Reference Guide

Configuring PFC and ETS in a DCB Map.................................................................................................................. 209
Configuring Priority-Based Flow Control................................................................................................................... 212
Configuring Lossless Queues.................................................................................................................................. 212
Configure Enhanced Transmission Selection............................................................................................................ 213
ETS Prerequisites and Restrictions....................................................................................................................... 213
Creating an ETS Priority Group..............................................................................................................................213
ETS Operation with DCBx....................................................................................................................................... 214
Configuring Bandwidth Allocation for DCBx CIN............................................................................................... 215
Applying the DCB Policies on Linecard.......................................................................................................................215
Applying DCB Policies on SFM Ports..........................................................................................................................216
Configure a DCBx Operation........................................................................................................................................ 216
DCBx Operation......................................................................................................................................................... 216
DCBx Port Roles........................................................................................................................................................ 216
DCB Configuration Exchange................................................................................................................................. 218
Configuration Source Election................................................................................................................................ 218
Propagation of DCB Information............................................................................................................................218
Auto-Detection and Manual Configuration of the DCBx Version.................................................................. 219
Behavior of Tagged Packets................................................................................................................................... 219
Configuration Example for DSCP and PFC Priorities........................................................................................219
DCBx Example............................................................................................................................................................220
DCBx Prerequisites and Restrictions.................................................................................................................... 221
Configuring DCBx...................................................................................................................................................... 221
Verifying the DCB Configuration.................................................................................................................................224
Generation of PFC for a Priority for Untagged Packets....................................................................................... 234
Operations on Untagged Packets............................................................................................................................... 234
Performing PFC Using DSCP Bits Instead of 802.1p Bits.....................................................................................234
PFC and ETS Configuration Examples.......................................................................................................................235
Using PFC and ETS to Manage Data Center Traffic............................................................................................. 235
Using PFC and ETS to Manage Converged Ethernet Traffic.........................................................................237
Hierarchical Scheduling in ETS Output Policies.................................................................................................237
Priority-Based Flow Control Using Dynamic Buffer Method................................................................................238
Configuring the Dynamic Buffer Method..................................................................................................................239
Sample Configurations...................................................................................................................................................240
Chapter 13: Debugging and Diagnostics..................................................................................... 244
Offline Diagnostics..........................................................................................................................................................244
Running Offline Diagnostics....................................................................................................................................244
Examples of Running Offline Diagnostics............................................................................................................245
TRACE Logs..................................................................................................................................................................... 252
Auto Save on Reload, Crash, or Rollover............................................................................................................ 252
Last Restart Reason.......................................................................................................................................................253
show hardware Commands.......................................................................................................................................... 253
Environmental Monitoring.............................................................................................................................................254
Display Power Supply Status..................................................................................................................................254
Display Fan Status.................................................................................................................................................... 255
Display Transceiver Type........................................................................................................................................ 256
Recognize an Over-Temperature Condition.......................................................................................................257
Troubleshoot an Over-Temperature Condition..................................................................................................258
Troubleshooting Packet Loss.......................................................................................................................................259
Displaying Drop Counters........................................................................................................................................260
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