On the cost of using MPLS for interdomain traffic
Steve Uhlig and Olivier Bonaventure
Multi-Protocol Label Switching (MPLS) is currently heavily used inside autonomous systems for
traffic engineering purposes. We study the cost of using MPLS to carry interdomain traffic by
analyzing two one day traces from two different ISPs. Our study shows that a hybrid MPLS+IP
solution can significantly reduce the number of LSPs and signaling operations by using MPLS
for high bandwidth flows and pure IP for low bandwidth flows. However, the burstiness of the
interdomain LSPs could be a problem.
Published in Quality of Future Internet Services (QoFIS 2000), September 2000.
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