62 Chapter6 DSCP and Precedence ValuesIP Precedence Values Table62 lists the RFC 791 precedence values from least to most important011 000 24CS3 3100 000 32CS4 4101 000 40CS5 5110 000 48CS6 61 ID: 523198
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6-2 Cisco Nexus 1000V Quality of Service Configuration Guide, Release 4.0(4)SV1(1) Chapter6 DSCP and Precedence ValuesIP Precedence Values Table6-2 lists the RFC 791 precedence values from least to most important.011 000 24CS3 3100 000 32CS4 4101 000 40CS5 5110 000 48CS6 6111 000 56CS77000 000 0Default 101 110 46EF Table6-1Commonly Used DSCP Values (continued)DSCP ValueValueMeaningDrop ProbabilityPrecedence Value Table6-2Precedence ValuesValueDescription000 (0)Routine or Best Effort001 (1)Priority 010 (2)Immediate011 (3)Flash - mainly used for Voice Signaling or for Video.100 (4)Flash Override 101 (5)Critical -mainly used for Voice RTP.110 (6)Internet111 (7)Network CHAPTER 6-1 Cisco Nexus 1000V Quality of Service Configuration Guide, Release 4.0(4)SV1(1) This section provides the DSCP and precedence values used in QoS class maps and policy maps.Unless noted as a restriction, you can mark both incoming and outgoing packets.Table6-1 lists the commonly used DSCP values described in RFC 2475Table6-1Commonly Used DSCP ValuesDSCP ValueValueMeaningDrop ProbabilityPrecedence Value101 110 46High PriorityExpedited Forwarding N/A101 - Critical000 000 0Best EffortN/A000 - Routine001 010 10AF11Low001 - Priority001 100 12AF12Medium001 - Priority001 110 14AF13High001 - Priority010 010 18AF21Low010 - Immediate010 100 20AF22Medium010 - Immediate010 110 22AF23High010 - Immediate011 010 26AF31Low011 - Flash011 100 28AF32Medium011 - Flash011 110 30AF33High011 - Flash100 010 34AF41Low100 - Flash Override100 100 36AF42Medium100 - Flash Override100 110 38AF43High100 - Flash Override001 000 8CS11010 000 16CS2 2