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Table Of Contents
Z9500 CoPP Implementation.......................................................................................................................................209
CoPP Example...................................................................................................................................................................211
Configure Control Plane Policing................................................................................................................................. 212
Configuring CoPP for Protocols.............................................................................................................................212
Examples of Configuring CoPP for Protocols.....................................................................................................214
Configuring CoPP for CPU Queues.......................................................................................................................215
Examples of Configuring CoPP for CPU Queues...............................................................................................216
Displaying CoPP Configuration ..............................................................................................................................217
Troubleshooting CoPP Operation................................................................................................................................ 219
Chapter 12: Data Center Bridging (DCB)....................................................................................226
Ethernet Enhancements in Data Center Bridging...................................................................................................226
Priority-Based Flow Control................................................................................................................................... 227
Enhanced Transmission Selection.........................................................................................................................228
Data Center Bridging Exchange Protocol (DCBx)............................................................................................229
Data Center Bridging in a Traffic Flow................................................................................................................ 230
Priority-Based Flow Control.........................................................................................................................................230
Enhanced Transmission Selection............................................................................................................................... 231
Data Center Bridging Exchange Protocol (DCBx)..................................................................................................232
Enabling Data Center Bridging.....................................................................................................................................232
DCB Maps and its Attributes..................................................................................................................................233
Data Center Bridging: Default Configuration........................................................................................................... 233
Configuring Priority-Based Flow Control.................................................................................................................. 234
Configuring Lossless Queues................................................................................................................................. 234
Configuring PFC in a DCB Map................................................................................................................................... 235
Applying a DCB Map on a Port.................................................................................................................................... 237
Configuring PFC without a DCB Map........................................................................................................................ 237
Priority-Based Flow Control Using Dynamic Buffer Method............................................................................... 239
Behavior of Tagged Packets........................................................................................................................................ 240
Operations on Untagged Packets...............................................................................................................................240
Configuration Example for DSCP and PFC Priorities.............................................................................................240
SNMP Support for PFC and Buffer Statistics Tracking........................................................................................ 241
Generation of PFC for a Priority for Untagged Packets....................................................................................... 242
Performing PFC Using DSCP Bits Instead of 802.1p Bits.....................................................................................242
PFC and ETS Configuration Examples.......................................................................................................................243
Using PFC to Manage Converged Ethernet Traffic............................................................................................... 243
Configure Enhanced Transmission Selection........................................................................................................... 243
ETS Prerequisites and Restrictions...................................................................................................................... 243
Creating an ETS Priority Group............................................................................................................................. 243
ETS Operation with DCBx.......................................................................................................................................244
Configuring Bandwidth Allocation for DCBx CIN.............................................................................................. 245
Hierarchical Scheduling in ETS Output Policies...................................................................................................... 245
Applying the DCB Policies on Linecard......................................................................................................................246
Applying DCB Policies on SFM Ports.........................................................................................................................246
Using ETS to Manage Converged Ethernet Traffic............................................................................................... 246
Configure a DCBx Operation........................................................................................................................................246
DCBx Operation.........................................................................................................................................................246
DCBx Port Roles........................................................................................................................................................247
DCB Configuration Exchange.................................................................................................................................248
Configuration Source Election............................................................................................................................... 248
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