes)/1000000000)| stats sum(TotalTraffic_GB) as TotalGigaBytes ,
avg(TotalTraffic_GB) as AvgGigaBytes, max(TotalTraffic_GB) as MaxGigaBytes"

PLEASE CAN ANY ONE HELP ME ?? 

[ITWhisperer]

Assuming bytes is field containing one or more numerics, the search looks like it will work. How you tried it? Do you get an error?

[RJ2]

It works well ! without any error