CABLES

Console Port Pin Assignments

The DB-9 serial port on the switch’s rear panel is used to connect to the switch for out-of-band console configuration. The on-board menu-driven configuration program can be accessed from a terminal, a PC running a terminal emulation program, or from a remote location via a modem connection. The pin assignments used to connect to the serial port are provided in the following tables.

Figure B-1. DB-9 Console Port Pin Numbers

DB-9 Port Pin Assignments

EIA

CCITT

Description

Switch’s

PC DB9

Modem

Signal

Circuit

Signal

 

DB9 DTE

DTE

DB25

Direction

 

 

 

Pin #

Pin #

DCE Pin #

DTE-DCE

 

 

 

 

 

 

 

CF

109

DCD (Data Carrier Detected)

1

1

8

<------

BB

104

RxD (Received Data)

2

2

3

<------

 

 

 

 

 

 

 

BA

103

TxD (Transmitted Data)

3

3

2

------>

CD

108.2

DTR (Data Terminal Ready)

4

4

20

------>

AB

102

SG (Signal Ground)

5

5

7

-------

 

 

 

 

 

 

 

CC

107

DSR (Data Set Ready)

6

6

6

<------

CA

105

RTS (Request-to-Send)

7

7

4

------>

CB

106

CTS (Clear-to-Send)

8

8

5

<------

 

 

 

 

 

 

 

CE

125

RI (Ring Indicator)

9

9

22

<------

B-6

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SMC Networks 100 manual Console Port Pin Assignments, DB-9 Port Pin Assignments