Administrator Guide

Table Of Contents
Troubleshoot CAM Profiling.............................................................................................................................................232
QoS CAM Region Limitation...................................................................................................................................... 232
Syslog Error When the Table is Full.......................................................................................................................... 232
Syslog Warning Upon 90 Percent Utilization of CAM............................................................................................232
Syslog Warning for Discrepancies Between Configured Extended Prefixes.......................................................232
Unified Forwarding Table (UFT) Modes.........................................................................................................................232
Configuring UFT Modes............................................................................................................................................. 233
IPv6 CAM ACL Region..................................................................................................................................................... 233
Important Points to Remember.................................................................................................................................233
Convert the IPv6 ACL CAM to Double-Wide.......................................................................................................... 234
Sharing CAM space between IPv4 QoS and IPv6 ACLs........................................................................................234
11 Control Plane Policing (CoPP).................................................................................................. 235
Configure Control Plane Policing.....................................................................................................................................236
Configuring CoPP for Protocols................................................................................................................................ 237
Configuring CoPP for CPU Queues..........................................................................................................................238
Protocol to CPU Queue Mapping............................................................................................................................. 239
Configuring Protocol to CPU Queue Mapping........................................................................................................ 240
Displaying CoPP Configuration .................................................................................................................................240
12 Data Center Bridging (DCB)..................................................................................................... 243
Ethernet Enhancements in Data Center Bridging.........................................................................................................243
Priority-Based Flow Control.......................................................................................................................................244
Enhanced Transmission Selection.............................................................................................................................245
Data Center Bridging Exchange Protocol (DCBx)..................................................................................................246
Data Center Bridging in a Traffic Flow..................................................................................................................... 246
Enabling Data Center Bridging........................................................................................................................................ 246
DCB Maps and its Attributes..................................................................................................................................... 247
Data Center Bridging: Default Configuration.................................................................................................................247
Configuring Priority-Based Flow Control....................................................................................................................... 248
Configuring Lossless Queues.....................................................................................................................................248
Configuring PFC in a DCB Map.......................................................................................................................................250
Applying a DCB Map on a Port........................................................................................................................................ 251
Configuring PFC without a DCB Map............................................................................................................................. 251
Configuring PFC Asymmetric...........................................................................................................................................251
Priority-Based Flow Control Using Dynamic Buffer Method.......................................................................................252
Shared headroom for lossless or PFC packets............................................................................................................. 253
Configuring Shared Head Room Buffer....................................................................................................................254
Viewing Shared Head Room Usage.......................................................................................................................... 254
Monitoring Buffer Statistics for Tracking Purposes...............................................................................................255
Behavior of Tagged Packets........................................................................................................................................... 255
SNMP Support for PFC and Buffer Statistics Tracking.............................................................................................. 255
Performing PFC Using DSCP Bits Instead of 802.1p Bits........................................................................................... 256
Configuration Example for DSCP and PFC Priorities................................................................................................... 257
Using PFC to Manage Converged Ethernet Traffic..................................................................................................... 257
Generation of PFC for a Priority for Untagged Packets..............................................................................................257
Configure Enhanced Transmission Selection.................................................................................................................257
Creating an ETS Priority Group.................................................................................................................................258
ETS Operation with DCBx..........................................................................................................................................259
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