Administrator Guide

Conguring CoPP for OSPFv3.............................................................................................................................. 245
Displaying CoPP Conguration ............................................................................................................................. 245
12 Data Center Bridging (DCB)..................................................................................................................... 248
Ethernet Enhancements in Data Center Bridging..................................................................................................... 248
Priority-Based Flow Control................................................................................................................................... 249
Enhanced Transmission Selection..........................................................................................................................250
Data Center Bridging Exchange Protocol (DCBx)................................................................................................251
Data Center Bridging in a Trac Flow...................................................................................................................252
Enabling Data Center Bridging.....................................................................................................................................252
DCB Maps and its Attributes..................................................................................................................................253
Data Center Bridging: Default Conguration..............................................................................................................254
Conguring Priority-Based Flow Control....................................................................................................................254
Conguring Lossless Queues................................................................................................................................. 255
Conguring PFC in a DCB Map................................................................................................................................... 256
PFC Conguration Notes....................................................................................................................................... 256
PFC Prerequisites and Restrictions....................................................................................................................... 257
Applying a DCB Map on a Port.................................................................................................................................... 257
Conguring PFC without a DCB Map.........................................................................................................................258
Conguring Lossless QueuesExample:..................................................................................................................258
Priority-Based Flow Control Using Dynamic Buer Method................................................................................... 260
Pause and Resume of Trac..................................................................................................................................260
Buer Sizes for Lossless or PFC Packets............................................................................................................ 260
Behavior of Tagged Packets..........................................................................................................................................261
Conguration Example for DSCP and PFC Priorities.................................................................................................261
Using PFC to Manage Converged Ethernet Trac...................................................................................................262
Congure Enhanced Transmission Selection..............................................................................................................262
ETS Prerequisites and Restrictions....................................................................................................................... 262
Creating an ETS Priority Group..............................................................................................................................262
ETS Operation with DCBx......................................................................................................................................264
Conguring Bandwidth Allocation for DCBx CIN.................................................................................................264
Conguring ETS in a DCB Map..............................................................................................................................265
Hierarchical Scheduling in ETS Output Policies.........................................................................................................266
Using ETS to Manage Converged Ethernet Trac................................................................................................... 267
Applying DCB Policies in a Switch Stack.................................................................................................................... 267
Congure a DCBx Operation........................................................................................................................................ 267
DCBx Operation....................................................................................................................................................... 267
DCBx Port Roles...................................................................................................................................................... 268
DCB Conguration Exchange................................................................................................................................ 269
Conguration Source Election............................................................................................................................... 269
Propagation of DCB Information............................................................................................................................270
Auto-Detection and Manual Conguration of the DCBx Version.......................................................................270
DCBx Example.......................................................................................................................................................... 271
DCBx Prerequisites and Restrictions......................................................................................................................271
Conguring DCBx.....................................................................................................................................................271
Verifying the DCB Conguration..................................................................................................................................275
Contents
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