Priority-Based Flow Control.......................................................................................... 295
Enhanced Transmission Selection................................................................................296
Data Center Bridging Exchange Protocol (DCBx).....................................................297
Data Center Bridging in a Traffic Flow........................................................................ 298
Enabling Data Center Bridging............................................................................................298
DCB Maps and its Attributes.......................................................................................... 299
Data Center Bridging: Default Configuration.................................................................. 300
Configuring Priority-Based Flow Control......................................................................... 301
Configuring Lossless Queues........................................................................................302
Configuring PFC in a DCB Map...........................................................................................303
PFC Configuration Notes............................................................................................... 303
PFC Prerequisites and Restrictions...............................................................................304
Applying a DCB Map on a Port............................................................................................305
Configuring PFC without a DCB Map................................................................................305
Configuring Lossless QueuesExample:.......................................................................306
Priority-Based Flow Control Using Dynamic Buffer Method....................................... 308
Pause and Resume of Traffic.........................................................................................308
Buffer Sizes for Lossless or PFC Packets.....................................................................309
Behavior of Tagged Packets................................................................................................309
Configuration Example for DSCP and PFC Priorities......................................................310
Using PFC to Manage Converged Ethernet Traffic..........................................................311
Configure Enhanced Transmission Selection...................................................................311
ETS Prerequisites and Restrictions................................................................................ 311
Creating an ETS Priority Group......................................................................................312
ETS Operation with DCBx...............................................................................................313
Configuring Bandwidth Allocation for DCBx CIN..................................................... 314
Configuring ETS in a DCB Map......................................................................................315
Hierarchical Scheduling in ETS Output Policies.............................................................. 316
Using ETS to Manage Converged Ethernet Traffic..........................................................317
Applying DCB Policies in a Switch Stack........................................................................... 317
Configure a DCBx Operation...............................................................................................318
DCBx Operation................................................................................................................318
DCBx Port Roles................................................................................................................318
DCB Configuration Exchange....................................................................................... 320
Configuration Source Election...................................................................................... 321
Propagation of DCB Information.................................................................................. 321
Auto-Detection and Manual Configuration of the DCBx Version......................... 322
DCBx Example.................................................................................................................. 322
DCBx Prerequisites and Restrictions............................................................................323
Configuring DCBx............................................................................................................ 323
Verifying the DCB Configuration........................................................................................ 327
QoS dot1p Traffic Classification and Queue Assignment............................................. 338
9.10(0.1)
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