IDR Working Group E. Jasinska
Internet-Draft Microsoft Corporation
Intended status: Standards Track N. Hilliard
Expires: August 29, 2013 INEX
R. Raszuk
NTT MCL Inc.
N. Bakker
AMS-IX B.V.
February 25, 2013
Internet Exchange Route Server
draft-ietf-idr-ix-bgp-route-server-02
Abstract
This document outlines a specification for multilateral
interconnections at Internet exchange points (IXPs). Multilateral
interconnection is a method of exchanging routing information between
three or more exterior BGP speakers using a single intermediate
broker system, referred to as a route server. Route servers are
typically used on shared access media networks, such as Internet
exchange points (IXPs), to facilitate simplified interconnection
between multiple Internet routers.
Status of this Memo
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Copyright Notice
Copyright (c) 2013 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 to Multilateral Interconnection . . . . . . . . . 3
1.1. Notational Conventions . . . . . . . . . . . . . . . . . . 3
2. Technical Considerations for Route Server Implementations . . 4
2.1. Client UPDATE Messages . . . . . . . . . . . . . . . . . . 4
2.2. Attribute Transparency . . . . . . . . . . . . . . . . . . 4
2.2.1. NEXT_HOP Attribute . . . . . . . . . . . . . . . . . . 4
2.2.2. AS_PATH Attribute . . . . . . . . . . . . . . . . . . 4
2.2.3. MULTI_EXIT_DISC Attribute . . . . . . . . . . . . . . 5
2.2.4. Communities Attributes . . . . . . . . . . . . . . . . 5
2.3. Per-Client Policy Control in Multilateral
Interconnection . . . . . . . . . . . . . . . . . . . . . 5
2.3.1. Path Hiding on a Route Server . . . . . . . . . . . . 6
2.3.2. Mitigation of Path Hiding . . . . . . . . . . . . . . 7
2.3.2.1. Multiple Route Server RIBs . . . . . . . . . . . . 7
2.3.2.2. Advertising Multiple Paths . . . . . . . . . . . . 7
2.3.3. Implementation Recommendations . . . . . . . . . . . . 8
3. Security Considerations . . . . . . . . . . . . . . . . . . . 8
4. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 9
5. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 9
6. References . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6.1. Normative References . . . . . . . . . . . . . . . . . . . 9
6.2. Informative References . . . . . . . . . . . . . . . . . . 9
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 10
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1. Introduction to Multilateral Interconnection
Internet exchange points (IXPs) provide IP data interconnection
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