Table of Contents
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QoS dot1p Traffic Classification and Queue Assignment............................................. 296
SNMP Support for PFC and Buffer Statistics Tracking....................................................297
DCB Maps and its Attributes................................................................................................ 298
DCB Map: Configuration Procedure............................................................................298
Important Points to Remember.................................................................................... 299
Applying a DCB Map on a Port......................................................................................299
Configuring PFC without a DCB Map..........................................................................300
Configuring Lossless Queues........................................................................................ 301
Applying a DCB Map on a Line Card............................................................................302
Data Center Bridging: Default Configuration.................................................................. 302
Configuration Notes: PFC and ETS in a DCB Map..........................................................303
PFC Configuration Notes............................................................................................... 303
ETS Configuration Notes................................................................................................304
ETS Prerequisites and Restrictions............................................................................... 305
Priority-Group Configuration Notes............................................................................ 305
Configuring Priority-Based Flow Control.........................................................................306
Configuring Lossless Queues........................................................................................ 307
Configuring Enhanced Transmission Selection.............................................................. 308
Creating an ETS Priority Group..................................................................................... 308
ETS Operation with DCBx.............................................................................................. 309
Configure a DCBx Operation...............................................................................................310
DCBx Operation................................................................................................................310
DCBx Port Roles............................................................................................................... 310
DCB Configuration Exchange........................................................................................312
Configuration Source Election...................................................................................... 313
Propagation of DCB Information.................................................................................. 313
Auto-Detection and Manual Configuration of the DCBx Version......................... 314
Behavior of Tagged Packets...........................................................................................314
Configuration Example for DSCP and PFC Priorities................................................ 315
DCBx Example...................................................................................................................316
DCBx Prerequisites and Restrictions.............................................................................317
Configuring DCBx.............................................................................................................317
Verifying the DCB Configuration.........................................................................................321
Performing PFC Using DSCP Bits Instead of 802.1p Bits...............................................332
PFC and ETS Configuration Examples............................................................................... 333
Using PFC and ETS to Manage Data Center Traffic........................................................333
PFC and ETS Configuration Command Examples.................................................... 335
Using PFC and ETS to Manage Converged Ethernet Traffic...................................336
Hierarchical Scheduling in ETS Output Policies........................................................ 336
Priority-Based Flow Control Using Dynamic Buffer Method........................................337
Pause and Resume of Traffic......................................................................................... 337
Buffer Sizes for Lossless or PFC Packets..................................................................... 337
Version 9.10(0.0)
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