BIER-TE Ping and Trace
draft-chen-bier-te-ping-01

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Last updated 2016-10-08
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Networking Working Group                                       Ran. Chen
Internet-Draft                                              Shaofu. Peng
Intended status: Standards Track                         ZTE Corporation
Expires: April 10, 2017                                 October 07, 2016

                         BIER-TE Ping and Trace
                       draft-chen-bier-te-ping-01

Abstract

   Bit Index Explicit Replication (BIER)-TE shares architecture and
   packet formats with BIER as described in
   [I-D.ietf-bier-architecture].  BIER-TE forwards and replicates
   packets based on a BitString in the packet header, but every
   BitPosition of the BitString of a BIER-TE packet indicates one or
   more adjacencies.

   This document describes the mechanism and basic BIER-TE OAM packet
   format that can be used to perform Ping and Traceroute on BIER-TE
   network.

Status of This Memo

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   This Internet-Draft will expire on April 10, 2017.

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   Copyright (c) 2016 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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   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents

Chen & Peng              Expires April 10, 2017                 [Page 1]
Internet-Draft           BIER-TE Ping and Trace             October 2016

   carefully, as they describe your rights and restrictions with respect
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   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Conventions used in this document . . . . . . . . . . . . . .   3
   3.  BIER-TE OAM Packet format . . . . . . . . . . . . . . . . . .   3
     3.1.  Target FEC Stack  . . . . . . . . . . . . . . . . . . . .   5
       3.1.1.  BIER-TE forward_connected TLV . . . . . . . . . . . .   6
       3.1.2.  BIER-TE local_decap TLV . . . . . . . . . . . . . . .   7
       3.1.3.  BIER-TE forward_routed TLV  . . . . . . . . . . . . .   7
     3.2.  Downstream Mapping TLV  . . . . . . . . . . . . . . . . .   8
       3.2.1.  Downstream Mapping Sub-TLVs . . . . . . . . . . . . .   8
         3.2.1.1.  Multipath Entropy Data  . . . . . . . . . . . . .   9
         3.2.1.2.  Egress BitString sub-TLV  . . . . . . . . . . . .   9
         3.2.1.3.  FEC Stack Change Sub-TLV  . . . . . . . . . . . .   9
     3.3.  Original SI-BitString TLV . . . . . . . . . . . . . . . .  10
     3.4.  Target SI-BitString TLV . . . . . . . . . . . . . . . . .  11
     3.5.  Responder BFER TLV  . . . . . . . . . . . . . . . . . . .  11
     3.6.  Responder BFR TLV . . . . . . . . . . . . . . . . . . . .  11
     3.7.  Reply-To TLV  . . . . . . . . . . . . . . . . . . . . . .  11
   4.  BIER-TE OAM Processing  . . . . . . . . . . . . . . . . . . .  11
     4.1.  Sending BIER Echo Request . . . . . . . . . . . . . . . .  11
     4.2.  Receiving BIER Echo Request . . . . . . . . . . . . . . .  12
     4.3.  Sending Echo Reply  . . . . . . . . . . . . . . . . . . .  14
     4.4.  Receiving Echo Reply  . . . . . . . . . . . . . . . . . .  15
   5.  Security Consideration  . . . . . . . . . . . . . . . . . . .  15
   6.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  15
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  15
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  15
     8.1.  Normative references  . . . . . . . . . . . . . . . . . .  15
     8.2.  Informative references  . . . . . . . . . . . . . . . . .  16
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  17

1.  Introduction

   [I-D.ietf-bier-architecture] introduces and explains BIER-TE
   architecture that provides optimal multicast forwarding through a
   "BIER-TE domain" without requiring intermediate routers to maintain
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