1. IPv6 Flow

2. IPv6 Flow Options Netflow v9 (aka cflow/jflow) Sflow IPFix

3. Common Netflow versions Netflow v5 - Fixed record format, no support for IPv6 –Supported by Cisco, Juniper, Alcatel Netflow v9 - Variable record format/template, supports IPv6 –Supported by Cisco and Juniper although Juniper doesn’t yet support IPv6 traffic reporting in cflowd v9

4. Cisco IPv6 Netflow v9 Configuration General Configuration –ipv6 flow-export version 9 –Ipv6 flow-export destination –Ipv6 flow-export template refresh-rate –Ipv6 flow-export template timeout

5. Cisco IPv6 Netflow Interface specific commands –Ipv6 flow ingress –Ipv6 flow egress

6. CLI Management Commands Show ip cache flow Clear ip flow stats

7. IPFix IETF working group effort Improves on Cisco’s Netflow v9 See: http://www.nanog.org/meetings/nanog4 1/presentations/nanog41-ipfix.pdf

8. Sflow Includes packet header information Used by Extreme, Force10, Foundry

9. Things to Watch For Simultaneous IPv6 and flow support Impact of IPv6 flow on router or switch performance Corner case behavior: –MPLS –Multicast –Dropped packets