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Conguring UFT Modes..........................................................................................................................................246
11 Control Plane Policing (CoPP).................................................................................................................. 247
Congure Control Plane Policing................................................................................................................................. 248
Conguring CoPP for Protocols............................................................................................................................ 249
Conguring CoPP for CPU Queues....................................................................................................................... 251
Protocol to CPU Queue Mapping..........................................................................................................................252
Conguring Protocol to CPU Queue Mapping.....................................................................................................252
Displaying CoPP Conguration ............................................................................................................................. 253
12 Data Center Bridging (DCB).....................................................................................................................255
Ethernet Enhancements in Data Center Bridging..................................................................................................... 255
Priority-Based Flow Control................................................................................................................................... 256
Enhanced Transmission Selection..........................................................................................................................257
Data Center Bridging Exchange Protocol (DCBx)...............................................................................................258
Data Center Bridging in a Trac Flow.................................................................................................................. 259
Enabling Data Center Bridging.....................................................................................................................................259
DCB Maps and its Attributes................................................................................................................................. 260
Data Center Bridging: Default Conguration..............................................................................................................260
Conguring Priority-Based Flow Control.....................................................................................................................261
Conguring Lossless Queues................................................................................................................................. 262
Conguring PFC in a DCB Map................................................................................................................................... 263
PFC Conguration Notes........................................................................................................................................263
PFC Prerequisites and Restrictions....................................................................................................................... 264
Applying a DCB Map on a Port.................................................................................................................................... 264
Conguring PFC without a DCB Map.........................................................................................................................265
Priority-Based Flow Control Using Dynamic Buer Method................................................................................... 265
Pause and Resume of Trac..................................................................................................................................265
Buer Sizes for Lossless or PFC Packets............................................................................................................ 266
Shared headroom for lossless or PFC packets.......................................................................................................... 266
Example Scenario.....................................................................................................................................................267
Conguring Shared Head Room Buer................................................................................................................ 268
Viewing Shared Head Room Usage.......................................................................................................................268
Monitoring Buer Statistics for Tracking Purposes............................................................................................ 269
Behavior of Tagged Packets.........................................................................................................................................269
SNMP Support for PFC and Buer Statistics Tracking............................................................................................270
Performing PFC Using DSCP Bits Instead of 802.1p Bits.........................................................................................270
Conguration Example for DSCP and PFC Priorities.................................................................................................271
Using PFC to Manage Converged Ethernet Trac....................................................................................................271
Generation of PFC for a Priority for Untagged Packets............................................................................................271
Congure Enhanced Transmission Selection..............................................................................................................272
Creating an ETS Priority Group..............................................................................................................................272
ETS Operation with DCBx...................................................................................................................................... 273
Conguring ETS in a DCB Map..............................................................................................................................273
Hierarchical Scheduling in ETS Output Policies......................................................................................................... 275
Using ETS to Manage Converged Ethernet Trac................................................................................................... 275
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