Note: The following post is an excerpt from the full QoS section of IEWB-RS VOL1 version 5. Peak shaping may look confusing at first sight; however, its function becomes clear once you think of oversubscription. As we discussed before, oversubscription means selling customers more bandwidth than a network can supply, hoping that not all connections would use their maximum sending rate at the same time. With oversubscription, traffic contract usually specifies three parameters: PIR, CIR and Tc –... Read More

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