Zyxel MGS3520-28F [28/338] Ethernet ports

Zyxel MGS3520-28 [28/338] Ethernet ports
Chapter 3 Hardware Overview
MES3500/MGS3520 Series User’s Guide
28
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 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 10/100 Mbps or 24 or 44 10/100/1000 Mbps auto-negotiating, auto-crossover
Ethernet ports. In 10/100 Mbps Fast Ethernet, the speed can be 10 Mbps or 100 Mbps and the
duplex mode can be half duplex or full duplex. In 10/100/1000 Mbps Gigabit Ethernet, the speed
can be 10 Mbps, 100 Mbps or 1000 Mbps and the duplex mode can be half duplex or full duplex.
An auto-negotiating port can detect and adjust to the optimum Ethernet speed (10/100 Mbps or
10/100/1000 Mbps) 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.
The Switch has two or four 1000Base-T Ethernet ports, which are paired with a mini-GBIC slot to
create a dual personality interface. The Switch uses up to one connection for each mini-GBIC and
1000Base-T Ethernet pair. The mini-GBIC slots have priority over the Gigabit ports. This means that
if a mini-GBIC slot and the corresponding GbE port are connected at the same time, the GbE port
will be disabled.
When auto-negotiation is turned on, an Ethernet 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,
an Ethernet 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.
3.1.2.1 Default Ethernet Negotiation Settings
The factory default negotiation settings for the Gigabit ports on the Switch are:
Speed: Auto
•Duplex: Auto
Flow control: Off
Link Aggregation: Disabled
3.1.2.2 Auto-crossover
All ports are auto-crossover, that is auto-MDIX ports (Media Dependent Interface Crossover), so
you may use either a straight-through Ethernet cable or crossover Ethernet cable for all Gigabit port
connections. Auto-crossover ports automatically sense whether they need to function as crossover
or straight ports, so crossover cables can connect both computers and switches/hubs.

Содержание

Похожие устройства

Скачать