System information

B-1
Appendix B: Pin Assignments
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. The pin assignments
used to connect to the serial port are provided in the following tables.
DB-9 Port Pin Assignments
Console Port to 9-Pin DTE Port on PC
Console Port to 25-Pin DTE Port on PC
EIA
Circuit
CCITT
Signal
Description Switch’s
DB9 DTE
Pin #
PC DB9
DTE
Pin #
PC DB25
DTE
Pin #
BB 104 RxD (Received Data) 2 2 3
BA 103 TxD (Transmitted Data) 3 3 2
AB 102 SG (Signal Ground) 5 5 7
No other pins are used.
Switch’s 9-Pin
Serial Port
Null Modem PC’s 9-Pin
DTE Port
2 RXD <--------- TXD ------------ 3 TXD
3 TXD ----------- RXD ----------> 2 RXD
5 SGND ----------- SGND ---------- 5 SGND
No other pins are used.
Switch’s 9-Pin
Serial Port
Null Modem PC’s 25-Pin
DTE Port
2 RXD <--------- TXD ------------ 2 TXD
3 TXD ----------- RXD ----------> 3 RXD
5 SGND ----------- SGND ---------- 7 SGND
No other pins are used.