White Papers

Table Of Contents
Creating a Primary VLAN........................................................................................................................................660
Creating a Community VLAN..................................................................................................................................661
Creating an Isolated VLAN......................................................................................................................................662
Private VLAN Configuration Example........................................................................................................................ 663
Inspecting the Private VLAN Configuration............................................................................................................. 664
Chapter 40: Per-VLAN Spanning Tree Plus (PVST+)..................................................................666
Protocol Overview..........................................................................................................................................................666
Implementation Information..........................................................................................................................................667
Configure Per-VLAN Spanning Tree Plus................................................................................................................. 668
Enabling PVST+...............................................................................................................................................................668
Disabling PVST+..............................................................................................................................................................668
Influencing PVST+ Root Selection............................................................................................................................. 669
Modifying Global PVST+ Parameters.........................................................................................................................670
Modifying Interface PVST+ Parameters................................................................................................................... 670
Configuring an EdgePort................................................................................................................................................671
PVST+ in Multi-Vendor Networks.............................................................................................................................. 672
Enabling PVST+ Extend System ID............................................................................................................................ 672
PVST+ Sample Configurations.................................................................................................................................... 673
Chapter 41: Quality of Service (QoS).........................................................................................675
Implementation Information..........................................................................................................................................677
Port-Based QoS Configurations.................................................................................................................................. 677
Setting dot1p Priorities for Incoming Traffic...................................................................................................... 677
Honoring dot1p Priorities on Ingress Traffic.......................................................................................................678
Configuring Port-Based Rate Policing................................................................................................................. 678
Configuring Port-Based Rate Shaping.................................................................................................................678
Policy-Based QoS Configurations...............................................................................................................................679
Classify Traffic...........................................................................................................................................................680
Dot1p to Queue Mapping Requirement................................................................................................................682
Create a QoS Policy................................................................................................................................................. 683
DSCP Color Maps..................................................................................................................................................... 685
Create Policy Maps...................................................................................................................................................687
Enabling QoS Rate Adjustment................................................................................................................................... 690
Enabling Strict-Priority Queueing............................................................................................................................... 690
Queue Classification Requirements for PFC Functionality....................................................................................691
Support for marking dot1p value in L3 Input Qos Policy........................................................................................691
Weighted Random Early Detection.............................................................................................................................692
Enabling and Disabling WRED Globally................................................................................................................ 692
Creating WRED Profiles.......................................................................................................................................... 693
Applying a WRED Profile to Traffic...................................................................................................................... 693
Displaying Default and Configured WRED Profiles........................................................................................... 693
Displaying WRED Drop Statistics.......................................................................................................................... 693
Displaying egressqueue Statistics...................................................................................................................... 694
Pre-Calculating Available QoS CAM Space..............................................................................................................694
Specifying Policy-Based Rate Shaping in Packets Per Second.......................................................................... 695
Configuring Policy-Based Rate Shaping....................................................................................................................696
Configuring Weights and ECN for WRED ................................................................................................................696
Configuring WRED and ECN Attributes.................................................................................................................... 698
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