White Papers

Creating an ETS Priority Group..............................................................................................................................275
ETS Operation with DCBx...................................................................................................................................... 276
Congure a DCBx Operation........................................................................................................................................ 276
DCBx Operation....................................................................................................................................................... 276
DCBx Port Roles.......................................................................................................................................................277
DCB Conguration Exchange.................................................................................................................................278
Conguration Source Election................................................................................................................................278
Propagation of DCB Information............................................................................................................................279
Auto-Detection and Manual Conguration of the DCBx Version.......................................................................279
Behavior of Tagged Packets...................................................................................................................................280
Conguration Example for DSCP and PFC Priorities..........................................................................................280
DCBx Example.......................................................................................................................................................... 281
DCBx Prerequisites and Restrictions.....................................................................................................................282
Conguring DCBx.................................................................................................................................................... 282
Verifying the DCB Conguration................................................................................................................................. 285
Performing PFC Using DSCP Bits Instead of 802.1p Bits.........................................................................................295
PFC and ETS Conguration Examples....................................................................................................................... 295
Using PFC and ETS to Manage Data Center Trac................................................................................................. 296
PFC and ETS Conguration Command Examples...............................................................................................297
Using PFC and ETS to Manage Converged Ethernet Trac.............................................................................297
Hierarchical Scheduling in ETS Output Policies................................................................................................... 298
Priority-Based Flow Control Using Dynamic Buer Method....................................................................................298
Pause and Resume of Trac..................................................................................................................................298
Buer Sizes for Lossless or PFC Packets............................................................................................................ 299
Conguring the Dynamic Buer Method................................................................................................................... 299
12 Debugging and Diagnostics....................................................................................................................... 301
Oine Diagnostics..........................................................................................................................................................301
Running Port Extender Oine Diagnostics on the Switch................................................................................. 301
Running Oine Diagnostics on a Standalone Switch......................................................................................... 308
TRACE Logs................................................................................................................................................................... 328
Auto Save on Reload, Crash, or Rollover..............................................................................................................329
Uploading Trace Logs.............................................................................................................................................. 329
Last Restart Reason......................................................................................................................................................329
show hardware Commands..........................................................................................................................................330
Environmental Monitoring.............................................................................................................................................332
Displaying Port Extender Environment Information ........................................................................................... 332
Display Power Supply Status..................................................................................................................................332
Display Fan Status................................................................................................................................................... 333
Display Transceiver Type......................................................................................................................................... 333
Recognize an Over-Temperature Condition..........................................................................................................335
Troubleshoot an Over-Temperature Condition..................................................................................................... 336
Troubleshooting Packet Loss........................................................................................................................................338
Displaying Drop Counters........................................................................................................................................338
Displaying Dataplane Statistics.............................................................................................................................. 339
Displaying Line-Card Counters................................................................................................................................341
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