BGP Remote-Next-Hop
draft-vandevelde-idr-remote-next-hop-05

IDR                                                      G. Van de Velde
Internet-Draft                                                  K. Patel
Intended status: Standards Track                                  D. Rao
Expires: July 21, 2014                                     Cisco Systems
                                                               R. Raszuk
                                                            NTT MCL Inc.
                                                                 R. Bush
                                               Internet Initiative Japan
                                                        January 17, 2014

                          BGP Remote-Next-Hop
                draft-vandevelde-idr-remote-next-hop-05

Abstract

   The BGP Remote-Next-Hop is a new optional transitive attribute
   intended to facilitate automatic tunneling across an AS on a per
   address family basis.  The attribute carries one or more tunnel end-
   points for a NLRI.  Additionally, tunnel encapsulation information is
   communicated to successfully setup these tunnels.

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Van de Velde, et al.      Expires July 21, 2014                 [Page 1]
Internet-Draft                                              January 2014

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Requirements Language . . . . . . . . . . . . . . . . . . . .   3
   3.  Tunnel Encapsulation attribute versus BGP Remote-Next-Hop
       attribute . . . . . . . . . . . . . . . . . . . . . . . . . .   3
   4.   BGP Remote-Next-Hop attribute TLV Format . . . . . . . . . .   4
     4.1.  Encapsulation sub-TLVs for virtual network overlays . . .   5
       4.1.1.  Encapsulation sub-TLV for VXLAN . . . . . . . . . . .   6
       4.1.2.  Encapsulation sub-TLV for NVGRE . . . . . . . . . . .   7
       4.1.3.  Encapsulation sub-TLV for GTP . . . . . . . . . . . .   8
   5.  Use Case scenarios  . . . . . . . . . . . . . . . . . . . . .   8
     5.1.  Stateless user-plane architecture for virtualized EPC
           (vEPC)  . . . . . . . . . . . . . . . . . . . . . . . . .   8
     5.2.  Multi-homing for IPv6 . . . . . . . . . . . . . . . . . .   8
     5.3.  Dynamic Network Overlay Infrastructure  . . . . . . . . .   9
     5.4.  The Tunnel end-point is NOT the originating BGP speaker .   9
     5.5.  Networks that do not support BGP Remote-Next-Hop
           attribute . . . . . . . . . . . . . . . . . . . . . . . .   9
     5.6.  Networks that do support BGP Remote-Next-Hop attribute  .   9
   6.  BGP Remote-Next-Hop Community . . . . . . . . . . . . . . . .  10
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  10
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  10
     8.1.  Protecting the validity of the BGP Remote-Next-Hop
           attribute . . . . . . . . . . . . . . . . . . . . . . . .  10
   9.  Privacy Considerations  . . . . . . . . . . . . . . . . . . .  11
   10. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  11
   11. Change Log  . . . . . . . . . . . . . . . . . . . . . . . . .  11
   12. References  . . . . . . . . . . . . . . . . . . . . . . . . .  11
     12.1.  Normative References . . . . . . . . . . . . . . . . . .  11
     12.2.  Informative References . . . . . . . . . . . . . . . . .  12
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  12