Cabletron Systems 2E43-51 User Manual page 45

No link exists if the associated port (5 or 6) RX LED is off.
NOTE
Table 4-3 10/100 LED Indications When RX LED Is Off
LED
10/100
2E43-51/2E43-51R User's Guide
Color
Off
Green
Indication
No Link or no cable attached. FE-100TX
forced to 10 Mbps operation, or is
manually set to "auto-negotiate" mode.
No Link or no cable attached. FE-100TX is
forced to 100 Mbps operation.
FE-100TX LED
4-5