Secure EVPN
draft-sajassi-bess-secure-evpn-00

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Last updated 2018-10-21
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BESS Workgroup                                           A. Sajassi, Ed.
INTERNET-DRAFT                                               A. Banerjee
Intended Status: Standards Track                               S. Thoria
                                                               D. Carrel
                                                                 B. Weis
                                                                   Cisco
                                                                        
Expires: May 20, 2019                                   October 20, 2018

                              Secure EVPN 
                   draft-sajassi-bess-secure-evpn-00 

Abstract

   The applications of EVPN-based solutions ([RFC7432] and [RFC8365])
   have become pervasive in Data Center, Service Provider, and
   Enterprise segments. It is being used for fabric overlays and inter-
   site connectivity in the Data Center market segment, for Layer-2,
   Layer-3, and IRB VPN services in the Service Provider market segment,
   and for fabric overlay and WAN connectivity in Enterprise networks.
   For Data Center and Enterprise applications, there is a need to
   provide inter-site and WAN connectivity over public Internet in a
   secured manner with same level of privacy, integrity, and
   authentication for tenant's traffic as IPsec tunneling using IKEv2.
   This document presents a solution where BGP point-to-multipoint
   signaling is leveraged for key and policy exchange among PE devices
   to create private pair-wise IPsec Security Associations without IKEv2
   point-to-point signaling or any other direct peer-to-peer session
   establishment messages.     

Status of this Memo

   This Internet-Draft is submitted to IETF in full conformance with the
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   Internet-Drafts are working documents of the Internet Engineering
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Sajassi et al.            Expires May 20, 2019                  [Page 1]
INTERNET DRAFT                Secure EVPN               October 20, 2018

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Copyright and License Notice

   Copyright (c) 2014 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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Table of Contents

   1  Introduction  . . . . . . . . . . . . . . . . . . . . . . . . .  6
   2 Requirements . . . . . . . . . . . . . . . . . . . . . . . . . .  7
     2.1 Tenant's Layer-2 and Layer-3 data & control traffic  . . . .  7
     2.2 Tenant's Unicast & Multicast Data Protection . . . . . . . .  7
     2.3 P2MP Signaling for SA setup and Maintenance  . . . . . . . .  7
     2.3 Granularity of Security Association Tunnels  . . . . . . . .  7
     2.4 Support for Policy and DH-Group List . . . . . . . . . . . .  8
   3  Solution Description  . . . . . . . . . . . . . . . . . . . . .  8
     3.1  Distribution of Public Keys and Policies  . . . . . . . . .  9
       3.1.1  Minimum Set . . . . . . . . . . . . . . . . . . . . . .  9
       3.1.2  Single Policy . . . . . . . . . . . . . . . . . . . . . 10
       3.1.3  Policy-list & DH-group-list . . . . . . . . . . . . . . 10
     3.2  Initial IPsec SAs Generation  . . . . . . . . . . . . . . . 11
     3.3  Re-Keying . . . . . . . . . . . . . . . . . . . . . . . . . 11
     3.4  IPsec Databases . . . . . . . . . . . . . . . . . . . . . . 11
   4 Encapsulation  . . . . . . . . . . . . . . . . . . . . . . . . . 12
     4.1 Standard ESP Encapsulation . . . . . . . . . . . . . . . . . 12
     4.2 ESP Encapsulation within UDP packet  . . . . . . . . . . . . 13
   5 BGP Encoding . . . . . . . . . . . . . . . . . . . . . . . . . . 14
     5.1 ESP Notify Sub-TLV . . . . . . . . . . . . . . . . . . . . . 14
     5.2 ESP Key Exchange Sub-TLV . . . . . . . . . . . . . . . . . . 15
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