350-001 · Question #93
Which NetFlow version should be used to collect accounting data for IPv6 traffic?
The correct answer is E. version 9. NetFlow versions 1, 5, 7, and 8 were all designed with fixed record formats that only support IPv4. NetFlow version 9 introduced a flexible, template-based export format (defined in RFC 3954), which allows it to support IPv6, MPLS, BGP next-hop fields, and other modern traffic…
Question
Which NetFlow version should be used to collect accounting data for IPv6 traffic?
Options
- Aversion 1
- Bversion 5
- Cversion 7
- Dversion 8
- Eversion 9
How the community answered
(36 responses)- A6% (2)
- D3% (1)
- E92% (33)
Explanation
NetFlow versions 1, 5, 7, and 8 were all designed with fixed record formats that only support IPv4. NetFlow version 9 introduced a flexible, template-based export format (defined in RFC 3954), which allows it to support IPv6, MPLS, BGP next-hop fields, and other modern traffic types. Because v9 uses templates to describe the structure of flow records, it can be extended to accommodate any IP version or protocol. It is the only version among the choices that can account for IPv6 traffic.
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