FastIron GS Compact Layer 2 Switch Hardware Installation Guide
6 - 6 © 2007 Foundry Networks, Inc. September 2007
Pinouts and Signalling
This section lists the pinouts for the DB-9 connector and RJ-45 port jacks.

Serial (Console) Port Pinouts

The Console port is a standard male DB-9 connector, as shown in Figure 6.2.
Figure 6.2 Serial port pin and signalling details
Most PC serial ports require a cable with a female DB-9 connector. However, terminal connections will vary,
requiring a cable with either a DB-9 or DB-25 connector, male or female.
Serial cable options between the FastIron GS and a PC or terminal are shown in Figure 6.3.
NOTE: As indicated in Figure 6.2 and Figure 6.3, some of the wires should not be connected. If you do connect
the wires that are labeled “Reserved”, you might get unexpected results with some terminals.
Figure 6.3 Console port pin assignments showing cable connection options to a terminal or PC
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Pin Assignment
DB-9 male
Pin Number
1
2
3
4
5
6
7
8
9
Switch Signal
Reserved
TXD (output)
RXD (input)
GND
CTS (input)
RTS (output)
Reserved
Reserved
Reserved
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
Reserved
DB-9 to DB-9
Female Switch
Reserved
Reserved
Reserved
Term i n al or PC
1
2
3
4
5
6
7
8
9
8
3
2
20
7
6
4
5
22
Reserved
DB-9 to DB-25
Female Switch
Reserved
Reserved
Reserved
Term i n al or PC