NDLI: OBGP+: A simple approach to drastically improve OBGP

Content Provider	IEEE Xplore Digital Library
Author	Yannuzzi, M. Masip-Bruin, X. Fabrego, G. Sanchez-Lopez, S. Sole-Pareta, J.
Copyright Year	2008
Description	Author affiliation: Dept. of Comput. Archit., Tech. Univ. of Catalonia, Barcelona (Yannuzzi, M.; Masip-Bruin, X.; Fabrego, G.; Sanchez-Lopez, S.; Sole-Pareta, J.)
Abstract	During the last few years, the research community has shown an increasing interest in the subject of inter-domain routing in optical networks, so new approaches like the optical extension of BGP, namely OBGP, have arisen. However, it is widely accepted now that a multi-domain routing model mostly centered on the exchange of reachability information - like the one we have today or the one provided by OBGP - is not going to be enough in the future. Routing domains must be able to exchange both, reachability, as well as aggregated path state information (PSI). Understanding that there 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 these routing protocols without increasing the number and frequency of the routing messages exchanged between domains is a challenging task. This study makes the following contributions. First, we propose a straightforward strategy to compute highly aggregated PSI between routing domains. Second, we propose OBGP+, an extended version of OBGP that exploits this PSI to compute inter-domain lightpaths in a highly efficient way. Third, in order to avoid the typical increase in the number of routing messages associated with the update of PSI, we propose to piggy-back these updates in non-dummy Keepalive messages exchanged between OBGP+ neighbors. Extensive simulations made with OPNET in the PAN European network topology reveal that: i) OBGP+ is able to drastically reduce the blocking experienced with OBGP; ii) while even needing less number of routing messages than OBGP to achieve this performance.
Starting Page	1
Ending Page	6
File Size	247305
Page Count	6
File Format	PDF
ISBN	9783901882272
DOI	10.1109/ONDM.2008.4578403
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-03-12
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	IFIP
Subject Keyword	Optical filters Discussion forums Wavelength assignment Standardization Computer architecture Optical fiber networks Frequency Routing protocols Research initiatives Wavelength routing
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in