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198 Appendix D Connectors and pin assignments
209418-A
Figure 86 MDI-X to MDI-X cable connections
DB-9 (RS-232-D) Console/Comm Port connector
The DB-9 Console/Comm Port connector (Figure 87) is configured as a data
communications equipment (DCE) connector. The DSR and CTS signal outputs
are always asserted; the CD, DTR, RTS, and RI signal inputs are not used. This
configuration enables a management station (a PC or console terminal) to connect
directly to the switch using a straight-through cable.
Figure 87 DB-9 Console port connector
1818
81 81
RX+
RX-
TX+
TX-
RX+
RX-
TX+
TX-
MDI-X port
BayStack 420 Switch Switch or hub
Crossover cable MDI-X port
T
R
T
R
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
BS45057B
5
6
9
1
619EA