Install Guide

Table Of Contents
Inspecting the Private VLAN Configuration............................................................................................................. 709
Chapter 43: Per-VLAN Spanning Tree Plus (PVST+)................................................................... 711
Protocol Overview............................................................................................................................................................711
Implementation Information.......................................................................................................................................... 712
Configure Per-VLAN Spanning Tree Plus.................................................................................................................. 713
Enabling PVST+................................................................................................................................................................713
Disabling PVST+...............................................................................................................................................................713
Influencing PVST+ Root Selection.............................................................................................................................. 714
Modifying Global PVST+ Parameters......................................................................................................................... 715
Modifying Interface PVST+ Parameters.................................................................................................................... 715
Configuring an EdgePort................................................................................................................................................716
PVST+ in Multi-Vendor Networks............................................................................................................................... 717
Enabling PVST+ Extend System ID............................................................................................................................. 717
PVST+ Sample Configurations..................................................................................................................................... 718
Chapter 44: Quality of Service (QoS)........................................................................................ 720
Implementation Information..........................................................................................................................................722
Port-Based QoS Configurations.................................................................................................................................. 722
Setting dot1p Priorities for Incoming Traffic...................................................................................................... 722
Honoring dot1p Priorities on Ingress Traffic....................................................................................................... 723
Configuring Port-Based Rate Policing................................................................................................................. 723
Configuring Port-Based Rate Shaping................................................................................................................. 724
Policy-Based QoS Configurations............................................................................................................................... 725
Classify Traffic...........................................................................................................................................................725
Create a QoS Policy..................................................................................................................................................728
Create Policy Maps...................................................................................................................................................730
DSCP Color Maps........................................................................................................................................................... 733
Creating a DSCP Color Map................................................................................................................................... 733
Displaying DSCP Color Maps..................................................................................................................................734
Displaying a DSCP Color Policy Configuration ..................................................................................................735
Enabling QoS Rate Adjustment....................................................................................................................................735
Enabling Strict-Priority Queueing............................................................................................................................... 736
Weighted Random Early Detection.............................................................................................................................736
Creating WRED Profiles...........................................................................................................................................737
Applying a WRED Profile to Traffic.......................................................................................................................737
Displaying Default and Configured WRED Profiles............................................................................................737
Displaying WRED Drop Statistics.......................................................................................................................... 738
Displaying egressqueue Statistics...................................................................................................................... 738
Pre-Calculating Available QoS CAM Space.............................................................................................................. 738
Configuring Weights and ECN for WRED ................................................................................................................ 739
Configuring WRED and ECN Attributes.................................................................................................................... 740
Guidelines for Configuring ECN for Classifying and Color-Marking Packets....................................................741
Sample configuration to mark non-ecn packets as yellow with Multiple traffic class..........................742
Classifying Incoming Packets Using ECN and Color-Marking........................................................................742
Sample configuration to mark non-ecn packets as yellow with single traffic class.............................. 743
Applying Layer 2 Match Criteria on a Layer 3 Interface........................................................................................745
Applying DSCP and VLAN Match Criteria on a Service Queue........................................................................... 745
Classifying Incoming Packets Using ECN and Color-Marking..............................................................................746
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