BGPSec Considerations for AS Migration
draft-ietf-sidr-as-migration-06

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Last updated 2017-02-07 (latest revision 2016-12-07)
Replaces draft-george-sidr-as-migration
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SIDR                                                           W. George
Internet-Draft
Intended status: Standards Track                               S. Murphy
Expires: June 10, 2017                   SPARTA, Inc., a Parsons Company
                                                        December 7, 2016

                 BGPSec Considerations for AS Migration
                    draft-ietf-sidr-as-migration-06

Abstract

   This document discusses considerations and methods for supporting and
   securing a common method for AS-Migration within the BGPSec protocol.

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
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   This Internet-Draft will expire on June 10, 2017.

Copyright Notice

   Copyright (c) 2016 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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   described in the Simplified BSD License.

George & Murphy           Expires June 10, 2017                 [Page 1]
Internet-Draft             BGPSec-as-migration             December 2016

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   2
     1.2.  Documentation note  . . . . . . . . . . . . . . . . . . .   3
   2.  General Scenario  . . . . . . . . . . . . . . . . . . . . . .   3
   3.  RPKI Considerations . . . . . . . . . . . . . . . . . . . . .   3
     3.1.  Origin Validation . . . . . . . . . . . . . . . . . . . .   4
     3.2.  Path Validation . . . . . . . . . . . . . . . . . . . . .   5
       3.2.1.  Outbound announcements (PE-->CE)  . . . . . . . . . .   5
       3.2.2.  Inbound announcements (CE-->PE) . . . . . . . . . . .   6
   4.  Requirements  . . . . . . . . . . . . . . . . . . . . . . . .   6
   5.  Solution  . . . . . . . . . . . . . . . . . . . . . . . . . .   6
     5.1.  Outbound (PE->CE) . . . . . . . . . . . . . . . . . . . .   8
     5.2.  Inbound (CE->PE)  . . . . . . . . . . . . . . . . . . . .   8
     5.3.  Other considerations  . . . . . . . . . . . . . . . . . .   9
     5.4.  Example . . . . . . . . . . . . . . . . . . . . . . . . .   9
   6.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  13
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  14
   8.  Note for RFC Editor . . . . . . . . . . . . . . . . . . . . .  14
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .  14
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  14
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  14
     10.2.  Informative References . . . . . . . . . . . . . . . . .  15
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  15

1.  Introduction

   A method of managing a BGP Autonomous System Number (ASN) migration
   is described in RFC7705 [RFC7705].  Since it concerns the handling of
   AS_PATH attributes, it is necessary to ensure that the process and
   features are properly supported in BGPSec
   [I-D.ietf-sidr-bgpsec-protocol], because BGPSec is explicitly
   designed to protect against changes in the BGP AS_PATH, whether by
   choice, by misconfiguration, or by malicious intent.  It is critical
   that the BGPSec protocol framework is able to support this
   operationally necessary tool without creating an unacceptable
   security risk or exploit in the process.

1.1.  Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119 [RFC2119].
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