Users Guide

Creating a Primary VLAN......................................................................................................................................... 683
Creating a Community VLAN................................................................................................................................... 684
Creating an Isolated VLAN....................................................................................................................................... 684
Private VLAN Conguration Example.............................................................................................................................685
Inspecting the Private VLAN Conguration..............................................................................................................686
46 Per-VLAN Spanning Tree Plus (PVST+).....................................................................689
Protocol Overview......................................................................................................................................................... 689
Implementation Information........................................................................................................................................... 690
Congure Per-VLAN Spanning Tree Plus....................................................................................................................... 690
Related Conguration Tasks.....................................................................................................................................690
Enabling PVST+............................................................................................................................................................. 690
Disabling PVST+.............................................................................................................................................................690
Inuencing PVST+ Root Selection............................................................................................................................ 691
Modifying Global PVST+ Parameters............................................................................................................................. 692
Modifying Interface PVST+ Parameters......................................................................................................................... 693
Conguring an EdgePort................................................................................................................................................694
PVST+ in Multi-Vendor Networks.................................................................................................................................. 695
Enabling PVST+ Extend System ID................................................................................................................................ 695
PVST+ Sample Congurations....................................................................................................................................... 696
47 Quality of Service (QoS)........................................................................................... 698
Implementation Information........................................................................................................................................... 699
Port-Based QoS Congurations..................................................................................................................................... 700
Setting dot1p Priorities for Incoming Trac..............................................................................................................700
Honoring dot1p Priorities on Ingress Trac.............................................................................................................. 700
Conguring Port-Based Rate Policing....................................................................................................................... 701
Conguring Port-Based Rate Shaping.......................................................................................................................701
Policy-Based QoS Congurations...................................................................................................................................702
Classify Trac..........................................................................................................................................................702
Create a QoS Policy................................................................................................................................................. 706
Create Policy Maps.................................................................................................................................................. 708
DSCP Color Maps............................................................................................................................................................711
Creating a DSCP Color Map...................................................................................................................................... 711
Displaying DSCP Color Maps.................................................................................................................................... 712
Displaying a DSCP Color Policy Conguration .......................................................................................................... 712
Enabling QoS Rate Adjustment....................................................................................................................................... 713
Enabling Strict-Priority Queueing.................................................................................................................................... 713
Weighted Random Early Detection..................................................................................................................................714
Creating WRED Proles............................................................................................................................................ 714
Applying a WRED Prole to Trac............................................................................................................................ 715
Displaying Default and Congured WRED Proles.....................................................................................................715
Displaying WRED Drop Statistics.............................................................................................................................. 715
Displaying egress-queue Statistics............................................................................................................................ 715
Pre-Calculating Available QoS CAM Space..................................................................................................................... 716
Conguring Weights and ECN for WRED .......................................................................................................................716
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