C
ABLES

B-6

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. T he on-board menu-driven
configuration program can be accessed from a ter minal, 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-2. DB-9 Console Port Pin Numbers

DB-9 Port Pin Assignments

Console Port to 9-Pin COM Port on PC

EIA
Circuit
CCITT
Signal
Description Switch’s
DB9 DTE
Pin #
PC DB9
DTE
Pin #
Signal
Direction
DCE-DTE
BB 1 04 RxD (Received Data) 2 2 ------>
BA 103 TxD (Transmitted Data) 3 3 <------
AB 102 SGND (Signal Ground) 5 5 --------
No other pins are used.
Switch’s 9-Pin
Serial Port
CCITT Signal PC’s 9-Pin
COM Port
2 RXD <---------RXD ----------- - 3 TxD
3 TXD -----------TXD ---------- > 2 RxD
5 SGND -----------SGND ---------- 5 SGND
No other pins are used.