Administrator Guide

Unified Forwarding Table (UFT) Modes........................................................................................................................ 225
Configuring UFT Modes............................................................................................................................................. 226
11 Control Plane Policing (CoPP).................................................................................................. 227
Configure Control Plane Policing.....................................................................................................................................228
Configuring CoPP for Protocols................................................................................................................................229
Configuring CoPP for CPU Queues..........................................................................................................................230
Protocol to CPU Queue Mapping.............................................................................................................................. 231
Configuring Protocol to CPU Queue Mapping........................................................................................................ 232
Displaying CoPP Configuration .................................................................................................................................232
12 Data Center Bridging (DCB)..................................................................................................... 234
Ethernet Enhancements in Data Center Bridging.........................................................................................................234
Priority-Based Flow Control.......................................................................................................................................235
Enhanced Transmission Selection.............................................................................................................................236
Data Center Bridging Exchange Protocol (DCBx).................................................................................................. 237
Data Center Bridging in a Traffic Flow..................................................................................................................... 237
Enabling Data Center Bridging.........................................................................................................................................238
DCB Maps and its Attributes..................................................................................................................................... 238
Data Center Bridging: Default Configuration.................................................................................................................239
Configuring Priority-Based Flow Control....................................................................................................................... 239
Configuring Lossless Queues...........................................................................................................................................240
Configuring PFC in a DCB Map........................................................................................................................................241
Configuring PFC without a DCB Map............................................................................................................................ 242
Priority-Based Flow Control Using Dynamic Buffer Method.................................................................................244
Behavior of Tagged Packets............................................................................................................................................244
Configuration Example for DSCP and PFC Priorities................................................................................................... 245
SNMP Support for PFC and Buffer Statistics Tracking.............................................................................................. 246
Performing PFC Using DSCP Bits Instead of 802.1p Bits............................................................................................246
PFC and ETS Configuration Examples........................................................................................................................... 247
Using PFC to Manage Converged Ethernet Traffic..................................................................................................... 247
Operations on Untagged Packets...................................................................................................................................248
Generation of PFC for a Priority for Untagged Packets..............................................................................................248
Configure Enhanced Transmission Selection.................................................................................................................248
ETS Prerequisites and Restrictions...........................................................................................................................248
Creating an ETS Priority Group................................................................................................................................. 248
ETS Operation with DCBx..........................................................................................................................................249
Configuring Bandwidth Allocation for DCBx CIN....................................................................................................250
Configuring ETS in a DCB Map................................................................................................................................. 250
Hierarchical Scheduling in ETS Output Policies............................................................................................................. 251
Using ETS to Manage Converged Ethernet Traffic..................................................................................................... 252
Applying DCB Policies in a Switch Stack....................................................................................................................... 252
Configure a DCBx Operation........................................................................................................................................... 252
DCBx Operation...........................................................................................................................................................252
DCBx Port Roles..........................................................................................................................................................253
DCB Configuration Exchange....................................................................................................................................254
Configuration Source Election...................................................................................................................................254
Propagation of DCB Information...............................................................................................................................255
Auto-Detection and Manual Configuration of the DCBx Version......................................................................... 255
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