Cabletron Systems 100BASE-FX, Cabling Manual, Page: 152 / 192

Connecting and Terminating
14-2 Ethernet
1. Align the DB15 connector of the AUI cable with the AUI port of the network
device as shown in Figure 14-1. The port will only connect if it is properly
aligned.
Figure 14-1. DB15 Connector Insertion
2. Firmly press the AUI connector over the AUI port. The locking clips on the
sides of the AUI connector should snap into place when the connection is
made.
3. If a sliding latch is present on the connector or port, slide it into place to
secure the connector to the port.
If a link indicator is present for the port, check to see if it is on. If it is not on,
perform the following actions until you achieve a valid link.
• Check that the Ethernet transceiver device at the other end of the AUI segment
is operating.
• Check the DB15 connector for bent or missing pins. Keep in mind that several
DB15 connectors do not provide pins for the inactive wires in the AUI cable.
• Verify that the DB15 connectors on the AUI segment have the proper pinouts.
• Attempt the connection with a known good patch cable.
• Check that the AUI connection meets all cable specifications outlined in
Ethernet Network Requirements.
• If all else fails, contact Cabletron Systems Technical Support.
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