Reference Guide

36 Per-VLAN Spanning Tree Plus (PVST+).........................................................635
Protocol Overview............................................................................................................................635
Implementation Information............................................................................................................636
Configure Per-VLAN Spanning Tree Plus........................................................................................ 636
Related Configuration Tasks...................................................................................................... 636
Enabling PVST+.................................................................................................................................637
Disabling PVST+................................................................................................................................637
Influencing PVST+ Root Selection................................................................................................... 637
Modifying Global PVST+ Parameters...............................................................................................639
Modifying Interface PVST+ Parameters...........................................................................................640
Configuring an EdgePort.................................................................................................................. 641
PVST+ in Multi-Vendor Networks....................................................................................................642
Enabling PVST+ Extend System ID...................................................................................................642
PVST+ Sample Configurations.........................................................................................................643
37 Quality of Service (QoS)................................................................................... 645
Implementation Information............................................................................................................647
Port-Based QoS Configurations...................................................................................................... 647
Setting dot1p Priorities for Incoming Traffic............................................................................. 648
Honoring dot1p Priorities on Ingress Traffic............................................................................. 648
Configuring Port-Based Rate Policing.......................................................................................649
Configuring Port-Based Rate Shaping.......................................................................................649
Policy-Based QoS Configurations................................................................................................... 650
Classify Traffic..............................................................................................................................651
Create a QoS Policy....................................................................................................................654
Create Policy Maps..................................................................................................................... 656
Enabling QoS Rate Adjustment........................................................................................................659
Enabling Strict-Priority Queueing....................................................................................................660
Weighted Random Early Detection................................................................................................. 660
Creating WRED Profiles...............................................................................................................661
Applying a WRED Profile to Traffic............................................................................................. 661
Displaying Default and Configured WRED Profiles................................................................... 662
Displaying WRED Drop Statistics................................................................................................662
Pre-Calculating Available QoS CAM Space.....................................................................................662
Configuring Weights and ECN for WRED .......................................................................................663
Global Service Pools With WRED and ECN Settings................................................................. 664
Configuring WRED and ECN Attributes........................................................................................... 665
Classifying Layer 2 Traffic on Layer 3 Interfaces ............................................................................ 667
Classifying Packets Based on a Combination of DSCP Code Points and VLAN IDs......................667
38 Routing Information Protocol (RIP)..............................................................669