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Network Flow Analysis is showing gaps in the graphs when viewing at one minute resolution.
Article ID: 133339
CA Network Flow Analysis (NetQos / NFA)
When viewing data at a one minute resolution, our graphs resemble this screenshot:
The router(s) in question is sending flows to two harvesters connected to the same NFA console. The console is consistently reassigning the router to each of the harvesters and the graphing becomes degraded.
Network Flow Analysis v. 9.3.6 and prior
The router's configuration needs to be edited so that it is only sending data to one harvester. You should also investigate the possibility of a 'cloner' forwarding flows to a second harvester unintentionally.