Question

A service provider engineer configures Flexible NetFlow with IPFIX export on an IOS XR router to monitor customer traffic. Long-lived TCP sessions (bulk file transfers lasting several minutes) are underrepresented in the collector's reports, while the collector shows expected records for short flows. The engineer wants long-lived flows to be periodically reported to the collector while they are still active, without waiting for the session to terminate. Which flow monitor cache timer adjustment achieves this?

Accepted Answer

Lower the active flow cache timeout so ongoing flows are exported at that interval even while still active

Answer

Lower the inactive flow cache timeout so idle flows are flushed and re-exported faster

Answer

Increase the flow cache size to prevent premature eviction of long-lived flows

Answer

Change the export protocol from IPFIX to NetFlow v9 to support ongoing flow reporting