Users Guide
Using PFC and ETS to Manage Converged Ethernet Traffic................................................................... 281
Hierarchical Scheduling in ETS Output Policies.........................................................................................281
Priority-Based Flow Control Using Dynamic Buffer Method....................................................................... 282
Pause and Resume of Traffic......................................................................................................................... 282
Buffer Sizes for Lossless or PFC Packets.....................................................................................................283
Configuring the Dynamic Buffer Method......................................................................................................... 283
12 Debugging and Diagnostics............................................................................................................................285
Offline Diagnostics.................................................................................................................................................285
Running Port Extender Offline Diagnostics on the Switch..................................................................... 285
Running Offline Diagnostics on a Standalone Switch.............................................................................. 291
TRACE Logs..............................................................................................................................................................312
Auto Save on Reload, Crash, or Rollover.....................................................................................................312
Uploading Trace Logs......................................................................................................................................312
Last Restart Reason................................................................................................................................................ 313
show hardware Commands.................................................................................................................................313
Environmental Monitoring....................................................................................................................................315
Displaying Port Extender Environment Information ................................................................................ 315
Display Power Supply Status.......................................................................................................................... 316
Display Fan Status.............................................................................................................................................316
Display Transceiver Type.................................................................................................................................317
Recognize an Over-Temperature Condition..............................................................................................318
Troubleshoot an Over-Temperature Condition........................................................................................ 319
Troubleshooting Packet Loss...............................................................................................................................321
Displaying Drop Counters.............................................................................................................................. 322
Displaying Dataplane Statistics......................................................................................................................322
Displaying Line-Card Counters.....................................................................................................................324
Accessing Application Core Dumps...................................................................................................................325
Mini Core Dumps................................................................................................................................................... 325
Full Kernel Core Dumps........................................................................................................................................326
Enabling TCP Dumps............................................................................................................................................ 326
Accessing Port Extender Core and Mini Core Dumps................................................................................... 327
13 Dynamic Host Configuration Protocol (DHCP)...........................................................................................328
DHCP Packet Format and Options.....................................................................................................................328
Assign an IP Address using DHCP...................................................................................................................... 330
Implementation Information................................................................................................................................331
Configure the System to be a DHCP Server..................................................................................................... 331
Configuring the Server for Automatic Address Allocation...................................................................... 332
Specifying a Default Gateway........................................................................................................................333
Configure a Method of Hostname Resolution...........................................................................................334
Using DNS for Address Resolution............................................................................................................... 334
Using NetBIOS WINS for Address Resolution............................................................................................ 334
Creating Manual Binding Entries...................................................................................................................334
Debugging the DHCP Server......................................................................................................................... 335
Using DHCP Clear Commands..................................................................................................................... 335
Configure the System to be a Relay Agent.......................................................................................................335
Version 9.10(0.1)
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