On top of the traditional flow record of v5, it was an enhancement to support different technologies such as Multi-cast, IPSec, and Multi Protocol Label Switching (MPLS). These enhancements are mostly due to the support for templates which allow the content of the flows to change based on the needs of the user. For example, due to the routers ability to perform DPI, layer 7 application details can be exported through the use of NBAR. Also, Voice over IP and video traffic metrics such as jitter, packet loss and round trip time can also be exported. It also added IPv6 support as well as egress flow collection. V9 is supported in IOS 12.4 and above.