Setup Guide

ETS Prerequisites and Restrictions........................................................................................................................277
Priority-Group Conguration Notes.......................................................................................................................278
Conguring Priority-Based Flow Control.................................................................................................................... 278
Conguring Lossless Queues..................................................................................................................................279
Conguring Enhanced Transmission Selection...........................................................................................................279
Creating an ETS Priority Group............................................................................................................................. 280
ETS Operation with DCBx.......................................................................................................................................281
Congure a DCBx Operation.........................................................................................................................................281
DCBx Operation........................................................................................................................................................281
DCBx Port Roles...................................................................................................................................................... 282
DCB Conguration Exchange.................................................................................................................................283
Conguration Source Election................................................................................................................................283
Propagation of DCB Information............................................................................................................................284
Auto-Detection and Manual Conguration of the DCBx Version...................................................................... 284
Behavior of Tagged Packets...................................................................................................................................285
Conguration Example for DSCP and PFC Priorities..........................................................................................285
DCBx Example......................................................................................................................................................... 286
DCBx Prerequisites and Restrictions.....................................................................................................................287
Conguring DCBx.................................................................................................................................................... 287
Verifying the DCB Conguration................................................................................................................................. 290
Performing PFC Using DSCP Bits Instead of 802.1p Bits.........................................................................................300
PFC and ETS Conguration Examples....................................................................................................................... 300
Using PFC and ETS to Manage Data Center Trac..................................................................................................301
PFC and ETS Conguration Command Examples...............................................................................................302
Using PFC and ETS to Manage Converged Ethernet Trac.............................................................................302
Hierarchical Scheduling in ETS Output Policies................................................................................................... 303
Priority-Based Flow Control Using Dynamic Buer Method....................................................................................303
Pause and Resume of Trac..................................................................................................................................303
Buer Sizes for Lossless or PFC Packets............................................................................................................ 304
Conguring the Dynamic Buer Method................................................................................................................... 304
12 Debugging and Diagnostics...................................................................................................................... 306
Oine Diagnostics.........................................................................................................................................................306
Running Port Extender Oine Diagnostics on the Switch.................................................................................306
Running Oine Diagnostics on a Standalone Switch.......................................................................................... 313
TRACE Logs................................................................................................................................................................... 333
Auto Save on Reload, Crash, or Rollover.............................................................................................................. 334
Uploading Trace Logs.............................................................................................................................................. 334
Last Restart Reason......................................................................................................................................................334
show hardware Commands..........................................................................................................................................335
Environmental Monitoring.............................................................................................................................................337
Displaying Port Extender Environment Information ............................................................................................337
Display Power Supply Status.................................................................................................................................. 337
Display Fan Status................................................................................................................................................... 338
Display Transceiver Type......................................................................................................................................... 338
Recognize an Over-Temperature Condition..........................................................................................................340
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