Enabling PVST+ Extend System ID..............................................................................................................................691PVST+ Sample Configurations.....................................................................................................................................69239 Quality of Service (QoS)......................................................................................................................... 695Implementation Information..........................................................................................................................................697Port-Based QoS Configurations...................................................................................................................................697Setting dot1p Priorities for Incoming Traffic......................................................................................................... 697Honoring dot1p Priorities on Ingress Traffic..........................................................................................................698Configuring Port-Based Rate Policing.................................................................................................................. 699Configuring Port-Based Rate Shaping..................................................................................................................699Policy-Based QoS Configurations................................................................................................................................700Classify Traffic.......................................................................................................................................................... 700Dot1p to Queue Mapping Requirement.................................................................................................................703Create a QoS Policy.................................................................................................................................................704DSCP Color Maps....................................................................................................................................................706Create Policy Maps..................................................................................................................................................708Enabling QoS Rate Adjustment.....................................................................................................................................712Enabling Strict-Priority Queueing................................................................................................................................. 712Queue Classification Requirements for PFC Functionality........................................................................................713Support for marking dot1p value in L3 Input Qos Policy............................................................................................713Weighted Random Early Detection...............................................................................................................................714Creating WRED Profiles...........................................................................................................................................714Applying a WRED Profile to Traffic.........................................................................................................................715Displaying Default and Configured WRED Profiles...............................................................................................715Displaying WRED Drop Statistics............................................................................................................................715Displaying egress–queue Statistics........................................................................................................................ 716Pre-Calculating Available QoS CAM Space.................................................................................................................716Specifying Policy-Based Rate Shaping in Packets Per Second................................................................................ 717Configuring Policy-Based Rate Shaping...................................................................................................................... 718Configuring Weights and ECN for WRED .................................................................................................................. 718Global Service Pools With WRED and ECN Settings...........................................................................................719Configuring WRED and ECN Attributes......................................................................................................................720Guidelines for Configuring ECN for Classifying and Color-Marking Packets......................................................... 720Sample configuration to mark non-ecn packets as “yellow” with Multiple traffic class...................................721Classifying Incoming Packets Using ECN and Color-Marking............................................................................ 721Sample configuration to mark non-ecn packets as “yellow” with single traffic class......................................723Applying Layer 2 Match Criteria on a Layer 3 Interface............................................................................................ 724Managing Hardware Buffer Statistics................................................................................................................... 725Enabling Buffer Statistics Tracking ............................................................................................................................. 72540 Routing Information Protocol (RIP)..........................................................................................................727Protocol Overview......................................................................................................................................................... 727RIPv1.......................................................................................................................................................................... 727RIPv2......................................................................................................................................................................... 727Implementation Information..........................................................................................................................................728Configuration Information............................................................................................................................................. 728Contents 23