Activating the Module

1Ensure that the Switch is powered-up.

2Plug the RJ-45 connector on the Category 5 cable into the RJ-45 port on the Module.

3Connect the other end of the Category 5 cable to a device that supports 1000BASE-T.

4Check the LEDs on the front of the Switch to ensure that the Module is operating correctly. Refer to “LEDs” for more information.

Removing the Module from a Switch

1Ensure that the power supply and the backbone connection cables are disconnected from the Switch.

2Undo the Module’s two captive screws with a suitable screwdriver. Do not remove any other screws from the Switch.

3Remove the Module.

4If you are not fitting another Module immediately, you must replace the blanking plate to ensure that dust and debris do not enter the Switch. Replacing the blanking plate will also help circulate cooling air through the Switch.

MANAGING THE MODULE

When the Module is installed, you can configure it through your Switch to add extra functionality. Refer to the documentation that accompanies your Switch 4300 for more information.

The Switch 4300 dynamically assigns port numbers to each Module installed, so if you add, replace or remove a Module, the port number of the other Module may change. The port numbers allocated depend on the type of Module; the number of Modules installed and the slots into which they are fitted.

Figure 2 shows how a single port Module, inserted into Slot 2, will be assigned a port number of 49. If you then insert an additional dual or a single port Module into Slot 1 (see Figure 3 and Figure 4) the port numbering will change. The port number originally assigned to the Module in Slot 2 (and any port parameters you may have set against that port number) will be re-assigned to the Module installed into Slot 1. Similarly, if you then remove the Module from Slot 1, the port number and parameter settings will be re-assigned to the Module in Slot 2.

CAUTION: Always check that each port number has the correct parameter settings after adding, changing or removing a Module. This is due to the method in which the Switch dynamically assigns port numbers.

Figure 2 Rear View of Switch 4300

Module Port Number Allocation

Figure 3 Rear View of Switch 4300

Installing a Dual Port Module into Slot 1

Figure 4 Rear View of Switch 4300

Installing a Single Port Module into Slot 1

MODULE PORT RESTRICTIONS

When using the Module port, note the following:

The Module only operates in full duplex mode for

T1000BASE-T.

The Module operates in half and full duplex mode for 10BASE-T and 100BASE-TX.

The Module is not hot-swappable

TThe Module is not hot-insertable.

The Module only operates with Category 5 Ethernet cable.

PROBLEM SOLVING

If you suspect a problem, carry out these steps before contacting your supplier:

Ensure that the Module is correctly installed in the

TSwitch.

Ensure that the Switch in which the Module is fitted is powered-up.

Ensure that the device at the far end of the line is

Tpowered-up and operating correctly.

Check that all connectors on the Category 5 cable are correctly engaged.

For information about technical support , refer to the documentation supplied with your Supplier.

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3Com 3C17121 manual Managing the Module, Module Port Restrictions, Problem Solving, Activating the Module