Title :
A New Pre-emption Policy For MPLS-TE Networks
Author :
Chaieb, Imène ; Roux, Jean-Louis Le ; Cousin, Bernard
Author_Institution :
France Telecom R&D, Lannion
Abstract :
The pre-emption mechanism may be used in multi protocol label switching traffic engineering (MPLS-TE) networks in order to reduce the number of rejected tunnels during failure. But pre-emption may have an impact on the convergence time, and it is required to minimize the number of pre-emptions per tunnel. For that purpose this paper proposes a new preemption policy allowing reducing or limiting the number of pre-emptions per tunnel, after a network failure. Two approaches are proposed: A pre-emption reduction approach where the least preempted tunnels are pre-empted in priority and a pre-emption limitation approach where a tunnel cannot be preempted more than N times during a given period. Simulation results show that we can limit the maximum number of pre-emptions for a given tunnel to only one, without significantly diminishing the rejection reduction capabilities.
Keywords :
multiprotocol label switching; telecommunication traffic; MPLS-TE; multi protocol label switching traffic engineering networks; network failure; pre-emption mechanism; Bandwidth; Convergence; Multiprotocol label switching; Packet switching; Reliability engineering; Research and development; Routing protocols; Telecommunication traffic; Tellurium; Traffic control;
Conference_Titel :
Networks, 2007. ICON 2007. 15th IEEE International Conference on
Conference_Location :
Adelaide, SA
Print_ISBN :
978-1-4244-1230-3
Electronic_ISBN :
1556-6463
DOI :
10.1109/ICON.2007.4444119