ZyXEL Communications Dimension GS-3012, Руководство пользователя, Страница: 40 / 259

GS-3012/GS-3012F User’s Guide
3-2 Hardware Connections
Table 3-1 Front Panel Connections
CONNECTOR DESCRIPTION
100/1000 Mbps RJ-45
Ethernet Ports Connect these 1Gbps Electrical Ethernet ports to high-bandwidth backbone network
Ethernet switches or use them to daisy-chain other switches.
Mini GBIC Ports Use mini GBIC transceivers in these slots for fiber-optical connections to backbone
Ethernet switches.
Console Port The console port is for local configuration of the switch.
Management Port Connect to a computer using an RJ-45 Ethernet cable for local configuration of the
switch.
3.2.1 Console Port
For local management, you can use a computer with terminal emulation software configured to the following
parameters:
VT100 terminal emulation 9600 bps
No parity, 8 data bits, 1 stop bit No flow control
Connect the male 9-pin end of the console cable to the console port on the switch. Connect the female end to a
serial port (COM1, COM2 or other COM port) of your computer.
3.2.2 Gigabit Interfaces
The switch has 100/1000Mbps auto-negotiating, auto-crossover Gigabit ports. The speed of the Gigabit ports can
be 100Mbps or 1000Mbps and the duplex mode can be half duplex (for 100 Mbps) or full duplex. The GS-3012’s
mini GBIC slots are paired with Gigabit ports. The GS-3012F’s Gigabit ports are paired with mini GBIC slots.
The switch uses up to one connection for each mini GBIC slot and Gigabit port pair. The mini GBIC ports have
priority over the Gigabit ports. This means that if a mini GBIC port and the corresponding Gigabit port are
connected at the same time, the Gigabit port will be disabled.
When auto-negotiation is turned on, a Gigabit port negotiates with the peer automatically to determine the
connection speed and duplex mode. If the peer Ethernet port does not support auto-negotiation or turns off this
feature, the switch determines the connection speed by detecting the signal on the cable and using half duplex
mode. When the switch’s auto-negotiation is turned off, a Gigabit port uses the pre-configured speed and duplex
mode when making a connection, thus requiring you to make sure that the settings of the peer Ethernet port are the
same in order to connect.
Default Ethernet Negotiation Settings
The factory default negotiation settings for the Gigabit ports are:
Speed: Auto Duplex: Auto
Flow control: On Link Aggregation: Disabled