The Virtual Topology Service: A Mechanism for QoS-Enabled Interdomain Routing
In this paper we present the Virtual Topology Service (VTS), a new approach to provide interdomain services taking into account QoS and Traffic Engineering (TE) constraints. It is known that in these days the provisioning of end-to-end interdomain connections does not consider any type of QoS due to limitations of the BGP routing protocol. At the same time, many extensions have been proposed to BGP, however none of them were put into practice. We advocate in favor of a service layer that offers new mechanisms for interdomain routing without affecting the underlying Internet infrastructure. The VTS abstracts the physical network details of each Autonomous System (AS) and is totally integrated with BGP. We use the Internet hierarchy to obtain more alternative routes towards a destination. The architecture was already used to provide interdomain services in optical networks. In this paper we show how the architecture can be used to provide interdomain connections in IP networks. We will show how the VTS and other services such as the end-to-end negotiation service work together to provide a complete mechanism for provisioning of interdomain QoS-enabled routes. Preliminary evaluation results are also presented.
KeywordsAutonomous System Packet Loss Rate Source Domain Virtual Link Simple Object Access Protocol
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- 1.NSF Report. Overcoming Barriers to Disruptive Innovation in Networking. Report of NSF Workshop (2005)Google Scholar
- 2.Agarwal, S., Chuah, C., Katz, R.: OPCA: Robust Interdomain Policy Routing and Traffic Control. In: OPENARCH (2003)Google Scholar
- 3.Web Services Activity: http://www.w3.org/2002/ws/
- 4.Verdi, F.L., Madeira, E., Magalhães, M.: Web Services and SOA as Facilitators for ISPs. In: International Conference on Telecommunications (ICT 2006), Madeira Island, Portugal (May 2006)Google Scholar
- 5.Verdi, F.L., Duarte, R., de Lacerda, F.C., Madeira, E., Cardozo, E., Magalhães, M.: Provisioning and Management of Inter-Domain Connections in Optical Networks: A Service Oriented Architecture-based Approach. In: IEEE/IFIP Network Operations and Management Symposium (NOMS 2006) (2006)Google Scholar
- 6.Verdi, F.L., Madeira, E., Magalhães, M.: On the Performance of Interdomain Provisioning of Connections in Optical Networks using Web Services. In: IEEE International Symposium on Computers and Communications (ISCC 2006), Sardinia, Italy (June 2006)Google Scholar
- 8.Cristallo, G., Jacquenet, C.: An Approach to Inter-domain Traffic Engineering. In: Proceedings of XVIII World Telecommunications Congress (2002)Google Scholar
- 10.Subramanian, L., Agarwal, S., Rexford, J., Katz, R.: Characterizing the Internet Hierarchy from Multiple Vantage Points. In: IEEE Infocom (June 2002)Google Scholar
- 11.http://fabrice.bellard.free.fr/qemu/ (April 2006)
- 12.http://net-snmp.sourceforge.net/ (April 2006)
- 13.http://ws.apache.org/axis/ (2005)