Chapter 3 Hardware Panels; Gigabit Ethernet Ports - ZyXEL Communications GS2220 Series User Manual

The following table describes the ports.
Table 3 Panel Connections
C O NNEC T O R
8/24/48 1000Base-T
RJ-45 Ethernet Ports
2 SFP Slots
(only available for
GS2220-50/50HP)
2/4 GbE Combo
Ports (Dual
Personality
Interfaces)
Reset
Restore
PoE Mode
(only available for
GS2220-50HP)
Console Port
3.1.1 G ig a b it Ethe rne t Po rts
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.

Chapter 3 Hardware Panels

DESC RIPT IO N
These are 10/100/1000Base-T auto-negotiating and auto-crossover Ethernet ports.
Connect these ports to a computer, a hub, a router, or an Ethernet switch.
Use SFP transceivers in these ports for high-bandwidth backbone connections.
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.
Press the button to reboot the Switch without turning the power off. See
RESET
page 47 for more information about the LED behavior.
Press the button for 3 to 7 seconds to have the Switch automatically reboot and
REST O RE
restore the last-saved custom default file. See
about the LED behavior.
Press the button for more than 7 seconds to have the Switch automatically reboot
REST O RE
and restore the factory default file. See
the LED behavior.
Push or release this button to change how the
• Each Ethernet port's LED is changed to act as a
button on the front panel.
• Each Ethernet port's LED is changed back to act as a
on the front panel.
MO DE b utto n
View the LEDs to ensure proper functioning of the Switch and as an aid in troubleshooting
(see Section 3.3 on page 47).
Only connect this port to your computer (using an RS-232 cable) if you want to configure the
Switch using the command line interface (CLI) through the console port.
GS2220 Series User's Guide
40
Section 3.3 on page 47
Section 3.3 on page 47 for more information about
LED works.
L ink/ AC T
LED by pushing the
Po E Mo de
L ink/ AC T
Section 3.3 on
for more information
Po E MO DE
LED by releasing the PoE