The Tunnel Encapsulations OSPF Router Information
draft-ietf-ospf-encapsulation-cap-09

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OSPF Working Group                                            X. Xu, Ed.
Internet-Draft                                                    Huawei
Intended status: Standards Track                        B. Decraene, Ed.
Expires: April 12, 2018                                           Orange
                                                               R. Raszuk
                                                            Bloomberg LP
                                                            L. Contreras
                                                          Telefonica I+D
                                                                L. Jalil
                                                                 Verizon
                                                         October 9, 2017

           The Tunnel Encapsulations OSPF Router Information
                  draft-ietf-ospf-encapsulation-cap-09

Abstract

   Networks use tunnels for a variety of reasons.  A large variety of
   tunnel types are defined and the tunnel encapsulator router needs to
   select a type of tunnel which is supported by the tunnel decapsulator
   router.  This document defines how to advertise, in OSPF Router
   Information Link State Advertisement (LSAs), the list of tunnel
   encapsulations supported by the tunnel decapsulator.

Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119 [RFC2119].

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
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on April 12, 2018.

Xu, et al.               Expires April 12, 2018                 [Page 1]
Internet-Draft          Tunnel Encapsulations RI            October 2017

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
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Tunnel Encapsulations TLV . . . . . . . . . . . . . . . . . .   3
   4.  Tunnel Sub-TLV  . . . . . . . . . . . . . . . . . . . . . . .   3
   5.  Tunnel Parameter Sub-TLVs . . . . . . . . . . . . . . . . . .   4
     5.1.  Encapsulation Sub-TLV . . . . . . . . . . . . . . . . . .   5
     5.2.  Protocol Type Sub-TLV . . . . . . . . . . . . . . . . . .   5
     5.3.  Endpoint Sub-TLV  . . . . . . . . . . . . . . . . . . . .   5
     5.4.  Color Sub-TLV . . . . . . . . . . . . . . . . . . . . . .   6
     5.5.  Load-Balancing Block Sub-TLV  . . . . . . . . . . . . . .   6
     5.6.  IP QoS Field  . . . . . . . . . . . . . . . . . . . . . .   6
     5.7.  UDP Destination Port  . . . . . . . . . . . . . . . . . .   7
   6.  Operation . . . . . . . . . . . . . . . . . . . . . . . . . .   7
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   7
     7.1.  OSPF Router Information . . . . . . . . . . . . . . . . .   7
     7.2.  Tunnel Parameter Sub-TLVs Registry  . . . . . . . . . . .   7
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .   8
   9.  Contributors  . . . . . . . . . . . . . . . . . . . . . . . .   9
   10. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   9
   11. References  . . . . . . . . . . . . . . . . . . . . . . . . .   9
     11.1.  Normative References . . . . . . . . . . . . . . . . . .   9
     11.2.  Informative References . . . . . . . . . . . . . . . . .  10
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  10

1.  Introduction

   Networks use tunnels for a variety of reasons, such as:

   o  Partial deployment of IPv6 in IPv4 networks or IPv4 in IPv6
      networks as described in [RFC5565], where IPvx tunnels are used