IP Prefix Advertisement in EVPN
draft-ietf-bess-evpn-prefix-advertisement-08

Document Type Active Internet-Draft (bess WG)
Last updated 2017-10-20
Replaces draft-rabadan-l2vpn-evpn-prefix-advertisement
Stream IETF
Intended RFC status Proposed Standard
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Stream WG state WG Consensus: Waiting for Write-Up
Document shepherd Zhaohui Zhang
IESG IESG state I-D Exists
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Send notices to "Zhaohui Zhang" <zzhang@juniper.net>
BESS Workgroup                                           J. Rabadan, Ed.
Internet Draft                                             W. Henderickx
Intended status: Standards Track                                   Nokia

                                                                J. Drake
                                                                  W. Lin
                                                                 Juniper

                                                              A. Sajassi
                                                                   Cisco

Expires: April 23, 2018                                 October 20, 2017

                    IP Prefix Advertisement in EVPN
              draft-ietf-bess-evpn-prefix-advertisement-08

Abstract

   EVPN provides a flexible control plane that allows intra-subnet
   connectivity in an MPLS and/or NVO-based network. In some networks,
   there is also a need for a dynamic and efficient inter-subnet
   connectivity across Tenant Systems and End Devices that can be
   physical or virtual and do not necessarily participate in dynamic
   routing protocols. This document defines a new EVPN route type for
   the advertisement of IP Prefixes and explains some use-case examples
   where this new route-type is used.

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), its areas, and its working groups.  Note that
   other groups may also distribute working documents as Internet-
   Drafts.

   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
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   The list of current Internet-Drafts can be accessed at
   http://www.ietf.org/ietf/1id-abstracts.txt
 

Rabadan et al.           Expires April 23, 2018                 [Page 1]
Internet-Draft         EVPN Prefix Advertisement        October 20, 2017

   The list of Internet-Draft Shadow Directories can be accessed at
   http://www.ietf.org/shadow.html

   This Internet-Draft will expire on April 23, 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
   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. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2. Introduction and Problem Statement  . . . . . . . . . . . . . .  4
     2.1 Inter-Subnet Connectivity Requirements in Data Centers . . .  4
     2.2 The Requirement for a New EVPN Route Type  . . . . . . . . .  7
   3. The BGP EVPN IP Prefix Route  . . . . . . . . . . . . . . . . .  8
     3.1 IP Prefix Route Encoding . . . . . . . . . . . . . . . . . .  9
     3.2 Overlay Indexes and Recursive Lookup Resolution  . . . . . . 10
   4. Overlay Index Use-Cases . . . . . . . . . . . . . . . . . . . . 13
     4.1 TS IP Address Overlay Index Use-Case . . . . . . . . . . . . 13
     4.2 Floating IP Overlay Index Use-Case . . . . . . . . . . . . . 15
     4.3 Bump-in-the-Wire Use-Case  . . . . . . . . . . . . . . . . . 17
     4.4 IP-VRF-to-IP-VRF Model . . . . . . . . . . . . . . . . . . . 20
       4.4.1 Interface-less IP-VRF-to-IP-VRF Model  . . . . . . . . . 21
       4.4.2 Interface-ful IP-VRF-to-IP-VRF with SBD IRB  . . . . . . 24
       4.4.3 Interface-ful IP-VRF-to-IP-VRF with Unnumbered SBD IRB . 27
   5. Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . 30
   6. Conventions used in this document . . . . . . . . . . . . . . . 31
   7. Security Considerations . . . . . . . . . . . . . . . . . . . . 31
   8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 31
   9. References  . . . . . . . . . . . . . . . . . . . . . . . . . . 31
     9.1 Normative References . . . . . . . . . . . . . . . . . . . . 31
     9.2 Informative References . . . . . . . . . . . . . . . . . . . 31
   10. Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . . 32
   11. Contributors . . . . . . . . . . . . . . . . . . . . . . . . . 32
   12. Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . 32
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