Dell S6000-ON Switch User Manual


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Priority-Based Flow Control....................................................................................................... 247
Enhanced Transmission Selection............................................................................................. 249
Data Center Bridging Exchange Protocol (DCBx)..................................................................... 250
Data Center Bridging in a Traffic Flow.......................................................................................250
Enabling Data Center Bridging......................................................................................................... 251
DCB Maps and its Attributes........................................................................................................251
Data Center Bridging: Default Configuration.................................................................................. 252
Configuring Priority-Based Flow Control........................................................................................ 253
Configuring Lossless Queues.....................................................................................................254
Configuring PFC in a DCB Map........................................................................................................ 255
PFC Configuration Notes............................................................................................................255
PFC Prerequisites and Restrictions.............................................................................................257
Applying a DCB Map on a Port......................................................................................................... 257
Configuring PFC without a DCB Map.............................................................................................. 257
Configuring Lossless QueuesExample:......................................................................................258
Priority-Based Flow Control Using Dynamic Buffer Method......................................................... 260
Pause and Resume of Traffic......................................................................................................260
Buffer Sizes for Lossless or PFC Packets................................................................................... 260
Behavior of Tagged Packets............................................................................................................. 261
Configuration Example for DSCP and PFC Priorities...................................................................... 262
SNMP Support for PFC and Buffer Statistics Tracking.....................................................................262
Performing PFC Using DSCP Bits Instead of 802.1p Bits................................................................ 263
PFC and ETS Configuration Examples.............................................................................................264
Using PFC to Manage Converged Ethernet Traffic......................................................................... 264
Operations on Untagged Packets....................................................................................................264
Generation of PFC for a Priority for Untagged Packets.................................................................. 265
Configure Enhanced Transmission Selection..................................................................................265
ETS Prerequisites and Restrictions............................................................................................. 265
Creating an ETS Priority Group.................................................................................................. 266
ETS Operation with DCBx...........................................................................................................267
Configuring Bandwidth Allocation for DCBx CIN..................................................................... 268
Configuring ETS in a DCB Map.................................................................................................. 269
Hierarchical Scheduling in ETS Output Policies.............................................................................. 270
Using ETS to Manage Converged Ethernet Traffic.......................................................................... 271
Applying DCB Policies in a Switch Stack.......................................................................................... 271
Configure a DCBx Operation............................................................................................................271
DCBx Operation.......................................................................................................................... 272
DCBx Port Roles..........................................................................................................................272
DCB Configuration Exchange.................................................................................................... 274
Configuration Source Election................................................................................................... 274
Propagation of DCB Information................................................................................................275
Auto-Detection and Manual Configuration of the DCBx Version............................................ 275
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