oBGP: An Overlay for a Scalable iBGP Control Plane - Inria - Institut national de recherche en sciences et technologies du numérique Access content directly
Conference Papers Year : 2011

oBGP: An Overlay for a Scalable iBGP Control Plane

Mickaël Meulle
  • Function : Author
  • PersonId : 1015739
Steve Uhlig
  • Function : Author
  • PersonId : 1015740
Cristel Pelsser
  • Function : Author
  • PersonId : 1015741
Olaf Maennel
  • Function : Author
  • PersonId : 1015742


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 internal BGP (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 present oBGP, 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.
Fichier principal
Vignette du fichier
978-3-642-20757-0_33_Chapter.pdf (1006.54 Ko) Télécharger le fichier
Origin : Files produced by the author(s)

Dates and versions

hal-01583402 , version 1 (07-09-2017)





Iuniana Oprescu, Mickaël Meulle, Steve Uhlig, Cristel Pelsser, Olaf Maennel, et al.. oBGP: An Overlay for a Scalable iBGP Control Plane. 10th IFIP Networking Conference (NETWORKING), May 2011, Valencia, Spain. pp.420-431, ⟨10.1007/978-3-642-20757-0_33⟩. ⟨hal-01583402⟩
230 View
72 Download



Gmail Facebook X LinkedIn More