Users Guide

9 Content Addressable Memory (CAM)..............................................................................................................206
CAM Allocation.......................................................................................................................................................206
Test CAM Usage.....................................................................................................................................................208
View CAM Profiles..................................................................................................................................................208
View CAM-ACL Settings....................................................................................................................................... 209
View CAM Usage.................................................................................................................................................... 210
CAM Optimization.................................................................................................................................................. 211
Troubleshoot CAM Profiling................................................................................................................................. 211
QoS CAM Region Limitation...........................................................................................................................211
Syslog Error When the Table is Full...............................................................................................................211
Syslog Warning Upon 90 Percent Utilization of CAM...............................................................................212
Syslog Warning for Discrepancies Between Configured Extended Prefixes........................................212
Unified Forwarding Table (UFT) Modes............................................................................................................. 212
Configuring UFT Modes.................................................................................................................................. 212
10 Control Plane Policing (CoPP)........................................................................................................................214
Configure Control Plane Policing.......................................................................................................................216
Configuring CoPP for Protocols....................................................................................................................216
Configuring CoPP for CPU Queues............................................................................................................. 218
Displaying CoPP Configuration ....................................................................................................................219
11 Data Center Bridging (DCB).............................................................................................................................221
Ethernet Enhancements in Data Center Bridging........................................................................................... 221
Priority-Based Flow Control.......................................................................................................................... 222
Enhanced Transmission Selection................................................................................................................223
Data Center Bridging Exchange Protocol (DCBx).....................................................................................224
Data Center Bridging in a Traffic Flow.........................................................................................................225
Enabling Data Center Bridging............................................................................................................................225
DCB Maps and its Attributes.......................................................................................................................... 226
Data Center Bridging: Default Configuration...................................................................................................227
Configuring Priority-Based Flow Control......................................................................................................... 227
Configuring Lossless Queues........................................................................................................................ 228
Configuring PFC in a DCB Map...........................................................................................................................230
PFC Configuration Notes............................................................................................................................... 230
PFC Prerequisites and Restrictions............................................................................................................... 231
Applying a DCB Map on a Port............................................................................................................................ 231
Configuring PFC without a DCB Map................................................................................................................ 232
Configuring Lossless QueuesExample:....................................................................................................... 232
Priority-Based Flow Control Using Dynamic Buffer Method....................................................................... 234
Pause and Resume of Traffic......................................................................................................................... 234
Buffer Sizes for Lossless or PFC Packets.....................................................................................................234
Behavior of Tagged Packets................................................................................................................................ 235
Configuration Example for DSCP and PFC Priorities......................................................................................235
SNMP Support for PFC and Buffer Statistics Tracking................................................................................... 236
Performing PFC Using DSCP Bits Instead of 802.1p Bits...............................................................................236
PFC and ETS Configuration Examples............................................................................................................... 237
9.10(0.1)
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