Hamza Drid, Nasir Ghani, and Bernard Cousin (2011)
Application-Aware Protection in DWDM Optical Networks
Photonic Network Communications 22(3):240-244.
Fast recovery time and reduced resource utilization are
the two main criteria for determining the quality of
survivability mechanism. Now, it is well known that
linkbased protection and path-based protection provide,
respectively, a short recovery time and reduced use of
resources. To benefit from the both of these saliencies, we
propose in this paper to use these mechanisms
simultaneously. Indeed, demands mandating shorter recovery
time will be protected using link-based protection.
Meanwhile, other demands (e.g., no-critical) will be
protected using path-based protection. Simulation results
show that the proposed solution achieves a good trade-off
between resource utilization and recovery time.