Introduction......................................................................................................................... 1
General Description ........................................................................................................ 1
About Fast Ethernet ........................................................................................................ 2
About Autonegotiation.................................................................................................... 2
LED Indicators................................................................................................................ 4
Summary of Features ...................................................................................................... 4
Hardware Installation.......................................................................................................... 6
Unpack and Inspect ......................................................................................................... 6
Remove the DFE -680TX.............................................................................................. 10
Software Installation......................................................................................................... 13
Troubleshooting ................................................................................................................ 34
Verify Cable Connections ............................................................................................. 35
Understanding Indicators .............................................................................................. 36
Specifications .................................................................................................................... 38
CONTENTS