User's Manual

Table Of Contents
SPEEDLAN 8500 Series Installation and Operation User Guide
Appendix B Startup LED Patterns Appendix B-3
Interface Startup
After initial startup is complete and LEDs are de-powered, the IDU kernel will then attempt to auto configure each interface
starting with the first one. As each interface is started and tested, the 3 LEDs (Receive, Transmit, and Error) associated with
that particular interface will power-up. If the interface successfully completes testing, the LEDs will shut off and the next
interface will be probed. If there is a hardware problem with an interface, the IDU will either halt with the LEDs left on to
indicate the offending interface or if it has one good interface it will attempt to startup and forward packets.
Interface 1 Testing/Failed*
* This is also the display you see when there are no ports present. This is because the IDU cannot distinguish between a
bad Interface 1 and does not have any interfaces installed.
Interface 2 Testing/Failed
Interface (Port) Number1234
Receive ON
Transmit ON
Error/Collision ON
Interface (Port) Number1234
Receive ON
Transmit ON
Error/Collision ON