OBGP+: An improved path-vector protocol for multi-domain optical networks

One of the essential components for the dynamic provisioning of lightpaths across multiple domains is the Routing and Wavelength Assignment (RWA) strategy adopted. The consolidation that path-vector protocols have had in practice, has motivated the optical extension to BGP (OBGP). We claim, however,...

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Autores: Yannuzzi, Marcelo, Masip Bruin, Xavier|||0000-0002-4755-556X, Sánchez López, Sergio|||0000-0002-3922-2298, Marín Tordera, Eva|||0000-0002-2039-8277
Tipo de recurso: artículo
Fecha de publicación:2009
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/9655
Acceso en línea:https://hdl.handle.net/2117/9655
https://dx.doi.org/10.1016/j.osn.2008.12.001
Access Level:acceso abierto
Palabra clave:Optical communications
Routers (Computer networks)
BGP (Computer network protocol)
Ordinadors, Xarxes d'
Comunicacions òptiques
Protocols de xarxes d'ordinadors
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica
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oai_identifier_str oai:upcommons.upc.edu:2117/9655
network_acronym_str ES
network_name_str España
repository_id_str
spelling OBGP+: An improved path-vector protocol for multi-domain optical networksYannuzzi, MarceloMasip Bruin, Xavier|||0000-0002-4755-556XSánchez López, Sergio|||0000-0002-3922-2298Marín Tordera, Eva|||0000-0002-2039-8277Optical communicationsRouters (Computer networks)BGP (Computer network protocol)Ordinadors, Xarxes d'Comunicacions òptiquesProtocols de xarxes d'ordinadorsÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òpticaOne of the essential components for the dynamic provisioning of lightpaths across multiple domains is the Routing and Wavelength Assignment (RWA) strategy adopted. The consolidation that path-vector protocols have had in practice, has motivated the optical extension to BGP (OBGP). We claim, however, that a routing model mostly centered on the exchange of reachability information–like the one we have today with BGP or the one offered by OBGP–will not be sufficient for multi-domain optical networks. Routing domains must be able to exchange both reachability as well as aggregated Path-State Information (PSI). Understanding that this is a missing piece in the routing models provided by BGP and OBGP is easy nowadays, but contributing with solutions capable of highly improving the performance of a path-vector without impacting on key aspects of the protocol–fundamentally, its scalability, its convergence properties, and the number of routing messages exchanged between domains–is a challenging task. In this paper we propose OBGP +, which is a very simple extension of a path-vector protocol supporting the computation and advertisement of PSI between optical domains. The PSI that we propose to use is highly condensed in the form of a single integer value. In order to avoid the typical increase in the number of routing messages associated with the update of PSI, we propose to piggy-back the updates in non-dummy Keepalive messages exchanged between OBGP+ neighbors. Extensive simulations reveal that, despite its simplicity: (i) OBGP+ is able to drastically reduce the blocking experienced with a path-vector protocol like OBGP; (ii) OBGP+ needs much less number of routing messages than OBGP to achieve such performance; and (iii) the convergence and restoration features of OBGP+ are also better than those of OBGP, which is particularly important for connections that lack a protection path.20092009-04-0120102010-10-13journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/9655https://dx.doi.org/10.1016/j.osn.2008.12.001reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivs 3.0 Spainhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/96552026-05-27T15:37:01Z
dc.title.none.fl_str_mv OBGP+: An improved path-vector protocol for multi-domain optical networks
title OBGP+: An improved path-vector protocol for multi-domain optical networks
spellingShingle OBGP+: An improved path-vector protocol for multi-domain optical networks
Yannuzzi, Marcelo
Optical communications
Routers (Computer networks)
BGP (Computer network protocol)
Ordinadors, Xarxes d'
Comunicacions òptiques
Protocols de xarxes d'ordinadors
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica
title_short OBGP+: An improved path-vector protocol for multi-domain optical networks
title_full OBGP+: An improved path-vector protocol for multi-domain optical networks
title_fullStr OBGP+: An improved path-vector protocol for multi-domain optical networks
title_full_unstemmed OBGP+: An improved path-vector protocol for multi-domain optical networks
title_sort OBGP+: An improved path-vector protocol for multi-domain optical networks
dc.creator.none.fl_str_mv Yannuzzi, Marcelo
Masip Bruin, Xavier|||0000-0002-4755-556X
Sánchez López, Sergio|||0000-0002-3922-2298
Marín Tordera, Eva|||0000-0002-2039-8277
author Yannuzzi, Marcelo
author_facet Yannuzzi, Marcelo
Masip Bruin, Xavier|||0000-0002-4755-556X
Sánchez López, Sergio|||0000-0002-3922-2298
Marín Tordera, Eva|||0000-0002-2039-8277
author_role author
author2 Masip Bruin, Xavier|||0000-0002-4755-556X
Sánchez López, Sergio|||0000-0002-3922-2298
Marín Tordera, Eva|||0000-0002-2039-8277
author2_role author
author
author
dc.subject.none.fl_str_mv Optical communications
Routers (Computer networks)
BGP (Computer network protocol)
Ordinadors, Xarxes d'
Comunicacions òptiques
Protocols de xarxes d'ordinadors
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica
topic Optical communications
Routers (Computer networks)
BGP (Computer network protocol)
Ordinadors, Xarxes d'
Comunicacions òptiques
Protocols de xarxes d'ordinadors
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica
description One of the essential components for the dynamic provisioning of lightpaths across multiple domains is the Routing and Wavelength Assignment (RWA) strategy adopted. The consolidation that path-vector protocols have had in practice, has motivated the optical extension to BGP (OBGP). We claim, however, that a routing model mostly centered on the exchange of reachability information–like the one we have today with BGP or the one offered by OBGP–will not be sufficient for multi-domain optical networks. Routing domains must be able to exchange both reachability as well as aggregated Path-State Information (PSI). Understanding that this is a missing piece in the routing models provided by BGP and OBGP is easy nowadays, but contributing with solutions capable of highly improving the performance of a path-vector without impacting on key aspects of the protocol–fundamentally, its scalability, its convergence properties, and the number of routing messages exchanged between domains–is a challenging task. In this paper we propose OBGP +, which is a very simple extension of a path-vector protocol supporting the computation and advertisement of PSI between optical domains. The PSI that we propose to use is highly condensed in the form of a single integer value. In order to avoid the typical increase in the number of routing messages associated with the update of PSI, we propose to piggy-back the updates in non-dummy Keepalive messages exchanged between OBGP+ neighbors. Extensive simulations reveal that, despite its simplicity: (i) OBGP+ is able to drastically reduce the blocking experienced with a path-vector protocol like OBGP; (ii) OBGP+ needs much less number of routing messages than OBGP to achieve such performance; and (iii) the convergence and restoration features of OBGP+ are also better than those of OBGP, which is particularly important for connections that lack a protection path.
publishDate 2009
dc.date.none.fl_str_mv 2009
2009-04-01
2010
2010-10-13
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/9655
https://dx.doi.org/10.1016/j.osn.2008.12.001
url https://hdl.handle.net/2117/9655
https://dx.doi.org/10.1016/j.osn.2008.12.001
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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