BGP Remote-Next-Hop
draft-vandevelde-idr-remote-next-hop-08

IDR                                                      G. Van de Velde
Internet-Draft                                                  K. Patel
Intended status: Standards Track                                  D. Rao
Expires: April 11, 2015                                    Cisco Systems
                                                               R. Raszuk
                                                            NTT MCL Inc.
                                                                 R. Bush
                                               Internet Initiative Japan
                                                         October 8, 2014

                          BGP Remote-Next-Hop
                draft-vandevelde-idr-remote-next-hop-08

Abstract

   The BGP Remote-Next-Hop attribute is an optional transitive attribute
   intended to facilitate automatic tunnelling across an AS for an NLRI
   in a given address family.  The attribute carries one or more tunnel
   end-points and associated tunnel encapsulation information for a
   NLRI.

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Van de Velde, et al.     Expires April 11, 2015                 [Page 1]
Internet-Draft                                              October 2014

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Requirements Language . . . . . . . . . . . . . . . . . . . .   3
   3.  Remote-Next-Hop Attribute . . . . . . . . . . . . . . . . . .   3
     3.1.  Tunnel Encapsulation attribute versus BGP Remote-Next-Hop
           attribute . . . . . . . . . . . . . . . . . . . . . . . .   4
   4.   BGP Remote-Next-Hop attribute TLV Format . . . . . . . . . .   4
   5.  Encapsulation sub-TLVs for virtual network overlays . . . . .   5
     5.1.  Encapsulation sub-TLV for VXLAN . . . . . . . . . . . . .   6
     5.2.  Encapsulation sub-TLV for NVGRE . . . . . . . . . . . . .   7
     5.3.  Encapsulation sub-TLV for GTP . . . . . . . . . . . . . .   8
     5.4.  Encapsulation for MPLS-in-GRE . . . . . . . . . . . . . .   8
   6.  Remote-Next-Hop Bestpath Considerations . . . . . . . . . . .   9
   7.  Securing Remote-Next-Hop  . . . . . . . . . . . . . . . . . .   9
     7.1.  Restrictions on Announcing of Remote-Next-Hop Attribute .  10
     7.2.  Restrictions on Originating of Remote-Next-Hop Attribute   10
   8.  Multiple tunnel endpoint addresses  . . . . . . . . . . . . .  11
   9.  Attribute error handling  . . . . . . . . . . . . . . . . . .  11
   10. BGP speakers that do not support BGP Remote-Next-Hop
       attribute . . . . . . . . . . . . . . . . . . . . . . . . . .  11
   11. Use Case scenarios  . . . . . . . . . . . . . . . . . . . . .  11
     11.1.  Stateless user-plane architecture for virtualized EPC
            (vEPC) . . . . . . . . . . . . . . . . . . . . . . . . .  12
     11.2.  Stateless User-plane Architecture for virtual Packet
            Edge . . . . . . . . . . . . . . . . . . . . . . . . . .  12
     11.3.  Dynamic Network Overlay Infrastructure . . . . . . . . .  12
     11.4.  Simple VPN solution using Multi-point Security
            Association  . . . . . . . . . . . . . . . . . . . . . .  12
   12. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  13
   13. Security Considerations . . . . . . . . . . . . . . . . . . .  13
   14. Privacy Considerations  . . . . . . . . . . . . . . . . . . .  14
   15. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  14