Users Guide

Conguring Enhanced Transmission Selection...........................................................................................................275
Creating an ETS Priority Group..............................................................................................................................276
ETS Operation with DCBx.......................................................................................................................................277
Congure a DCBx Operation........................................................................................................................................ 277
DCBx Operation........................................................................................................................................................277
DCBx Port Roles...................................................................................................................................................... 278
DCB Conguration Exchange.................................................................................................................................279
Conguration Source Election................................................................................................................................279
Propagation of DCB Information........................................................................................................................... 280
Auto-Detection and Manual Conguration of the DCBx Version...................................................................... 280
Behavior of Tagged Packets....................................................................................................................................281
Conguration Example for DSCP and PFC Priorities...........................................................................................281
DCBx Example..........................................................................................................................................................282
DCBx Prerequisites and Restrictions.....................................................................................................................283
Conguring DCBx....................................................................................................................................................283
Verifying the DCB Conguration................................................................................................................................. 286
Performing PFC Using DSCP Bits Instead of 802.1p Bits.........................................................................................296
PFC and ETS Conguration Examples........................................................................................................................296
Using PFC and ETS to Manage Data Center Trac................................................................................................. 297
PFC and ETS Conguration Command Examples...............................................................................................298
Using PFC and ETS to Manage Converged Ethernet Trac.............................................................................298
Hierarchical Scheduling in ETS Output Policies................................................................................................... 299
Priority-Based Flow Control Using Dynamic Buer Method................................................................................... 299
Pause and Resume of Trac..................................................................................................................................299
Buer Sizes for Lossless or PFC Packets............................................................................................................ 300
Conguring the Dynamic Buer Method................................................................................................................... 300
12 Debugging and Diagnostics...................................................................................................................... 302
Oine Diagnostics.........................................................................................................................................................302
Running Port Extender Oine Diagnostics on the Switch.................................................................................302
Running Oine Diagnostics on a Standalone Switch......................................................................................... 309
TRACE Logs................................................................................................................................................................... 329
Auto Save on Reload, Crash, or Rollover..............................................................................................................330
Uploading Trace Logs.............................................................................................................................................. 330
Last Restart Reason......................................................................................................................................................330
show hardware Commands...........................................................................................................................................331
Environmental Monitoring.............................................................................................................................................333
Displaying Port Extender Environment Information ........................................................................................... 333
Display Power Supply Status..................................................................................................................................333
Display Fan Status................................................................................................................................................... 334
Display Transceiver Type......................................................................................................................................... 334
Recognize an Over-Temperature Condition..........................................................................................................336
Troubleshoot an Over-Temperature Condition......................................................................................................337
Troubleshooting Packet Loss........................................................................................................................................339
Displaying Drop Counters........................................................................................................................................339
Displaying Dataplane Statistics.............................................................................................................................. 340
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