Users Guide
Configuring CoPP for Protocols............................................................................................................................239
Examples of Configuring CoPP for Protocols......................................................................................................240
Configuring CoPP for CPU Queues.......................................................................................................................241
Examples of Configuring CoPP for CPU Queues................................................................................................242
Displaying CoPP Configuration..............................................................................................................................243
Troubleshooting CoPP Operation................................................................................................................................246
Enabling CPU Traffic Statistics............................................................................................................................. 246
Viewing CPU Traffic Statistics.............................................................................................................................. 246
Troubleshooting CPU Packet Loss........................................................................................................................247
Viewing Per-Protocol CoPP Counters..................................................................................................................248
Viewing Per-Queue CoPP Counters......................................................................................................................251
11 Data Center Bridging (DCB)..................................................................................................................... 252
Enabling Data Center Bridging.....................................................................................................................................252
Ethernet Enhancements in Data Center Bridging.....................................................................................................253
Priority-Based Flow Control...................................................................................................................................254
Enhanced Transmission Selection.........................................................................................................................255
Data Center Bridging Exchange Protocol (DCBx)..............................................................................................256
Data Center Bridging in a Traffic Flow................................................................................................................. 256
QoS dot1p Traffic Classification and Queue Assignment......................................................................................... 257
SNMP Support for PFC and Buffer Statistics Tracking...........................................................................................257
DCB Maps and its Attributes....................................................................................................................................... 258
DCB Map: Configuration Procedure..................................................................................................................... 258
Important Points to Remember.............................................................................................................................259
Applying a DCB Map on a Port..............................................................................................................................259
Configuring PFC without a DCB Map...................................................................................................................260
Configuring Lossless Queues.................................................................................................................................260
Applying a DCB Map on a Line Card......................................................................................................................261
Data Center Bridging: Default Configuration............................................................................................................. 262
Configuration Notes: PFC and ETS in a DCB Map................................................................................................... 262
PFC Configuration Notes....................................................................................................................................... 262
ETS Configuration Notes........................................................................................................................................263
ETS Prerequisites and Restrictions.......................................................................................................................264
Priority-Group Configuration Notes......................................................................................................................264
Configuring Priority-Based Flow Control....................................................................................................................264
Configuring Lossless Queues.................................................................................................................................265
Configuring Enhanced Transmission Selection..........................................................................................................266
Creating an ETS Priority Group............................................................................................................................. 266
ETS Operation with DCBx......................................................................................................................................267
Configure a DCBx Operation........................................................................................................................................267
DCBx Operation.......................................................................................................................................................268
DCBx Port Roles......................................................................................................................................................268
DCB Configuration Exchange................................................................................................................................ 269
Configuration Source Election............................................................................................................................... 270
Propagation of DCB Information........................................................................................................................... 270
Auto-Detection and Manual Configuration of the DCBx Version...................................................................... 271
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