
Explanation:

Explanation:
The Version 1 format was the initially released version. Do not use the Version 1 format unless you are using a legacy collection system that requires it. Use Version 9 or Version 5 export format.
Version 5 export format is suitable only for the main cache; it cannot be expanded to support new features.
Version 8 export format is available only for aggregation caches; it cannot be expanded to support new features.
Reference: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/netflow/configuration/15-mt/nf-15-mt-book
/cfgnflow-data-expt.html