- ページ 35

スイッチ HP 1405-8のPDF インストールとスタートマニュアルをオンラインで閲覧またはダウンロードできます。HP 1405-8 45 ページ。 1405 switch series
HP 1405-8 にも：クイック・スタート・マニュアル (16 ページ), インストールとスタートマニュアル (44 ページ)

Specifications

Twisted-Pair Cable/Connector Pin-Outs

N o t e

A-4

Twisted-Pair Cable/Connector Pin-Outs

The Auto-MDIX Feature: In the default configuration, "Auto", the fixed 10/

100/1000Base-T ports on the switches all automatically detect the type of port

on the connected device and operate as either an MDI or MDI-X port,

whichever is appropriate. So for any connection, a straight-through twisted-

pair cable can be used—you no longer have to use crossover cables, although

crossover cables can also be used for any of the connections. (The 10/100/

1000-T ports support the IEEE 802.3ab standard, which includes the "Auto-

MDIX" feature.)

If you connect a switch twisted-pair port to another switch or hub, which

typically have MDI-X ports, the switch port automatically operates as an MDI

port. If you connect it to an end node, such as a server or PC, which typically

have MDI ports, the switch port operates as an MDI-X port. In all cases, you

can use standard straight-through cables or crossover cables.

If you happen to use a correctly wired crossover cable, though, the switch will

still be able to automatically detect the MDI/MDI-X operation and link

correctly to the connected device.

Using Fixed Configurations. If the port configuration is changed to any of

the fixed configurations though, for example 100 Mbps/full duplex, the port

operates as MDI-X only and the correct cable type must be used: for

connections to MDI ports, such as end nodes, use a straight-through cable; for

connections to MDI-X ports, such as on hubs and other switches, use a

crossover cable.

Other Wiring Rules:

■

All twisted-pair wires used for 10 Mbps, and 100 Mbps operation must be

twisted through the entire length of the cable. The wiring sequence must

conform to EIA/TIA 568-B (not USOC). See "Twisted-Pair Cable Pin

Assignments" later in this appendix for a listing of the signals used on each

pin.

For 1000Base-T connections, all four pairs of wires in the cable must be

■

available for data transmission.

■

For 10 Mbps connections to the ports, you can use Category 3, 4, or 5

unshielded twisted-pair cable, as supported by the IEEE 802.3 Type

10Base-T standard.