Ethernet Ports; Default Ethernet Settings; Mini-Gbic Slots - ZyXEL Communications Dimension GS-2024 User Manual

GS-2024 User's Guide
• 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 switch. Connect the
female end to a serial port (COM1, COM2 or other COM port) of your computer.

3.1.2 Ethernet Ports

The switch has 24 100/1000Mbps 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.
An auto-negotiating port can detect and adjust to the optimum Ethernet speed (100/
1000Mpbs) and duplex mode (full duplex or half duplex) of the connected device.
An auto-crossover (auto-MDI/MDI-X) port automatically works with a straight-through or
crossover Ethernet cable.
Two Gigabit ports are paired with the two mini GBIC slots. The switch uses up to one
connection for each pair for a total of two possible Gigabit connections (one from each of the
two pairs). 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.

3.1.2.1 Default Ethernet Settings

The factory default negotiation settings for the Ethernet ports on the switch are:
• Speed: Auto
• Duplex: Auto
• Flow control: Off
• Link Aggregation: Disabled

3.1.3 Mini-GBIC Slots

These are slots for mini-GBIC (Gigabit Interface Converter) transceivers. A transceiver is a
single unit that houses a transmitter and a receiver. The switch does not come with
transceivers. You must use transceivers that comply with the SFP (Small Form-factor
Pluggable) Transceiver MultiSource Agreement (MSA). See the SFF committee's INF-8074i
specification Rev 1.0 for details.
There are two pairs of Gigabit Ethernet/mini-GBIC ports. 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.
You can change transceivers while the switch is operating. You can use different transceivers
to connect to Ethernet switches with different types of fiber-optic connectors.
40 Chapter 3 Hardware Overview