Dell S4048T-ON User Manual

Conguring CoPP for OSPFv3.............................................................................................................................. 249
Displaying CoPP Conguration ............................................................................................................................. 249
12 Data Center Bridging (DCB)..................................................................................................................... 252
Ethernet Enhancements in Data Center Bridging..................................................................................................... 252
Priority-Based Flow Control................................................................................................................................... 253
Enhanced Transmission Selection..........................................................................................................................254
Data Center Bridging Exchange Protocol (DCBx)...............................................................................................255
Data Center Bridging in a Trac Flow.................................................................................................................. 256
Enabling Data Center Bridging.....................................................................................................................................256
DCB Maps and its Attributes..................................................................................................................................257
Data Center Bridging: Default Conguration..............................................................................................................258
Conguring Priority-Based Flow Control....................................................................................................................258
Conguring Lossless Queues................................................................................................................................. 259
Conguring PFC in a DCB Map................................................................................................................................... 260
PFC Conguration Notes....................................................................................................................................... 260
PFC Prerequisites and Restrictions........................................................................................................................261
Applying a DCB Map on a Port.....................................................................................................................................261
Conguring PFC without a DCB Map.........................................................................................................................262
Conguring Lossless QueuesExample:..................................................................................................................262
Priority-Based Flow Control Using Dynamic Buer Method....................................................................................264
Pause and Resume of Trac..................................................................................................................................264
Buer Sizes for Lossless or PFC Packets............................................................................................................ 264
Behavior of Tagged Packets.........................................................................................................................................265
Conguration Example for DSCP and PFC Priorities................................................................................................265
Using PFC to Manage Converged Ethernet Trac.................................................................................................. 266
Congure Enhanced Transmission Selection..............................................................................................................266
ETS Prerequisites and Restrictions....................................................................................................................... 266
Creating an ETS Priority Group............................................................................................................................. 266
ETS Operation with DCBx......................................................................................................................................268
Conguring Bandwidth Allocation for DCBx CIN................................................................................................ 268
Conguring ETS in a DCB Map..............................................................................................................................269
Hierarchical Scheduling in ETS Output Policies......................................................................................................... 270
Using ETS to Manage Converged Ethernet Trac....................................................................................................271
Applying DCB Policies in a Switch Stack..................................................................................................................... 271
Congure a DCBx Operation.........................................................................................................................................271
DCBx Operation........................................................................................................................................................271
DCBx Port Roles...................................................................................................................................................... 272
DCB Conguration Exchange.................................................................................................................................273
Conguration Source Election................................................................................................................................273
Propagation of DCB Information............................................................................................................................274
Auto-Detection and Manual Conguration of the DCBx Version.......................................................................274
DCBx Example..........................................................................................................................................................275
DCBx Prerequisites and Restrictions.....................................................................................................................275
Conguring DCBx.................................................................................................................................................... 275
Verifying the DCB Conguration..................................................................................................................................279
Contents
9

Dell S4048T-ON Specifications

General

Switching Capacity	1.44 Tbps
Rack Units	1U
Form Factor	Rack-mountable
Operating Temperature	32 °F to 104 °F (0 °C to 40 °C)
Ports	48 x 10GBase-T, 6 x 40GbE QSFP+
Power Supply	Dual, hot-swappable
Jumbo Frame Support	Yes
OS	Dell Networking OS