Install Guide

Table Of Contents
Encapsulated Remote Port Monitoring..................................................................................................................... 588
ERPM Behavior on a typical Dell EMC Networking OS ....................................................................................... 589
Port Monitoring on VLT................................................................................................................................................ 590
Chapter 39: Per-VLAN Spanning Tree Plus (PVST+)..................................................................593
Protocol Overview..........................................................................................................................................................593
Implementation Information......................................................................................................................................... 594
Configure Per-VLAN Spanning Tree Plus.................................................................................................................595
Enabling PVST+.............................................................................................................................................................. 595
Disabling PVST+..............................................................................................................................................................595
Influencing PVST+ Root Selection............................................................................................................................. 596
Modifying Global PVST+ Parameters.........................................................................................................................597
Modifying Interface PVST+ Parameters................................................................................................................... 597
Configuring an EdgePort...............................................................................................................................................598
PVST+ in Multi-Vendor Networks..............................................................................................................................599
Enabling PVST+ Extend System ID............................................................................................................................599
PVST+ Sample Configurations.................................................................................................................................... 600
Chapter 40: Quality of Service (QoS).........................................................................................601
Implementation Information......................................................................................................................................... 603
Port-Based QoS Configurations..................................................................................................................................603
Setting dot1p Priorities for Incoming Traffic......................................................................................................603
Honoring dot1p Priorities on Ingress Traffic.......................................................................................................603
Configuring Port-Based Rate Policing................................................................................................................. 604
Configuring Port-Based Rate Shaping.................................................................................................................604
Policy-Based QoS Configurations...............................................................................................................................605
Classify Traffic...........................................................................................................................................................605
Dot1p to Queue Mapping Requirement................................................................................................................607
Create a QoS Policy................................................................................................................................................. 608
DSCP Color Maps......................................................................................................................................................610
Create Policy Maps................................................................................................................................................... 612
Enabling QoS Rate Adjustment.................................................................................................................................... 615
Enabling Strict-Priority Queueing................................................................................................................................615
Queue Classification Requirements for PFC Functionality....................................................................................616
Support for marking dot1p value in L3 Input Qos Policy........................................................................................616
Weighted Random Early Detection..............................................................................................................................617
Creating WRED Profiles........................................................................................................................................... 617
Applying a WRED Profile to Traffic....................................................................................................................... 618
Displaying Default and Configured WRED Profiles............................................................................................ 618
Displaying WRED Drop Statistics...........................................................................................................................618
Displaying egressqueue Statistics.......................................................................................................................618
Pre-Calculating Available QoS CAM Space...............................................................................................................618
Specifying Policy-Based Rate Shaping in Packets Per Second........................................................................... 619
Configuring Policy-Based Rate Shaping....................................................................................................................620
Configuring Weights and ECN for WRED ................................................................................................................620
Configuring WRED and ECN Attributes.................................................................................................................... 622
Guidelines for Configuring ECN for Classifying and Color-Marking Packets...................................................622
Sample configuration to mark non-ecn packets as yellow with Multiple traffic class..........................623
Classifying Incoming Packets Using ECN and Color-Marking........................................................................623
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Contents