QoS dot1p Traffic Classification and Queue Assignment............................................. 296SNMP Support for PFC and Buffer Statistics Tracking....................................................297DCB Maps and its Attributes................................................................................................ 298DCB Map: Configuration Procedure............................................................................298Important Points to Remember.................................................................................... 299Applying a DCB Map on a Port......................................................................................299Configuring PFC without a DCB Map..........................................................................300Configuring Lossless Queues........................................................................................ 301Applying a DCB Map on a Line Card............................................................................302Data Center Bridging: Default Configuration.................................................................. 302Configuration Notes: PFC and ETS in a DCB Map..........................................................303PFC Configuration Notes............................................................................................... 303ETS Configuration Notes................................................................................................304ETS Prerequisites and Restrictions............................................................................... 305Priority-Group Configuration Notes............................................................................ 305Configuring Priority-Based Flow Control.........................................................................306Configuring Lossless Queues........................................................................................ 307Configuring Enhanced Transmission Selection.............................................................. 308Creating an ETS Priority Group..................................................................................... 308ETS Operation with DCBx.............................................................................................. 309Configure a DCBx Operation...............................................................................................310DCBx Operation................................................................................................................310DCBx Port Roles............................................................................................................... 310DCB Configuration Exchange........................................................................................312Configuration Source Election...................................................................................... 313Propagation of DCB Information.................................................................................. 313Auto-Detection and Manual Configuration of the DCBx Version......................... 314Behavior of Tagged Packets...........................................................................................314Configuration Example for DSCP and PFC Priorities................................................ 315DCBx Example...................................................................................................................316DCBx Prerequisites and Restrictions.............................................................................317Configuring DCBx.............................................................................................................317Verifying the DCB Configuration.........................................................................................321Performing PFC Using DSCP Bits Instead of 802.1p Bits...............................................332PFC and ETS Configuration Examples............................................................................... 333Using PFC and ETS to Manage Data Center Traffic........................................................333PFC and ETS Configuration Command Examples.................................................... 335Using PFC and ETS to Manage Converged Ethernet Traffic...................................336Hierarchical Scheduling in ETS Output Policies........................................................ 336Priority-Based Flow Control Using Dynamic Buffer Method........................................337Pause and Resume of Traffic......................................................................................... 337Buffer Sizes for Lossless or PFC Packets..................................................................... 337Version 9.10(0.0) 10
