Outline B ackoround: Optical burst switching (OBS Bounds for blocking probability obtained by Overflow Priority Classification Approximation(OPCA)in OBS networks with deflection routin o Effective and ineffective utilizations in obs networks EBSL-a combination of Emulated-OBS(E-OBS) segmentation and least remaining hop-count first ( LRHF .Q&aOutline  Background: Optical burst switching (OBS)  Bounds for blocking probability obtained by Overflow Priority Classification Approximation (OPCA) in OBS networks with deflection routing  Effective and ineffective utilizations in OBS networks  EBSL – a combination of Emulated-OBS (E-OBS), segmentation and least remaining hop-count first (LRHF)  Q & A 2