Users Guide

Modifying Global PVST+ Parameters................................................................................................................. 613
Modifying Interface PVST+ Parameters.............................................................................................................614
Configuring an EdgePort...................................................................................................................................... 615
PVST+ in Multi-Vendor Networks.......................................................................................................................615
Enabling PVST+ Extend System ID..................................................................................................................... 616
PVST+ Sample Configurations............................................................................................................................ 616
41 Quality of Service (QoS)...................................................................................................................................619
Implementation Information................................................................................................................................621
Port-Based QoS Configurations......................................................................................................................... 621
Setting dot1p Priorities for Incoming Traffic...............................................................................................621
Honoring dot1p Priorities on Ingress Traffic.............................................................................................. 622
Configuring Port-Based Rate Policing.........................................................................................................623
Configuring Port-Based Rate Shaping.........................................................................................................623
Policy-Based QoS Configurations......................................................................................................................624
Classify Traffic...................................................................................................................................................624
Create a QoS Policy.........................................................................................................................................627
Create Policy Maps.......................................................................................................................................... 629
DSCP Color Maps...................................................................................................................................................633
Creating a DSCP Color Map...........................................................................................................................633
Displaying DSCP Color Maps.........................................................................................................................634
Displaying a DSCP Color Policy Configuration ........................................................................................ 634
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...............................................................................................................639
Pre-Calculating Available QoS CAM Space......................................................................................................639
Configuring Weights and ECN for WRED ........................................................................................................640
Global Service Pools With WRED and ECN Settings.................................................................................641
Configuring WRED and ECN Attributes.............................................................................................................642
Guidelines for Configuring ECN for Classifying and Color-Marking Packets...........................................643
Sample configuration to mark non-ecn packets as “yellow” with Multiple traffic class...................643
Classifying Incoming Packets Using ECN and Color-Marking...............................................................644
Sample configuration to mark non-ecn packets as “yellow” with single traffic class.......................645
Applying Layer 2 Match Criteria on a Layer 3 Interface.................................................................................647
Applying DSCP and VLAN Match Criteria on a Service Queue.................................................................... 647
Classifying Incoming Packets Using ECN and Color-Marking.....................................................................648
Guidelines for Configuring ECN for Classifying and Color-Marking Packets...........................................650
Sample configuration to mark non-ecn packets as “yellow” with Multiple traffic class.........................650
Sample configuration to mark non-ecn packets as “yellow” with single traffic class............................. 651
42 Routing Information Protocol (RIP).............................................................................................................. 653
Protocol Overview................................................................................................................................................. 653
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