Setup Guide

Table Of Contents
Enabling PVST+...............................................................................................................................................................687
Disabling PVST+..............................................................................................................................................................687
Influencing PVST+ Root Selection............................................................................................................................. 688
Modifying Global PVST+ Parameters........................................................................................................................ 689
Modifying Interface PVST+ Parameters................................................................................................................... 689
Configuring an EdgePort.............................................................................................................................................. 690
PVST+ in Multi-Vendor Networks...............................................................................................................................691
Enabling PVST+ Extend System ID.............................................................................................................................691
PVST+ Sample Configurations.................................................................................................................................... 692
Chapter 42: Quality of Service (QoS)........................................................................................ 694
Implementation Information......................................................................................................................................... 696
Port-Based QoS Configurations..................................................................................................................................696
Setting dot1p Priorities for Incoming Traffic......................................................................................................696
Honoring dot1p Priorities on Ingress Traffic....................................................................................................... 697
Configuring Port-Based Rate Policing................................................................................................................. 697
Configuring Port-Based Rate Shaping.................................................................................................................697
Policy-Based QoS Configurations...............................................................................................................................698
Classify Traffic...........................................................................................................................................................699
Dot1p to Queue Mapping Requirement................................................................................................................ 701
Create a QoS Policy..................................................................................................................................................702
DSCP Color Maps..................................................................................................................................................... 704
Create Policy Maps...................................................................................................................................................706
Enabling QoS Rate Adjustment................................................................................................................................... 709
Enabling Strict-Priority Queueing................................................................................................................................ 710
Queue Classification Requirements for PFC Functionality....................................................................................710
Support for marking dot1p value in L3 Input Qos Policy........................................................................................ 710
Weighted Random Early Detection.............................................................................................................................. 711
Enabling and Disabling WRED Globally..................................................................................................................712
Creating WRED Profiles........................................................................................................................................... 712
Applying a WRED Profile to Traffic....................................................................................................................... 712
Displaying Default and Configured WRED Profiles............................................................................................ 712
Displaying WRED Drop Statistics........................................................................................................................... 712
Displaying egressqueue Statistics....................................................................................................................... 713
Pre-Calculating Available QoS CAM Space............................................................................................................... 713
Specifying Policy-Based Rate Shaping in Packets Per Second............................................................................714
Configuring Policy-Based Rate Shaping.....................................................................................................................715
Configuring Weights and ECN for WRED .................................................................................................................715
Configuring WRED and ECN Attributes..................................................................................................................... 717
Guidelines for Configuring ECN for Classifying and Color-Marking Packets.................................................... 717
Sample configuration to mark non-ecn packets as yellow with Multiple traffic class...........................718
Classifying Incoming Packets Using ECN and Color-Marking.........................................................................718
Sample configuration to mark non-ecn packets as yellow with single traffic class.............................. 720
Applying Layer 2 Match Criteria on a Layer 3 Interface.........................................................................................721
Managing Hardware Buffer Statistics...................................................................................................................721
Enabling Buffer Statistics Tracking ........................................................................................................................... 722
Chapter 43: Routing Information Protocol (RIP)........................................................................724
Protocol Overview.......................................................................................................................................................... 724
Contents
21