View from France Telecom-Orange (synopsis)


Opening with Pierre Combescure's keynote, a key theme running through the conference is that global network optimisation requires transport and routing teams to work together and combine their skills and experience.  The days of strategy and planning in separate silos must be in the past and "Human wide acceptance is key for the success of any (R)evolution".


FT-Orange presented a detailed perspective on the history, objectives and requirements for MPLS-TP (following a succession of proposed technologies in recent years: PB, PBB, PBB-TE, T-MPLS).  And then posed the key question: "Is MPLS-TP the right solution?"


In principle, MPLS-TP can address the transport requirements, however it is not so mature and further, is not the only candidate: OTN in the transport domain and MPLS in the routing domain are strong contenders.  So in fact, what precisely is the opportunity in the transport and routing domains:

- Transport: is packet-switching needed?  Is MPLS-TP + WDM competing against OTN + WDM?
- Routing: which are the benefits compared to existing MPLS infrastructure?

For the transport domain, FT-Orange considers that in a large transport backbone, MPLS-TP has only a limited interest (like OTN), but MPLS-TP could be an interesting solution for backhaul transport networks, in the absence of MPLS or in a Greenfield situation.  However, MPLS-TP must have a clear cost advantage against (IP)/MPLS (amongst other factors).

A number of transport and non-transport use cases were also presented, including a carrier’s carrier service for MPLS traffic.  In this case, using MPLS-TP OAM would permit monitoring of portions of inter-domain LSPs that cross the wholesale provider’s network.  Another use case for MPLS-TP is Business Ethernet services, which are offered by Orange Business on a dedicated L2VPN network, and sold by Marketing as “decoupled” from IP/MPLS infrastructure to address security aspects.






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