Connecting to COM Port for Local Management

1.Verify that a link exists by checking that the port RX LED is ON (flashing amber, blinking green, or solid green). If the RX LED is OFF and the TX LED is not blinking amber, perform the following steps until it is on:

a.To view the receive and transmit activity on a group of segments, press the GROUP SELECT switch (see Figure 3‐11) to step to the appropriate group. Each time the GROUP SELECT switch is pressed, the GROUP LED lights up in sequence, indicating which Group is selected. On the 4H4284‐49, you can step to 1, 2, 3, or 4 for Groups 1 through 4. The receive and transmit activity for that group of segments is then indicated by the RX and TX LEDs for each segment.

b.If there are separate fiber‐optic connections on the other device, check the crossover of the cables. Swap the cable connections if necessary.

c.Verify that the fiber connection meets the dB loss and cable specifications for multimode cabling, as outlined in the Cabling Guide.

If a link is not established, see Chapter 4 for troubleshooting information before contacting Enterasys Networks. To contact Enterasys Networks, refer to “Getting Help” on page xviii for details.

Connecting to COM Port for Local Management

This section describes how to install a UTP straight‐through cable with RJ45 connectors and optional adapters to connect a PC, a VT series terminal, or a modem to an Enterasys Networks module to access Local Management. This section also provides the pinout assignments of the adapters.

Note: The RJ45 COM port connector is located in approximately the same location on all DFE-Gold modules. In the following procedures, the 4H4282-49 COM port is shown as an example in the figures associated with each procedure.

What Is Needed

The following is a list of the user‐supplied parts that may be needed depending on the connection:

RJ45‐to‐DB9 female adapter

UTP straight‐through cable with RJ45 connectors

RJ45‐to‐DB25 female adapter

RJ45‐to‐DB25 male adapter

With a UTP straight‐through cable with RJ45 connectors and RJ45‐to‐DB9 adapter, you can connect products equipped with an RJ45 COM port to an IBM or compatible PC running a VT series emulation software package.

3-20 Installation

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Enterasys Networks 4H4284-49, 4H4202-72, 4H4283-49, 4H4282-49 Connecting to COM Port for Local Management, What Is Needed

4H4203-72, 4H4283-49, 4H4282-49, 4H4202-72, 4H4284-49 specifications

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