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Contents
E-NIT-CTC-20041213-0013 v0.5
3
Contents
About this IPQoS Configuration Guide...................... 7
1 Document scope ........................................................... 9
2 Introduction ................................................................. 11
2.1 What is Quality of Service? .......................................................... 12
2.2 Relative versus Guaranteed QoS.................................................. 14
3 Basic QoS Concepts.................................................... 15
3.1 Precedence and TOS .................................................................... 16
3.2 Differentiated Services ................................................................ 18
3.3 Classification and conditioning principles................................... 20
3.4 Differentiated Services Code Point (DSCP) ................................. 22
4 IP QoS Framework Overview..................................... 25
4.1 Main Framework Components ..................................................... 26
4.2 Resource Management................................................................. 27
5 Packet Classification and Labelling ........................... 29