draft-ietf-idr-add-paths-guidelines-05.txt   draft-ietf-idr-add-paths-guidelines-06.txt 
Network Working Group J. Uttaro Network Working Group J. Uttaro
Internet Draft AT&T Internet Draft AT&T
Expires: Dec 21, 2013 P. Francois Expires: July 27, 2014 P. Francois
Intended status: Standards Track IMDEA Networks Intended status: Standards Track IMDEA Networks
June 21, 2013 R. Fragassi January 27, 2014 R. Fragassi
A. Simpson A. Simpson
Alcatel-Lucent Alcatel-Lucent
K. Patel K. Patel
Cisco Systems Cisco Systems
P. Mohapatra
Cumulus Networks
Best Practices for Advertisement of Multiple Paths in IBGP Best Practices for Advertisement of Multiple Paths in IBGP
draft-ietf-idr-add-paths-guidelines-05.txt draft-ietf-idr-add-paths-guidelines-06.txt
Status of this Memo Status of this Memo
This Internet-Draft is submitted in full conformance with the This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79. provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF), its areas, and its working groups. Note that Task Force (IETF), its areas, and its working groups. Note that
other groups may also distribute working documents as Internet- other groups may also distribute working documents as Internet-
Drafts. Drafts.
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and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
The list of current Internet-Drafts can be accessed at The list of current Internet-Drafts can be accessed at
http://www.ietf.org/ietf/1id-abstracts.txt http://www.ietf.org/ietf/1id-abstracts.txt
The list of Internet-Draft Shadow Directories can be accessed at The list of Internet-Draft Shadow Directories can be accessed at
http://www.ietf.org/shadow.html http://www.ietf.org/shadow.html
This Internet-Draft will expire on Dec 21, 2013. This Internet-Draft will expire on Jul 27, 2014.
Copyright Notice Copyright Notice
Copyright (c) 2012 IETF Trust and the persons identified as the Copyright (c) 2012 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of (http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents publication of this document. Please review these documents
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5. Deployment Considerations.....................................15 5. Deployment Considerations.....................................15
5.1. Introducing Add-Paths into an Existing Network...........15 5.1. Introducing Add-Paths into an Existing Network...........15
5.2. Scalability Considerations...............................18 5.2. Scalability Considerations...............................18
5.3. Routing Consistency Considerations.......................18 5.3. Routing Consistency Considerations.......................18
5.4. Consistency between Advertised Paths and Forwarding Paths19 5.4. Consistency between Advertised Paths and Forwarding Paths19
5.5. Routing Churn............................................20 5.5. Routing Churn............................................20
6. Security Considerations.......................................20 6. Security Considerations.......................................20
7. Acknowledgments...............................................20 7. Acknowledgments...............................................20
8. Contributors..................................................20 8. Contributors..................................................20
9. IANA Considerations...........................................20 9. IANA Considerations...........................................20
10. References...................................................21 10. References...................................................20
10.1. Normative References....................................21 10.1. Normative References....................................20
10.2. Informative References..................................21 10.2. Informative References..................................21
Appendix A. Other Path Selection Modes...........................22 Appendix A. Other Path Selection Modes...........................22
A.1. Advertise Neighbor-AS Group Best Path....................22 A.1. Advertise Neighbor-AS Group Best Path....................22
A.2. Best LocPref/Second LocPref..............................22 A.2. Best LocPref/Second LocPref..............................22
A.3. Advertise Paths at decisive step -1......................23 A.3. Advertise Paths at decisive step -1......................23
1. Introduction 1. Introduction
The BGP Add-Paths capability enhances current BGP implementations by The BGP Add-Paths capability enhances current BGP implementations by
allowing a BGP router to exchange with its BGP peers more than one allowing a BGP router to exchange with its BGP peers more than one
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7. Acknowledgments 7. Acknowledgments
This document was prepared using 2-Word-v2.0.template.dot. This document was prepared using 2-Word-v2.0.template.dot.
8. Contributors 8. Contributors
Virginie Van den Schrieck Virginie Van den Schrieck
Email: v.vandenschrieck@gmail.com Email: v.vandenschrieck@gmail.com
Pradosh Mohapatra
Cumulus Networks
Email: pmohapat@cumulusnetworks.com
Rohit Gupta Rohit Gupta
Apple Inc Apple Inc
Email: rxgupta@apple.com Email: rxgupta@apple.com
9. IANA Considerations 9. IANA Considerations
TBD TBD
10. References 10. References
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Middletown, NJ 07748 USA Middletown, NJ 07748 USA
Email: uttaro@att.com Email: uttaro@att.com
Pierre Francois Pierre Francois
IMDEA Networks IMDEA Networks
Avenida del Mar Mediterraneo Avenida del Mar Mediterraneo
Leganes 28919 Leganes 28919
Spain Spain
Email: pierre.francois@imdea.org Email: pierre.francois@imdea.org
Pradosh Mohapatra
Cumulus Networks
pmohapat@cumulusnetworks.com
Roberto Fragassi Roberto Fragassi
Alcatel-Lucent Alcatel-Lucent
600 Mountain Avenue 600 Mountain Avenue
Murray Hill, New Jersey Murray Hill, New Jersey
Email: roberto.fragassi@alcatel-lucent.com Email: roberto.fragassi@alcatel-lucent.com
Adam Simpson Adam Simpson
Alcatel-Lucent Alcatel-Lucent
600 March Road 600 March Road
Ottawa, Ontario K2K 2E6 Ottawa, Ontario K2K 2E6
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