Administrator Guide

ManualsBrandsDell ManualsAccess PlatformsNetworking S3100 Series

Implementation Information..............................................................................................................................................615

Configure Per-VLAN Spanning Tree Plus.......................................................................................................................615

Enabling PVST+................................................................................................................................................................. 615

Disabling PVST+.................................................................................................................................................................615

Influencing PVST+ Root Selection.................................................................................................................................. 616

Modifying Global PVST+ Parameters..............................................................................................................................617

Modifying Interface PVST+ Parameters.........................................................................................................................618

Configuring an EdgePort...................................................................................................................................................618

PVST+ in Multi-Vendor Networks...................................................................................................................................619

Enabling PVST+ Extend System ID.................................................................................................................................619

PVST+ Sample Configurations........................................................................................................................................620

43 Quality of Service (QoS)......................................................................................................... 622

Implementation Information.............................................................................................................................................624

Port-Based QoS Configurations......................................................................................................................................624

Setting dot1p Priorities for Incoming Traffic............................................................................................................624

Honoring dot1p Priorities on Ingress Traffic............................................................................................................ 625

Configuring Port-Based Rate Policing......................................................................................................................625

Configuring Port-Based Rate Shaping..................................................................................................................... 626

Policy-Based QoS Configurations...................................................................................................................................626

Classify Traffic............................................................................................................................................................. 627

Create a QoS Policy....................................................................................................................................................629

Create Policy Maps......................................................................................................................................................631

DSCP Color Maps............................................................................................................................................................. 634

Creating a DSCP Color Map...................................................................................................................................... 634

Displaying DSCP Color Maps.....................................................................................................................................635

Displaying a DSCP Color Policy Configuration ....................................................................................................... 635

Enabling QoS Rate Adjustment.......................................................................................................................................635

Enabling Strict-Priority Queueing....................................................................................................................................636

Weighted Random Early Detection.................................................................................................................................636

Creating WRED Profiles..............................................................................................................................................637

Applying a WRED Profile to Traffic...........................................................................................................................637

Displaying Default and Configured WRED Profiles................................................................................................. 638

Displaying WRED Drop Statistics.............................................................................................................................. 638

Displaying egress–queue Statistics...........................................................................................................................638

Pre-Calculating Available QoS CAM Space................................................................................................................... 639

Configuring Weights and ECN for WRED .....................................................................................................................639

Configuring WRED and ECN Attributes..........................................................................................................................641

Guidelines for Configuring ECN for Classifying and Color-Marking Packets.............................................................641

Sample configuration to mark non-ecn packets as “yellow” with Multiple traffic class.................................... 642

Classifying Incoming Packets Using ECN and Color-Marking...............................................................................642

Sample configuration to mark non-ecn packets as “yellow” with single traffic class........................................ 644

Applying Layer 2 Match Criteria on a Layer 3 Interface.............................................................................................. 645

Applying DSCP and VLAN Match Criteria on a Service Queue.................................................................................. 645

Classifying Incoming Packets Using ECN and Color-Marking.....................................................................................646

Guidelines for Configuring ECN for Classifying and Color-Marking Packets............................................................ 647

Sample configuration to mark non-ecn packets as “yellow” with Multiple traffic class.......................................... 648

Sample configuration to mark non-ecn packets as “yellow” with single traffic class.............................................. 648

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