Users Guide

Enabling PVST+.............................................................................................................................................................695
Disabling PVST+............................................................................................................................................................ 696
Influencing PVST+ Root Selection..............................................................................................................................696
Modifying Global PVST+ Parameters.........................................................................................................................698
Modifying Interface PVST+ Parameters.................................................................................................................... 699
Configuring an EdgePort.............................................................................................................................................. 700
PVST+ in Multi-Vendor Networks.............................................................................................................................. 700
Enabling PVST+ Extend System ID.............................................................................................................................700
PVST+ Sample Configurations..................................................................................................................................... 701
42 Quality of Service (QoS)..........................................................................................................................704
Implementation Information......................................................................................................................................... 706
Port-Based QoS Configurations..................................................................................................................................706
Setting dot1p Priorities for Incoming Traffic........................................................................................................706
Honoring dot1p Priorities on Ingress Traffic.........................................................................................................707
Configuring Port-Based Rate Policing.................................................................................................................. 708
Configuring Port-Based Rate Shaping..................................................................................................................708
Policy-Based QoS Configurations............................................................................................................................... 709
Classify Traffic......................................................................................................................................................... 709
Create a QoS Policy................................................................................................................................................. 713
Create Policy Maps.................................................................................................................................................. 715
DSCP Color Maps.....................................................................................................................................................719
Enabling QoS Rate Adjustment.................................................................................................................................... 721
Enabling Strict-Priority Queueing.................................................................................................................................721
Weighted Random Early Detection............................................................................................................................. 722
Creating WRED Profiles..........................................................................................................................................723
Applying a WRED Profile to Traffic....................................................................................................................... 723
Displaying Default and Configured WRED Profiles..............................................................................................723
Displaying WRED Drop Statistics...........................................................................................................................724
Displaying egress–queue Statistics....................................................................................................................... 724
Pre-Calculating Available QoS CAM Space................................................................................................................724
Configuring Weights and ECN for WRED ................................................................................................................. 725
Global Service Pools With WRED and ECN Settings..........................................................................................726
Configuring WRED and ECN Attributes......................................................................................................................727
Guidelines for Configuring ECN for Classifying and Color-Marking Packets.........................................................728
Sample configuration to mark non-ecn packets as “yellow” with Multiple traffic class.................................728
Classifying Incoming Packets Using ECN and Color-Marking........................................................................... 729
Sample configuration to mark non-ecn packets as “yellow” with single traffic class......................................731
Applying Layer 2 Match Criteria on a Layer 3 Interface..................................................................................... 732
Applying DSCP and VLAN Match Criteria on a Service Queue.........................................................................732
Enabling Buffer Statistics Tracking ............................................................................................................................ 733
43 Routing Information Protocol (RIP)......................................................................................................... 736
Protocol Overview.........................................................................................................................................................736
RIPv1..........................................................................................................................................................................736
RIPv2.........................................................................................................................................................................736
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