Reference Guide

ETS Prerequisites and Restrictions............................................................................................. 245
Creating a QoS DCB Output Policy........................................................................................... 245
Creating an ETS Priority Group...................................................................................................247
Applying an ETS Output Policy for a Priority Group to an Interface........................................ 248
ETS Operation with DCBx.......................................................................................................... 249
Configuring Bandwidth Allocation for DCBx CIN..................................................................... 250
Applying DCB Policies in a Switch Stack......................................................................................... 250
Applying DCB Policies with an ETS Configuration...........................................................................251
Configure a DCBx Operation............................................................................................................251
DCBx Operation..........................................................................................................................252
DCBx Port Roles..........................................................................................................................252
DCB Configuration Exchange.................................................................................................... 254
Configuration Source Election...................................................................................................254
Propagation of DCB Information............................................................................................... 255
Auto-Detection and Manual Configuration of the DCBx Version............................................ 255
Behavior of Tagged Packets....................................................................................................... 256
Configuration Example for DSCP and PFC Priorities.................................................................256
DCBx Example.............................................................................................................................257
DCBx Prerequisites and Restrictions..........................................................................................258
Configuring DCBx.......................................................................................................................258
Verifying the DCB Configuration..................................................................................................... 263
Generation of PFC for a Priority for Untagged Packets.................................................................. 274
Operations on Untagged Packets.................................................................................................... 274
Performing PFC Using DSCP Bits Instead of 802.1p Bits.................................................................275
PFC and ETS Configuration Examples............................................................................................. 276
Using PFC and ETS to Manage Data Center Traffic.........................................................................276
PFC and ETS Configuration Command Examples.....................................................................278
Using PFC and ETS to Manage Converged Ethernet Traffic in a Switch Stack........................ 279
Hierarchical Scheduling in ETS Output Policies........................................................................ 279
Configuring DCB Maps and its Attributes........................................................................................280
DCB Map: Configuration Procedure..........................................................................................280
Important Points to Remember..................................................................................................281
Applying a DCB Map on a Port................................................................................................... 281
Configuring PFC without a DCB Map........................................................................................ 282
Configuring Lossless Queues.....................................................................................................283
Data Center Bridging: Default Configuration..................................................................................284
Configuring PFC and ETS in a DCB Map......................................................................................... 284
PFC Configuration Notes........................................................................................................... 284
PFC Prerequisites and Restrictions.............................................................................................285
ETS Configuration Notes............................................................................................................286
ETS Prerequisites and Restrictions.............................................................................................286
Priority-Based Flow Control Using Dynamic Buffer Method..........................................................287