Inband Flow Analyzer
draft-kumar-ippm-ifa-02

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Last updated 2020-04-24
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Network Working Group                                           J. Kumar
Internet-Draft                                                S. Anubolu
Intended status: Experimental                                   J. Lemon
Expires: November 5, 2020                                       R. Manur
                                                           Broadcom Inc.
                                                             H. Holbrook
                                                         Arista Networks
                                                             A. Ghanwani
                                                                Dell EMC
                                                                  D. Cai
                                                                   H. Ou
                                                            AliBaba Inc.
                                                                   Y. Li
                                                                  Huawei
                                                                 X. Wang
                                        Fujian Ruijie Networks co., ltd.
                                                          April 24, 2020

                          Inband Flow Analyzer
                        draft-kumar-ippm-ifa-02

Abstract

   Inband Flow Analyzer (IFA) records flow specific information from an
   end station and/or switches across a network.  This document
   discusses the method to collect data on a per hop basis across a
   network and perform localized or end to end analytics operations on
   the data.  This document also describes a transport-agnostic header
   definition that may be used for tunneled and non-tunneled flows
   alike.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
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   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on November 5, 2020.

Kumar, et al.            Expires November 5, 2020                [Page 1]
Internet-Draft                     IFA                     February 2019

Copyright Notice

   Copyright (c) 2020 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   3
     1.2.  Scope . . . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.3.  Applicability . . . . . . . . . . . . . . . . . . . . . .   4
     1.4.  Motivation  . . . . . . . . . . . . . . . . . . . . . . .   4
   2.  Requirements  . . . . . . . . . . . . . . . . . . . . . . . .   4
     2.1.  Encapsulation Requirements  . . . . . . . . . . . . . . .   4
     2.2.  Operational Requirements  . . . . . . . . . . . . . . . .   5
     2.3.  Cost and Performance Requirements . . . . . . . . . . . .   6
   3.  IFA Operations  . . . . . . . . . . . . . . . . . . . . . . .   6
     3.1.  IFA Zones . . . . . . . . . . . . . . . . . . . . . . . .   8
     3.2.  IFA Function Nodes  . . . . . . . . . . . . . . . . . . .   8
       3.2.1.  Initiating Function Node  . . . . . . . . . . . . . .   9
       3.2.2.  Transit Function Node . . . . . . . . . . . . . . . .   9
       3.2.3.  Terminating Function Node . . . . . . . . . . . . . .   9
       3.2.4.  Metadata Fragmentation Function . . . . . . . . . . .   9
     3.3.  IFA Cloning, Truncation, and Drop . . . . . . . . . . . .  10
     3.4.  IFA Header  . . . . . . . . . . . . . . . . . . . . . . .  10
       3.4.1.  IFA Metadata Header . . . . . . . . . . . . . . . . .  13
       3.4.2.  IFA Checksum Header . . . . . . . . . . . . . . . . .  13
       3.4.3.  IFA Metadata Fragmentation (MF) Header  . . . . . . .  14
     3.5.  IFA Metadata  . . . . . . . . . . . . . . . . . . . . . .  15
       3.5.1.  Global Name Space (GNS) Identifier  . . . . . . . . .  15
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