Concept Guide

Creating PVLAN ports............................................................................................................................................ 730
Creating a Primary VLAN.........................................................................................................................................731
Creating a Community VLAN................................................................................................................................. 732
Creating an Isolated VLAN......................................................................................................................................732
Private VLAN Conguration Example......................................................................................................................... 734
Inspecting the Private VLAN Conguration............................................................................................................... 735
41 Per-VLAN Spanning Tree Plus (PVST+).................................................................................................... 737
Protocol Overview......................................................................................................................................................... 737
Implementation Information..........................................................................................................................................738
Congure Per-VLAN Spanning Tree Plus....................................................................................................................738
Related Conguration Tasks................................................................................................................................... 738
Enabling PVST+..............................................................................................................................................................738
Disabling PVST+.............................................................................................................................................................739
Inuencing PVST+ Root Selection...............................................................................................................................739
Modifying Global PVST+ Parameters........................................................................................................................... 741
Modifying Interface PVST+ Parameters......................................................................................................................742
Conguring an EdgePort...............................................................................................................................................743
PVST+ in Multi-Vendor Networks................................................................................................................................743
Enabling PVST+ Extend System ID..............................................................................................................................743
PVST+ Sample Congurations..................................................................................................................................... 744
42 Quality of Service (QoS).......................................................................................................................... 747
Implementation Information..........................................................................................................................................749
Port-Based QoS Congurations...................................................................................................................................749
Setting dot1p Priorities for Incoming Trac......................................................................................................... 749
Honoring dot1p Priorities on Ingress Trac..........................................................................................................750
Conguring Port-Based Rate Policing....................................................................................................................751
Conguring Port-Based Rate Shaping...................................................................................................................751
Policy-Based QoS Congurations................................................................................................................................752
Classify Trac.......................................................................................................................................................... 752
Create a QoS Policy.................................................................................................................................................756
Create Policy Maps..................................................................................................................................................758
DSCP Color Maps....................................................................................................................................................762
Enabling QoS Rate Adjustment....................................................................................................................................764
Enabling Strict-Priority Queueing................................................................................................................................ 764
Weighted Random Early Detection..............................................................................................................................765
Creating WRED Proles..........................................................................................................................................766
Applying a WRED Prole to Trac........................................................................................................................ 766
Displaying Default and Congured WRED Proles.............................................................................................. 766
Displaying WRED Drop Statistics........................................................................................................................... 767
Displaying egress–queue Statistics........................................................................................................................767
Pre-Calculating Available QoS CAM Space................................................................................................................ 767
Conguring Weights and ECN for WRED ..................................................................................................................768
Global Service Pools With WRED and ECN Settings..........................................................................................769
Conguring WRED and ECN Attributes......................................................................................................................770
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