Switch User Manual

69Publication 1783-UM002C-EN-P - April 2009 69
Chapter 3
Troubleshoot the Switch
This chapter provides these topics for troubleshooting the switch.
Obtain Troubleshooting
Information
The status indicators on the front panel provide troubleshooting information
about the switch. They show power-on self-test (POST) failures,
port-connectivity problems, and overall switch performance. You can also get
statistics from the browser interface, the command-line interface (CLI), or a
Simple Network Management Protocol (SNMP) workstation.
Verify Switch POST Results
As power is applied to the switch, it begins the POST, a series of tests that runs
automatically to ensure that the switch functions properly. It might take several
minutes for the switch to complete POST.
POST starts with status indicator tests that cycle once through the EIP Mod, EIP
Net, Setup, Pwr A, and Pwr B status indicators. While POST proceeds, the EIP
Mod status indicator blinks green, and all the other status indicators remain off.
If POST completes successfully, the System status indicator changes to solid
green, and the other status indicators display their normal operating status. If the
switch fails POST, the System status indicator turns red.
Topic Page
Obtain Troubleshooting Information 69
Verify Switch POST Results 69
Verify Switch Status Indicators 70
Verify Switch Connections 70
Verify Switch Performance 73
Obtain Configuration Information 74
ATTENTION
POST failures are usually fatal. Contact your Rockwell
Automation technical support representative if your switch
does not pass POST.