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Olaf Maennel's Publications

oBGP: an Overlay for a Scalable iBGP Control Plane
Zitatschlüssel OMUPMO-OOSICP-11
Autor Oprescu, Iuniana and Meulle, Mickael and Uhlig, Steve and Pelsser, Cristel and Maennel, Olaf and Owezarski, Philippe
Buchtitel Proceedings of IFIP Networking 2011
Seiten 420–431
Jahr 2011
ISBN 978-3-642-20756-3
ISSN 0302-9743
Online ISSN 1611-3349
Ort Valencia, Spain
Adresse Berlin / Heidelberg, Germany
Jahrgang 6640
Monat May
Verlag Springer
Serie Lecture Notes in Computer Science (LNCS)
Zusammenfassung The Internet is organized as a collection of networks called Autonomous Systems (ASes). The Border Gateway Protocol (BGP) is the glue that connects these administrative domains. Communication is thus possible between users worldwide and each network is responsible of sharing reachability information to peers through BGP. Protocol extensions are periodically added because the intended use and design of BGP no longer fit the current demands. Scalability concerns make the required iBGP full mesh difficult to achieve in today¿s large networks and therefore network operators resort to confederations or Route Reflectors (RRs) to achieve full connectivity. These two options come with a set of flaws of their own such as persistent routing oscillations, deflections, forwarding loops etc. In this paper we propose a new architecture for the redistribution of external routes inside an AS. Instead of relying on the usual statically configured set of iBGP sessions, we propose to use an overlay of routing instances that are collectively responsible for (i) the exchange of routes with other ASes, (ii) the storage of internal and external routes, (iii) the storage of the entire routing policy configuration of the AS and (iv) the computation and redistribution of the best routes towards Internet destinations to each router of the AS.
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