QoS in ATM
For ATM, let us first consider the peak cell rate reference model: The ATM forum specifications provide a reference model to describe the peak cell rate (PCR). For conformance definitions, generic cell rate algorithm (GCRA) is used for ATM. Similar to constraint routing CR-LDP (Constraint Routing–Label Distribution Protocol) parameters and attributes are listed here:
Peak data rate— The maximum rate at which traffic can be sent to the constraint routing–label switched path (CR-LSP). It is defined with a token bucket with parameters: peak data rate and peak burst size.
Committed data rate— The rate that the MPLS domain commits for the CR-LSP. It is defined with parameters committed data rate and committed burst rate.
Get First Mile Access Networks and Enabling Technologies now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
