I'm trying to track down a flaw in the logic of one of my reports, and hope I'm missing something simple. I have a total of 10 interfaces on a single Juniper device that I'm polling for detailed statistics every 1 minute. Using these statistics, I've created both a chart and a report that shows the max transmit bps values for the combined values of these interfaces. I'm running into a problem between the data sum shown between my chart and the report, and I'm not sure why.
Here's a sample of the output from the chart. The peak transmit bps sum for the 10 interfaces over the last 7 days (zoomed in on the screenshot below) shows as 9.2 Gbps, which I believe to be correct. Each interface returns its individual peak transmit bps value, and I then have the "sum" property in the chart add them together:
I've built out a report in the interest of automating this process. The report has been configured to look for a custom property that I've assigned to all 10 interfaces, and then add the returned max transmit bps values together. I've also experimented with using the "Specific objects (static selection)" option and manually selecting all 10 interfaces, which returns the same data as using the custom property method.
Here's how my data table is set up. I'm pulling in the interfaces using the custom property of "Report_Filter", and confirmed that all 10 interfaces have the appropriate string entered so that they're found when the report polls for data. I then have the "Peak Transmit bps" value set to show its data aggregation as "sum" and to show only the top 10 records. Finally, my sample interval is set to show all of values in the database. I'm polling detailed statistics every 1 minute, so the report takes a few moments to run.
Lastly, here's the output of the report. The value shown for the peak transmit bps sum value of the 10 interfaces doesn't reflect the 9.2 Gbps value as seen on the chart, and instead shows a value of 7.05 Gbps on 6/30 at 12:04 AM. The same data point at 12:04 on my chart shows a value of 7.7 Gbps at 12:04 AM and 8.8 Gbps at 12:05 AM. Something isn't right with the way I've set up the report, and I greatly appreciate any help in finding the solution.
