https://app.kbone.net/vault/rfc/docid/7894
RFC7270: Cisco-Specific Information Elements Reused in IP Flow Information Export (IPFIX)
Internet Engineering Task Force (IETF) A. Yourtchenko Request for Comments: 7270 P. Aitken Category: Informational B. Claise ISSN: 2070-1721 Cisco Systems, Inc. ...