Extreme Networks BlackDiamond 8810 Hardware Installation Manual page 34

Initial Management Access
Figure 8 shows the pinouts for a 9-pin to 25-pin (RS-232) null-modem cable.
Figure 8: Null-modem cable pinouts
Switch
Cable connector: 9-pin female
Screen Shell
TxD 3
RxD 2
Ground 5
RTS 7
CTS 8
DSR 6
DCD 1
DTR 4
Figure 9 shows the pinouts for a 9-pin to 9-pin (PC-AT) null-modem serial cable.
Figure 9: PC-AT serial null-modem cable pinouts
Switch
Cable connector: 9-pin female
Screen Shell
DTR 4
TxD 3
RxD 2
CTS 8
Ground 5
DSR 6
RTS 7
DCD 1
Extreme Networks Consolidated XOS Hardware Installation Guide
PC/Terminal
Cable connector: 25-pin male/female
1 Screen
3 RxD
2 TxD
7 Ground
4 RTS
20 DTR
5 CTS
6 DSR
8 DCD
PC-AT Serial Port
Cable connector: 9-pin female
Shell Screen
1 DCD
2 RxD
3 TxD
4 DTR
5 Ground
6 DSR
7 RTS
8 CTS
25pin
9pin
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