Metropolitan Area Network evolution

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School of Electrical Engineering | Master's thesis
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Date

2011

Department

Tietoliikenne- ja tietoverkkotekniikan laitos

Major/Subject

Tietoverkkotekniikka

Mcode

S-38

Degree programme

Language

en

Pages

[10] + 83

Series

Abstract

Metropolitan Area Network (MAN) is the first span of network that connects subscribers and business to the Wide Area Networks (WAN). Initial MAN deployments were TDM based that scaled well to meet the requirements of circuit switched traffic. The use of data rich applications forced the service providers to expand their infrastructure in MAN and WAN. MAN needs to evolve to carry statistically multiplexed data to WAN in a cost efficient way. The obvious choice was to extend the use of Ethernet to MAN. Certain enhancements were needed for the traditional Ethernet to bring in the needed scalability, manageability, robustness and Quality of Service (QoS) for providing carrier grade transport service. Native Ethernet standard evolved to a Carrier Ethernet (CE) standard called Provider Backbone Bridge-Traffic Engineering (PBB-TE). PBB-TE is an IEEE standard. ITU-T developed a layer-2 MPLS standard called Transport-MPLS (T-MPLS) to provide Carrier Ethernet Transport (CET) based on MPLS labels. In order to make the MPLS based CET to be compatible with IETF based layer-3 MPLS, ITU-T and IETF jointly developed a standard called MPLS-Transport Profile (MPLS-TP). PBB-TE and MPLS-TP are the leading implementation options for CET. This thesis analyses the features of these leading CET implementation options. The analysis consists of two parts. The first part is analysing the PBB-TE based and MPLS/MPLS-TP based CET implementations based on the metrics like performance, scalability, reliability, complexity, and manageability. The second part is a scenario analysis of CET implementation for a green field service provider, an incumbent service provider, and a service provider providing mobile backhaul. The result of the analysis shows that PBB-TE is a solution for a green field service provider and for mobile backhaul. For an incumbent service provider, the CET option is MPLS-TP.

Description

Supervisor

Kantola, Raimo

Thesis advisor

Heikkinen, Timo-Pekka

Keywords

carrier ethernet transport, metropolitan area network, MPLS-TP, PBB-TE

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Citation

Permanent link to this item

https://urn.fi/URN:NBN:fi:aalto-2020122358575

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[dipl] Sähkötekniikan korkeakoulu / ELEC