Methods for Detection and Mitigation of BGP Route Leaks
draft-ietf-grow-route-leak-detection-mitigation-04

Document Type Active Internet-Draft (grow WG)
Authors Kotikalapudi Sriram  , Alexander Azimov 
Last updated 2020-10-26
Replaces draft-ietf-idr-route-leak-detection-mitigation
Stream Internent Engineering Task Force (IETF)
Intended RFC status (None)
Formats plain text xml pdf htmlized (tools) htmlized bibtex
Stream WG state WG Document
Document shepherd No shepherd assigned
IESG IESG state I-D Exists
Consensus Boilerplate Unknown
Telechat date
Responsible AD (None)
Send notices to (None)
IDR and SIDR                                              K. Sriram, Ed.
Internet-Draft                                                  USA NIST
Intended status: Standards Track                          A. Azimov, Ed.
Expires: April 29, 2021                                           Yandex
                                                        October 26, 2020

        Methods for Detection and Mitigation of BGP Route Leaks
           draft-ietf-grow-route-leak-detection-mitigation-04

Abstract

   Problem definition for route leaks and enumeration of types of route
   leaks are provided in RFC 7908.  This document describes a new well-
   known Large Community that provides a way for route-leak prevention,
   detection, and mitigation.  The configuration process for this
   Community can be automated with the methodology for setting BGP roles
   that is described in ietf-idr-bgp-open-policy draft.

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
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   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
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on April 29, 2021.

Copyright Notice

   Copyright (c) 2020 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
   (https://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

Sriram & Azimov          Expires April 29, 2021                 [Page 1]
Internet-Draft     Route-Leak Detection and Mitigation      October 2020

   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   3
   2.  Peering Relationships . . . . . . . . . . . . . . . . . . . .   3
   3.  Community vs Attribute  . . . . . . . . . . . . . . . . . . .   3
   4.  Down Only Community . . . . . . . . . . . . . . . . . . . . .   4
     4.1.  Route-Leak Mitigation . . . . . . . . . . . . . . . . . .   5
     4.2.  Only Marking  . . . . . . . . . . . . . . . . . . . . . .   6
   5.  Implementation Considerations . . . . . . . . . . . . . . . .   7
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   7
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .   8
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   8
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .   8
     8.2.  Informative References  . . . . . . . . . . . . . . . . .   8
   Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . .   9
   Contributors  . . . . . . . . . . . . . . . . . . . . . . . . . .   9
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  10

1.  Introduction

   RFC 7908 [RFC7908] provides a definition of the route-leak problem
   and enumerates several types of route leaks.  For this document, the
   definition that is applied is that a route leak occurs when a route
   received from a transit provider or a lateral peer is forwarded
   (against commonly used policy) to another transit provider or a
   lateral peer.  The commonly used policy is that a route received from
   a transit provider or a lateral peer MAY be forwarded only to
   customers.

   This document describes a solution for prevention, detection and
   mitigation of route leaks which is based on conveying route-leak
   detection information in a transitive well-known BGP Large Community
   [RFC8092].  The configuration process for the Large Community MUST be
   defined according to peering relations between ISPs.  This process
   can be automated with the methodology for setting BGP roles that is
   described in [I-D.ietf-idr-bgp-open-policy].

   The techniques described in this document can be incrementally
   deployed.  If a pair of ISPs and/or Internet Exchanges (IXes) deploy
   the proposed techniques, then they would detect and mitigate any
   route leaks that occur in an AS path between them even when other
   ASes in the path are not upgraded.

Sriram & Azimov          Expires April 29, 2021                 [Page 2]
Show full document text