Administrator Guide

Inspecting the Private VLAN Configuration.............................................................................................................. 713
Chapter 43: Per-VLAN Spanning Tree Plus (PVST+).................................................................. 715
Protocol Overview...........................................................................................................................................................715
Implementation Information.......................................................................................................................................... 716
Configure Per-VLAN Spanning Tree Plus.................................................................................................................. 717
Enabling PVST+................................................................................................................................................................717
Disabling PVST+............................................................................................................................................................... 717
Influencing PVST+ Root Selection.............................................................................................................................. 718
Modifying Global PVST+ Parameters......................................................................................................................... 719
Modifying Interface PVST+ Parameters.................................................................................................................... 719
Configuring an EdgePort...............................................................................................................................................720
PVST+ in Multi-Vendor Networks............................................................................................................................... 721
Enabling PVST+ Extend System ID............................................................................................................................. 721
PVST+ Sample Configurations.....................................................................................................................................722
Chapter 44: Quality of Service (QoS).........................................................................................724
Implementation Information..........................................................................................................................................726
Port-Based QoS Configurations.................................................................................................................................. 726
Setting dot1p Priorities for Incoming Traffic...................................................................................................... 726
Honoring dot1p Priorities on Ingress Traffic....................................................................................................... 727
Configuring Port-Based Rate Policing..................................................................................................................727
Configuring Port-Based Rate Shaping................................................................................................................. 728
Policy-Based QoS Configurations............................................................................................................................... 729
Classify Traffic........................................................................................................................................................... 729
Create a QoS Policy..................................................................................................................................................732
Create Policy Maps...................................................................................................................................................734
DSCP Color Maps............................................................................................................................................................737
Creating a DSCP Color Map................................................................................................................................... 737
Displaying DSCP Color Maps..................................................................................................................................738
Displaying a DSCP Color Policy Configuration ..................................................................................................739
Enabling QoS Rate Adjustment....................................................................................................................................739
Enabling Strict-Priority Queueing............................................................................................................................... 740
Weighted Random Early Detection.............................................................................................................................740
Creating WRED Profiles........................................................................................................................................... 741
Applying a WRED Profile to Traffic....................................................................................................................... 741
Displaying Default and Configured WRED Profiles............................................................................................742
Displaying WRED Drop Statistics.......................................................................................................................... 742
Displaying egress–queue Statistics.......................................................................................................................742
Pre-Calculating Available QoS CAM Space.............................................................................................................. 742
Configuring Weights and ECN for WRED ................................................................................................................ 743
Configuring WRED and ECN Attributes.................................................................................................................... 745
Guidelines for Configuring ECN for Classifying and Color-Marking Packets................................................... 746
Sample configuration to mark non-ecn packets as “yellow” with Multiple traffic class..........................746
Classifying Incoming Packets Using ECN and Color-Marking........................................................................ 747
Sample configuration to mark non-ecn packets as “yellow” with single traffic class.............................. 748
Applying Layer 2 Match Criteria on a Layer 3 Interface........................................................................................749
Applying DSCP and VLAN Match Criteria on a Service Queue........................................................................... 750
Classifying Incoming Packets Using ECN and Color-Marking..............................................................................750
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