Connecting to the Console Port for Local Management
Enterasys A4 Fast Ethernet Switch Hardware Installation Guide 2-21
Using a DTE modem DB9 female-to-DB25 female cable, you can connect products equipped with
a DB9 DTE male console port to a VT series terminal or VT type terminals running emulation
programs for the VT series.
Using a DTE modem DB9 female-to-DB25 male cable, you can connect products equipped with a
DB9 DTE male console port to a Hayes compatible modem that supports 9600 baud.
The cable used must connect the Console port Received Data, Pin 2 to the Transmitted Data pin at
the other end of the cable. The connection from the Console port Transmitted Data, Pin 3 (must be
connected) to the Received Data pin cable connection at the other end of the cable. The DB9
Console port pin assignments are shown in Figure 2-15.
Figure 2-15 DB9 Male Console Port Pinout Assignments
Connecting to a PC
To connect a PC, running the VT terminal emulation, to the A4 Console port:
1. Connect the DB9 female connector at one end of the cable (supplied with switch) to the
Console port on the A4 switch. (If there is a switch designated as the manager, connect to its
Console port.)
2. Plug the DB9 female connector at the other end of cable into the communications port on the
PC.
3. Turn on the PC and configure your VT emulation package with the following parameters:
When these parameters are set, the Startup screen will display. Proceed to “Connecting to the
Network” on page 2-22.
Connecting to a VT Series Terminal
To connect a VT Series terminal to an A4 Console port, use a UTP serial interface cable terminated
with a DB9 female connector and a DB25 female connector and proceed as follows:
1. Connect the DB9 female connector at one end of cable to the Console port DB9 male connector
on the A4 switch. (If there is a switch designated as the manager, connect to its Console port.)
1 Pin 2, Received Data (input)
2 Pin 3, Transmitted Data (output)
3 Pin 5, Signal Ground
4 Pin 7, Request to Send
5 Pin 8, Clear to Send
All other pins not connected.
Parameter Setting
Mode 7 Bit Control
Transmit Transmit=9600
Bits Parity 8 Bits, No Parity
Stop Bit 1 Stop Bit
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