A Scalable and Topology-Aware MPLS Dataplane Monitoring System
draft-ietf-spring-oam-usecase-09

Document Type Active Internet-Draft (spring WG)
Last updated 2017-10-10 (latest revision 2017-07-25)
Replaces draft-geib-segment-routing-oam-usecase, draft-geib-spring-oam-usecase
Stream IETF
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spring                                                      R. Geib, Ed.
Internet-Draft                                          Deutsche Telekom
Intended status: Informational                               C. Filsfils
Expires: January 26, 2018                              C. Pignataro, Ed.
                                                                N. Kumar
                                                     Cisco Systems, Inc.
                                                           July 25, 2017

     A Scalable and Topology-Aware MPLS Dataplane Monitoring System
                    draft-ietf-spring-oam-usecase-09

Abstract

   This document describes features of a path monitoring system and
   related use cases.  Segment based routing enables a scalable and
   simple method to monitor data plane liveliness of the complete set of
   paths belonging to a single domain.  The MPLS monitoring system adds
   features to the traditional MPLS Ping and LSP Trace, in a very
   complementary way.  MPLS topology awareness reduces management and
   control plane involvement of OAM measurements while enabling new OAM
   features.

Status of This Memo

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

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   This Internet-Draft will expire on January 26, 2018.

Copyright Notice

   Copyright (c) 2017 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
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of

Geib, et al.            Expires January 26, 2018                [Page 1]
Internet-Draft          SR MPLS monitoring system              July 2017

   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology and Acronyms  . . . . . . . . . . . . . . . . . .   5
     2.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   5
     2.2.  Acronyms  . . . . . . . . . . . . . . . . . . . . . . . .   5
   3.  An MPLS Topology-Aware Path Monitoring System . . . . . . . .   6
   4.  SR-based Path Monitoring Use Case Illustration  . . . . . . .   7
     4.1.  Use Case 1 - LSP Dataplane Monitoring . . . . . . . . . .   7
     4.2.  Use Case 2 - Monitoring a Remote Bundle . . . . . . . . .  10
     4.3.  Use Case 3 - Fault Localization . . . . . . . . . . . . .  11
   5.  Path Trace and Failure Notification . . . . . . . . . . . . .  11
   6.  Applying SR to Monitoring non-SR based LSPs (LDP and possibly
       RSVP-TE)  . . . . . . . . . . . . . . . . . . . . . . . . . .  12
   7.  PMS Monitoring of Different Segment ID Types  . . . . . . . .  13
   8.  Connectivity Verification Using PMS . . . . . . . . . . . . .  13
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  14
   10. Security Considerations . . . . . . . . . . . . . . . . . . .  14
   11. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  15
   12. References  . . . . . . . . . . . . . . . . . . . . . . . . .  16
     12.1.  Normative References . . . . . . . . . . . . . . . . . .  16
     12.2.  Informative References . . . . . . . . . . . . . . . . .  16
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  17

1.  Introduction

   Network operator need to be able to monitor the forwarding paths used
   to transport user packets.  Monitoring packets are expected to be
   forwarded in dataplane in a similar way as user packets.  Segment
   Routing enables forwarding of packets along pre-defined paths and
   segments and thus a Segment Routed monitoring packet can stay in
   dataplane while passing along one or more segments to be monitored.

   This document describes a system using MPLS data plane path
   monitoring capabilities.  The use cases introduced here are limited
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