3Com 5102B-EE Pre-Installation Test, Connecting Loopback Connector

Pre-Installation Test

When you install the Bridge Module into the concentrator, the unit performs a self-test to verify proper operation of the internal hardware and communication interfaces. To test the unit independently of network activity, follow these steps prior to plugging the module into the concentrator:

1.Install the provided Ethernet loopback connector to the AUI port on the module as shown in Figure 2-3.

Figure 2-3. Connecting Loopback Connector

2.Remove two adjacent blank concentrator panels to expose two slots for the Bridge Module.

3.Insert the module into the board guides at the top and bottom of the slots and slide it into the concentrator. Make sure the connectors are well seated into the backplane of the concentrator.

2 - 10 ONline Ethernet Bridge Module Installation and Operation Guide