Operational Diagnostics - Cabletron Systems 3E02-04 User Manual

Table 5-4 Meaning of 3E02-04 LED Indicators
LED Meaning
Receiver and transmitter active at the same time on 10BASE-T
COL
port and when port enters jabber state (LED flashes)
10BASE-T port is connected to another device by a cable; both
LNK
cable and port are working correctly (LED is turned on)
RX 10BASE-T port is receiving data (LED flashes)
TX 10BASE-T port is transmitting data (LED flashes)
PROC Processor is ready for operation
POWER Module hardware is receiving power
Table 5-5 Meaning of 3E02-08-ATX LED Indicators
LED Meaning
Receiver and transmitter active at the same time on 10BASE-T
COL
port
ACT 10BASE-T port is receiving and transmitting data
10BASE-T port is connected to another device by a cable; both
LINK
cable and port are working correctly (LED is turned on)
PROC Processor is ready for operation
POWER Module hardware is receiving power

5.2 OPERATIONAL DIAGNOSTICS

Built-in local and remote loopback tests can be used 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.
Ethernet Switch Module User Guide
Operational Diagnostics
Page 5-3