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Asymmetric tunnels in P2MP LSPs as a label space reduction method
Solano Donado, Fernando; Fabregat Gesa, Ramon; Donoso Meisel, Yezid; Marzo i Lázaro, Josep Lluís
The objective of traffic engineering is to optimize network resource utilization. Although several works have been published about minimizing network resource utilization, few works have focused on LSR (label switched router) label space. This paper proposes an algorithm that takes advantage of the MPLS label stack features in order to reduce the number of labels used in LSPs. Some tunnelling methods and their MPLS implementation drawbacks are also discussed. The described algorithm sets up NHLFE (next hop label forwarding entry) tables in each LSR, creating asymmetric tunnels when possible. Experimental results show that the described algorithm achieves a great reduction factor in the label space. The presented works apply for both types of connections: P2MP (point-to-multipoint) and P2P (point-to-point)
21-05-2010
MPLS (Norma)
Telecomunicació -- Tràfic
MPLS standard
Telecommunication -- Traffic
Tots els drets reservats
Artículo
IEEE
         

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