NANOG Meeting Presentation Abstract

Demystifying Pros & Cons of large Scale BGP RR deployments
Meeting:	NANOG65
Date / Time:	2015-10-06 9:30am - 11:00am
Room:	Jolliet
Presenters:	Speakers: rohit bothra, Brocade Communications Rohit Bothra is a Staff Engineer at Vyatta - a Brocade company, specializing in virtual network appliances, system & solution testing, performance & scale measurement of virtual systems. He has over nine years of rich experience in Networking industry.He has worked with many major service providers in the Asia Pacific region in the area of IP, IPv6, MPLS. His area of expertise includes NFV, VNFs, Routing Protocols, MPLS, IPv6, HA Systems, Routing Platforms, Network Security, Network Operations, providing Network deployment solutions to different service provider customers. In the past, he has represented Cisco at APNIC conferences. He is passionate about learning new technologies.
Abstract:	In modern ISP deployments, the number of BGP speakers inside a ISP's core can be more than one thousand and can spread across different geographical locations . To scale with the increasing number of routers, large ISPs have developed and used more scalable i-BGP architectures such as BGP route reflectors (RR) without thorough analysis of their design considerations. This lack of such analysis escalated interests and concerns on BGP performance inside a large ISP; BGP performance inside large ISPs is no longer simple to understand and can potentially have a noticeable impact on the end-to-end data plane performance & customer service impacts. Some positives of RR implementations include reduced networking provisioning cost, reduced memory usage for storing routing tables, and reduced number of update messages generated inside an ISP. However, these benefits come at some serious cost; there are also negative side effects on both routing correctness and routing performance due to RR deployments. The objective of this Tutorial is to provide a thorough understanding of benefits & challenges of large scale RR deployments. It will try to address the concerns from the Internet community regarding the i-BGP topological complexities. The tutorial will also explain the BGP optimization techniques, BGP designs & new features available from different vendors to improve or negate the challenges faced in RR deployments.
Files:	Demystifying Pros & Cons of large Scale BGP RR deployments(PDF) Demystifying Pros & Cons of large Scale BGP RR deployments
Sponsors:	None.

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  Philippe Couture, Videotron; Clinton Work, TELUS;

• Conference Opening
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  Philippe Couture, Videotron; Clinton Work, TELUS;

• Conference Opening
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  Philippe Couture, Videotron; Clinton Work, TELUS;

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• DNS Track
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  Brian SomersOpenDNS ; .
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• DNS Track
  Speakers:
  Geoff HustonAPNIC; .
  Duane Wessels, VeriSign; Keith MithcellDNS-OARC; .
  Brian SomersOpenDNS ; .
  Ray BellisInternet Systems Consortium; .
  Eddie Winstead.
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• DNS Track
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  Geoff HustonAPNIC; .
  Duane Wessels, VeriSign; Keith MithcellDNS-OARC; .
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• Demystifying Pros & Cons of large Scale BGP RR deployments
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  rohit bothra, Brocade Communications;

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• Peering Track
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  Jon Nistor, TorIX;

• Peering Track
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  Sylvie LaPerriere, Google Inc.; Patrick Gilmore, Markley Group; Panelists:
  David E. Young, Verizon; Hank Hultquist, AT&T; Joseph Cavender, Level 3 Communications; Speakers:
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• Peering Track
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  David E. Young, Verizon; Hank Hultquist, AT&T; Joseph Cavender, Level 3 Communications; Speakers:
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• Closing Remarks
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