Link State Over Ethernet
draft-ietf-lsvr-lsoe-01

Document Type Active Internet-Draft (lsvr WG)
Last updated 2019-03-18 (latest revision 2019-02-17)
Replaces draft-ymbk-lsvr-lsoe
Stream IETF
Intended RFC status (None)
Formats plain text pdf html bibtex
Stream WG state WG Document
Document shepherd No shepherd assigned
IESG IESG state I-D Exists
Consensus Boilerplate Unknown
Telechat date
Responsible AD (None)
Send notices to (None)
Network Working Group                                            R. Bush
Internet-Draft                                              Arrcus & IIJ
Intended status: Standards Track                              R. Austein
Expires: August 22, 2019                                        K. Patel
                                                                  Arrcus
                                                       February 18, 2019

                        Link State Over Ethernet
                        draft-ietf-lsvr-lsoe-01

Abstract

   Used in Massive Data Centers (MDCs), BGP-SPF and similar protocols
   need link neighbor discovery, link encapsulation data, and Layer 2
   liveness.  The Link State Over Ethernet protocol provides link
   discovery, exchanges supported encapsulations (IPv4, IPv6, ...),
   discovers encapsulation addresses (Layer 3 / MPLS identifiers) over
   raw Ethernet, and provides layer 2 liveness checking.  The interface
   data are pushed directly to a BGP API (for LSVR), obviating the need
   for centralized topology distribution architectures.  This protocol
   is intended to be more widely applicable to other upper layer routing
   protocols which need link discovery and characterisation.

Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
   "OPTIONAL" in this document are to be interpreted as described in
   BCP 14 [RFC2119] [RFC8174] when, and only when, they appear in all
   capitals, as shown here.

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 August 22, 2019.

Bush, et al.             Expires August 22, 2019                [Page 1]
Internet-Draft          Link State Over Ethernet           February 2019

Copyright Notice

   Copyright (c) 2019 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
   (https://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  Background  . . . . . . . . . . . . . . . . . . . . . . . . .   4
   4.  Top Level Overview  . . . . . . . . . . . . . . . . . . . . .   5
   5.  Ethernet to Ethernet Protocols  . . . . . . . . . . . . . . .   6
     5.1.  Inter-Link Ether Protocol Overview  . . . . . . . . . . .   7
   6.  Transport Layer . . . . . . . . . . . . . . . . . . . . . . .   8
   7.  The Checksum  . . . . . . . . . . . . . . . . . . . . . . . .   9
   8.  TLV PDUs  . . . . . . . . . . . . . . . . . . . . . . . . . .  11
   9.  HELLO . . . . . . . . . . . . . . . . . . . . . . . . . . . .  11
   10. OPEN  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  12
   11. ACK . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  14
     11.1.  Retransmission . . . . . . . . . . . . . . . . . . . . .  15
   12. The Encapsulations  . . . . . . . . . . . . . . . . . . . . .  15
     12.1.  The Encapsulation PDU Skeleton . . . . . . . . . . . . .  15
     12.2.  Prim/Loop Flags  . . . . . . . . . . . . . . . . . . . .  17
     12.3.  IPv4 Encapsulation . . . . . . . . . . . . . . . . . . .  17
     12.4.  IPv6 Encapsulation . . . . . . . . . . . . . . . . . . .  17
     12.5.  MPLS Label List  . . . . . . . . . . . . . . . . . . . .  18
     12.6.  MPLS IPv4 Encapsulation  . . . . . . . . . . . . . . . .  18
     12.7.  MPLS IPv6 Encapsulation  . . . . . . . . . . . . . . . .  19
   13. KEEPALIVE - Layer 2 Liveness  . . . . . . . . . . . . . . . .  19
   14. VENDOR - Vendor Extensions  . . . . . . . . . . . . . . . . .  20
   15. Layers 2.5 and 3 Liveness . . . . . . . . . . . . . . . . . .  20
   16. The North/South Protocol  . . . . . . . . . . . . . . . . . .  21
     16.1.  Use BGP-LS as Much as Possible . . . . . . . . . . . . .  21
Show full document text