Users Guide

Queue-based Control Plane Policing..................................................................................................................... 237
CoPP Example............................................................................................................................................................... 239
Congure Control Plane Policing................................................................................................................................. 240
Conguring CoPP for Protocols............................................................................................................................ 240
Examples of Conguring CoPP for Protocols.......................................................................................................241
Conguring CoPP for CPU Queues...................................................................................................................... 242
Examples of Conguring CoPP for CPU Queues................................................................................................ 243
Displaying CoPP Conguration.............................................................................................................................. 244
Troubleshooting CoPP Operation.................................................................................................................................247
Enabling CPU Trac Statistics...............................................................................................................................247
Viewing CPU Trac Statistics................................................................................................................................247
Troubleshooting CPU Packet Loss........................................................................................................................ 248
Viewing Per-Protocol CoPP Counters.................................................................................................................. 249
Viewing Per-Queue CoPP Counters..................................................................................................................... 252
11 Data Center Bridging (DCB)......................................................................................................................253
Enabling Data Center Bridging.....................................................................................................................................253
Ethernet Enhancements in Data Center Bridging..................................................................................................... 254
Priority-Based Flow Control...................................................................................................................................255
Enhanced Transmission Selection..........................................................................................................................256
Data Center Bridging Exchange Protocol (DCBx)...............................................................................................257
Data Center Bridging in a Trac Flow...................................................................................................................257
QoS dot1p Trac Classication and Queue Assignment..........................................................................................258
SNMP Support for PFC and Buer Statistics Tracking............................................................................................258
DCB Maps and its Attributes........................................................................................................................................259
DCB Map: Conguration Procedure......................................................................................................................259
Important Points to Remember............................................................................................................................. 260
Applying a DCB Map on a Port..............................................................................................................................260
Conguring PFC without a DCB Map....................................................................................................................261
Conguring Lossless Queues.................................................................................................................................. 261
Applying a DCB Map on a Line Card..................................................................................................................... 263
Data Center Bridging: Default Conguration..............................................................................................................263
Conguration Notes: PFC and ETS in a DCB Map....................................................................................................264
PFC Conguration Notes........................................................................................................................................264
ETS Conguration Notes........................................................................................................................................265
ETS Prerequisites and Restrictions....................................................................................................................... 265
Priority-Group Conguration Notes...................................................................................................................... 266
Conguring Priority-Based Flow Control....................................................................................................................266
Conguring Lossless Queues..................................................................................................................................267
Conguring Enhanced Transmission Selection...........................................................................................................267
Creating an ETS Priority Group..............................................................................................................................268
ETS Operation with DCBx......................................................................................................................................269
Congure a DCBx Operation........................................................................................................................................269
DCBx Operation.......................................................................................................................................................269
DCBx Port Roles...................................................................................................................................................... 270
DCB Conguration Exchange................................................................................................................................. 271
Contents
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