White Papers

39 Quality of Service (QoS)..........................................................................................................................692
Implementation Information..........................................................................................................................................694
Port-Based QoS Congurations.................................................................................................................................. 694
Setting dot1p Priorities for Incoming Trac.........................................................................................................694
Honoring dot1p Priorities on Ingress Trac..........................................................................................................695
Conguring Port-Based Rate Policing.................................................................................................................. 696
Conguring Port-Based Rate Shaping..................................................................................................................696
Policy-Based QoS Congurations................................................................................................................................697
Classify Trac.......................................................................................................................................................... 697
Dot1p to Queue Mapping Requirement..................................................................................................................701
Create a QoS Policy..................................................................................................................................................701
DSCP Color Maps....................................................................................................................................................704
Create Policy Maps..................................................................................................................................................706
Enabling QoS Rate Adjustment....................................................................................................................................709
Enabling Strict-Priority Queueing.................................................................................................................................710
Queue Classication Requirements for PFC Functionality........................................................................................710
Support for marking dot1p value in L3 Input Qos Policy............................................................................................710
Weighted Random Early Detection............................................................................................................................... 711
Creating WRED Proles...........................................................................................................................................712
Applying a WRED Prole to Trac.........................................................................................................................712
Displaying Default and Congured WRED Proles...............................................................................................713
Displaying WRED Drop Statistics............................................................................................................................713
Displaying egress–queue Statistics........................................................................................................................ 713
Pre-Calculating Available QoS CAM Space.................................................................................................................714
Specifying Policy-Based Rate Shaping in Packets Per Second................................................................................715
Conguring Policy-Based Rate Shaping......................................................................................................................715
Conguring Weights and ECN for WRED .................................................................................................................. 716
Global Service Pools With WRED and ECN Settings...........................................................................................716
Conguring WRED and ECN Attributes.......................................................................................................................717
Guidelines for Conguring ECN for Classifying and Color-Marking Packets..........................................................718
Sample conguration to mark non-ecn packets as “yellow” with Multiple trac class.................................. 719
Classifying Incoming Packets Using ECN and Color-Marking............................................................................ 719
Sample conguration to mark non-ecn packets as “yellow” with single trac class.......................................721
Applying Layer 2 Match Criteria on a Layer 3 Interface............................................................................................722
Managing Hardware Buer Statistics................................................................................................................... 722
Enabling Buer Statistics Tracking ............................................................................................................................. 723
40 Routing Information Protocol (RIP)......................................................................................................... 726
Protocol Overview......................................................................................................................................................... 726
RIPv1..........................................................................................................................................................................726
RIPv2.........................................................................................................................................................................726
Implementation Information.......................................................................................................................................... 727
Conguration Information............................................................................................................................................. 727
Conguration Task List............................................................................................................................................ 727
RIP Conguration Example.....................................................................................................................................734
Contents
23