Chapter 3 Hardware Overview

The following table describes the port labels on the front panel.

Table 1 Front Panel Connections

LABEL

DESCRIPTION

8 100/1000

Connect these 1Gbps Electrical Ethernet ports to high-bandwidth backbone network

Mbps RJ-45

Ethernet switches or use them to daisy-chain other switches.

Ethernet Ports

 

(GS-3012)

 

 

 

8 Mini-GBIC

Use mini-GBIC transceivers in these slots for fiber-optic connections to backbone

Slots (GS-

Ethernet switches.

3012F)

 

 

 

Four Dual

Each interface has one 1000 Base-T copper RJ-45 port and one Small Form-Factor

Personality

Pluggable (SFP) fiber port, with one port active at a time.

Interfaces

 

• 4 100/1000 Mbps RJ-45 Gigabit Ports:

 

 

Connect these Gigabit Ethernet ports to high-bandwidth backbone network

 

Ethernet switches.

 

 

 

• 4 Mini-GBIC Slots:

 

Use mini-GBIC transceivers in these slots for fiber-optic connections to backbone

 

Ethernet switches.

 

 

Console Port

The console port is for local configuration of the switch.

 

 

Management

Connect to a computer using an RJ-45 Ethernet cable for local configuration of the

Port

switch.

 

 

3.1.1 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 of the GS-3012F switch. Connect the female end to a serial port (COM1, COM2 or other COM port) of your computer.

3.1.2 Gigabit Ports

The GS-3012 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 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 (at 100 Mbps) or full duplex. The GS-3012F’s Gigabit ports are paired with mini-GBIC slots.

The switch uses up to one connection for each mini-GBIC and Gigabit 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.

44

 

GS-3012/GS-3012F User’s Guide