ZyXEL Communications GS1350 Series, Руководство пользователя

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Chapter 3 Hardware Panels
GS1350 Series User’s Guide
33
3.1.1 Gigabit Ethernet Ports
The Switch has 1000Base-T auto-negotiating, auto-crossover Ethernet ports. In 10/100/1000 Mbps
Gigabit, 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 (10/100/1000 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.
Four 1000Base-T Ethernet ports are paired with an SFP slot to create a dual personality interface. The
Switch uses up to one connection for each SFP and 1000Base-T Ethernet pair. The SFP slots have priority
over the Gigabit ports. This means that if an SFP slot and the corresponding GbE port are connected at
the same time, the GbE port will be disabled.
Note: The dual personality ports change to fiber mode directly when inserting the fiber
module.
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.
3.1.1.1 Default Ethernet Negotiation Settings
The factory default negotiation settings for the Gigabit ports on the Switch are:
• Speed: Auto
2 GbE Combo Ports
(Dual Personality
Interfaces)
(only available for
GS1350-18HP/26HP)
Each interface has one 10/100/1000Base-T copper RJ-45 port and one SFP slot, with one port
active at a time.
• 10/100/1000Base-T Ports:
Connect these ports to a computer, an Ethernet switch or router.
• SFP Slots:
Use Small Form-Factor Pluggable (SFP) transceivers in these ports for fiber connections to
an Ethernet switch or router.
Reset Press the RESET button to reboot the Switch without turning the power off. See Section 3.3 on
page 39 for more information about the LED behavior.
Restore Press the RESTORE button for 3 to 7 seconds to have the Switch automatically reboot and
restore the last-saved custom default file. See Section 3.3 on page 39 for more information
about the LED behavior.
Press the RESTORE button for more than 7 seconds to have the Switch automatically reboot
and restore the factory default file. See Section 3.3 on page 39 for more information about
the LED behavior.
Console Port Only connect this port to your computer (using a USB Type A console cable) if you want to
configure the Switch using a computer with terminal emulation software via the console
port.
Table 3 Panel Connections (continued)
CONNECTOR DESCRIPTION