Concept Guide

Unied Forwarding Table (UFT) Modes..................................................................................................................... 250
Conguring UFT Modes......................................................................................................................................... 250
11 Control Plane Policing (CoPP).................................................................................................................. 252
Congure Control Plane Policing................................................................................................................................. 253
Conguring CoPP for Protocols............................................................................................................................ 254
Conguring CoPP for CPU Queues...................................................................................................................... 256
Protocol to CPU Queue Mapping.......................................................................................................................... 257
Conguring Protocol to CPU Queue Mapping.....................................................................................................257
Displaying CoPP Conguration .............................................................................................................................258
12 Data Center Bridging (DCB).....................................................................................................................260
Ethernet Enhancements in Data Center Bridging..................................................................................................... 260
Priority-Based Flow Control....................................................................................................................................261
Enhanced Transmission Selection..........................................................................................................................262
Data Center Bridging Exchange Protocol (DCBx)...............................................................................................263
Data Center Bridging in a Trac Flow...................................................................................................................264
Enabling Data Center Bridging.....................................................................................................................................264
DCB Maps and its Attributes................................................................................................................................. 265
Data Center Bridging: Default Conguration..............................................................................................................266
Conguring Priority-Based Flow Control....................................................................................................................266
Conguring Lossless Queues........................................................................................................................................267
Conguring PFC in a DCB Map................................................................................................................................... 269
PFC Conguration Notes....................................................................................................................................... 269
PFC Prerequisites and Restrictions....................................................................................................................... 270
Conguring PFC without a DCB Map.........................................................................................................................270
Conguring Lossless QueuesExample:..................................................................................................................270
Priority-Based Flow Control Using Dynamic Buer Method..............................................................................272
Behavior of Tagged Packets......................................................................................................................................... 273
Conguration Example for DSCP and PFC Priorities................................................................................................273
SNMP Support for PFC and Buer Statistics Tracking............................................................................................ 274
Performing PFC Using DSCP Bits Instead of 802.1p Bits.........................................................................................275
PFC and ETS Conguration Examples........................................................................................................................275
Using PFC to Manage Converged Ethernet Trac...................................................................................................275
Operations on Untagged Packets................................................................................................................................ 276
Generation of PFC for a Priority for Untagged Packets........................................................................................... 276
Congure Enhanced Transmission Selection..............................................................................................................276
ETS Prerequisites and Restrictions........................................................................................................................276
Creating an ETS Priority Group..............................................................................................................................277
ETS Operation with DCBx...................................................................................................................................... 278
Conguring Bandwidth Allocation for DCBx CIN.................................................................................................278
Conguring ETS in a DCB Map..............................................................................................................................279
Hierarchical Scheduling in ETS Output Policies.........................................................................................................280
Using ETS to Manage Converged Ethernet Trac....................................................................................................281
Applying DCB Policies in a Switch Stack.....................................................................................................................281
Congure a DCBx Operation.........................................................................................................................................281
Contents
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