Users Guide

Offline Diagnostics............................................................................................................................319
Running Port Extender Offline Diagnostics on the Switch........................................................319
Running Offline Diagnostics on a Standalone Switch...............................................................326
TRACE Logs.......................................................................................................................................349
Auto Save on Reload, Crash, or Rollover...................................................................................349
Uploading Trace Logs.................................................................................................................349
Last Restart Reason...........................................................................................................................350
show hardware Commands.............................................................................................................350
Environmental Monitoring................................................................................................................353
Displaying Port Extender Environment Information .................................................................354
Display Power Supply Status...................................................................................................... 354
Display Fan Status....................................................................................................................... 355
Display Transceiver Type............................................................................................................ 355
Recognize an Over-Temperature Condition.............................................................................357
Troubleshoot an Over-Temperature Condition........................................................................358
Troubleshooting Packet Loss...........................................................................................................360
Displaying Drop Counters...........................................................................................................361
Displaying Dataplane Statistics...................................................................................................362
Displaying Line-Card Counters..................................................................................................364
Accessing Application Core Dumps................................................................................................ 364
Mini Core Dumps..............................................................................................................................365
Full Kernel Core Dumps................................................................................................................... 366
Enabling TCP Dumps........................................................................................................................367
Accessing Port Extender Core and Mini Core Dumps.................................................................... 367
13 Dynamic Host Configuration Protocol (DHCP)........................................368
DHCP Packet Format and Options.................................................................................................. 368
Assign an IP Address using DHCP.................................................................................................... 370
Implementation Information.............................................................................................................371
Configure the System to be a DHCP Server.................................................................................... 372
Configuring the Server for Automatic Address Allocation........................................................ 372
Specifying a Default Gateway.....................................................................................................374
Configure a Method of Hostname Resolution...........................................................................374
Using DNS for Address Resolution............................................................................................. 374
Using NetBIOS WINS for Address Resolution............................................................................ 374
Creating Manual Binding Entries................................................................................................ 374
Debugging the DHCP Server...................................................................................................... 375
Using DHCP Clear Commands...................................................................................................375
Configure the System to be a Relay Agent...................................................................................... 375
Configure the System to be a DHCP Client.....................................................................................377
DHCP Client on a Management Interface..................................................................................377
DHCP Client Operation with Other Features.............................................................................378
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