Enterasys X-Pedition 2000, Руководство по началу работы

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Enterasys Xpedition 2000 Getting Started Guide 35
Installing the Hardware
Figure 18. Plugging an ethernet cable into a 10/100BASE-TX port
To attach segment cables to your 10/100BASE-TX ports:
1. For all the 10/100-Mbps ports, obtain copper cables that have the following pin assignments.
The RJ-45 connectors on the 10/100 ports are configured as Media Data Interface Crossed
(MDIX). You can use Category 3 (Cat-3) or higher wire for 10-Mbps segments. For 100-Mbps
segments, use Cat-5 or higher wire. The ports automatically sense to which type of segment
they are connected and configure themselves to transmit and receive at the appropriate
bandwidth.
2 1
8 7 6 5 4 3 2 1 8 7 6 5 4 3 2 1
1000BASE-SX
8 7 6 5 4 3 2 1
10/100BASE-TX
1
3
2
4
CONSOLE
10/100 MGMT
OK
ERR DIAG
HBT
RST
G2M-HTXA2-08 G2M-GSXA1-02
10/100BASE-TX 10/100BASE-TX
Tx
Rx
Link
AN
Tx
Rx
Link
AN
SYS
Enterasys Networks
Table 18. RJ-45 connector pin assignments
Signal (XP-2000 port) Pin Signal (connected device port)
TXD (transmit data) 1 RXD (receive data)
a
TXD (transmit data) 2 RXD (receive data)
RXD (receive data) 3 TXD (transmit data)
Unused 4 Unused
Unused 5 Unused
RXD (receive data) 6 TXD (transmit data)
Unused 7 Unused
Unused 8 Unused
a. The right hand column pin assignments are for the RJ-45 connector on the XP-2000. Thus, pin 1 (TXD or
“transmit data”) must emerge on the management console’s end of the connection as RXD (“receive data”) and
so on.