KBC Networks ESML3-FL2-D4 - Manual (Page 12)

Ethernet Switch User Manual
Manual_hw-ESML3-FL2-D4-Rev1011
Copyright © KBC Networks Ltd.
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2.12 RS232 Console Interface
The console interface on the ESML3-FL2-D4 is a shielded RJ45 connector based on
3-line RS232. The switch can be connected to a 9 pin serial port of a pc using a
cable with a DM9F connector. For further information on accessing the management
software please see separate software management manual for this switch.
3 Troubleshooting
3.1 Self-testing
When the device is powered on the Power LED will be permanently illuminated
showing that there is power to the unit and the RUN1 LED and the ALARM LED will
flash.
3.2 Twisted Pair Port Testing
As shown in Figure 3.1, with the switch powered on, connect two RJ45 ports from
the switch to two test computers and send the “ping” command between each
computer. If both the computers receive the complete command without packet loss
and the green LED flashes, this means that the two RJ45 ports are working correctly.
Test the other RJ45 ports as required, using the same method. During normal
operation the green LINK/ACT LED will flash to show data transfer and the yellow
10M/100M will either be off to show 10Mbps (10BASE-T) operation or on to show
100Mbps (100BASE-TX) operation.
Figure: 3.1 Testing TP Ports