Ethernet Switch Installation Guide

206375-A

B-1

Appendix B

Cables and Connectors

This appendix provides specifications for cables and connectors used for the

BayStack 70 Series 10/100 Ethernet Switch.

10BASE-T/100BASE-TX UTP Cable

For 10BASE-T and 100BASE-TX connections, use Category 5, 8-wire unshielded

twisted pair cable. Configure your network according to the following guidelines:

• Use a maximum segment length of 100 meters.

• Use an 8-pin modular plug (RJ-45).

Table B-1

shows the RJ-45 connector pin assignments for MDI-X and MDI ports.

Table B-1. RJ-45 Connector Pin Assignments

RJ-45

10BASE-T/100BASE-TX

Ethernet Port

10BASE-T MDI-X

(Normal) Port

100 BASE-TX

MDI-X Port

MDI

(Uplink)

Port

1 RX+ (Receive) RX+ TX+

2 RX- (Receive) RX- TX-

3 TX+ (Transmit) TX+ RX+

4 Not used Common-Mode

Terminated (CMT)

5 Not used CMT

6 TX- (Transmit) TX- RX-

7 Not used CMT

8 Not used CMT

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