Hi,
My NTA is not showing true data in graph. For example, In netflow source table, Interface 's value is so different from interface detail graph. l think , interface graphs not showing true netflow value in a graph. What is your advice?
Please have a look at Re: Ingress vs. Egress traffic on Inside and Outside interfaces . Maybe it would help you.
One thing that might cause this is a difference in the timescales of Netflow reporting vs. interface polling.
We ran into this once on interfaces that had a lot of long-lived flows (e.g. tunnels) and we had left the Netflow active flow cache timeout at its default value, which on our devices was 30 minutes. So a signficant portion of the Netflow traffic was being reported in bursts at 30 minute intervals.
This article may be useful, as well:Bandwidth and Traffic: Hunting Hogs
jreves
