Cabletron Systems 3H02-04 - Manual (Page 28)

Chapter 5: Diagnostics and Troubleshooting
Page 5-2 FE Switch Module User Guide
5.3 OPERATIONAL DIAGNOSTICS
You can use local and remote loopback tests to test individual ports while
the ATX is operational. When in local loopback, a port is disconnected
from its network. The ATX generates loopback packets for the port, and
the port loops the packets back without sending them onto its network.
During a remote loopback test, the port is in normal operation, sending
and receiving packets to its network. The ATX generates loopback
packets which are sent out of the port to a particular destination device on
the ports network. The destination device echoes the packet back onto the
network, and the originating port receives the packet.
Table 5-1 Meaning of 3H02-04 LED Indicators
LED Meaning
LK
100BASE-TX port is connected to another device by a cable;
both the cable and port are working correctly
RX 100BASE-TX port is receiving data (LED flashes)
TX 100BASE-TX port is transmitting data (LED flashes)
PROC Switch module processor is ready for operation
PWR Switch module hardware is receiving power
Table 5-2 Meaning of 3H08-04 LED Indicators
LED Meaning
LK
100BASE-FX port is connected to another device by a cable;
both the cable and port are working correctly
RX 100BASE-FX port is receiving data (LED flashes)
TX 100BASE-FX port is transmitting data (LED flashes)
PROC Switch module is ready for operation
PWR Switch module hardware is receiving power