Chapter 3 Hardware Panels
GS2220 Series User’s Guide
40
The following table describes the ports.
3.1.1 G ig a bit 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.
Table 3 Panel Connections
CO NNEC TO R DESC RIPTIO N
8/24/48 1000Base-T
RJ-45 Ethernet Ports
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.
2 SFP Slots
(only available for
GS2220-50/50HP)
Use SFP transceivers in these ports for high-bandwidth backbone connections.
2/4 GbE Combo
Ports (Dual
Personality
Interfaces)
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 47
for more information about the LED behavior.
Restore Press the RESTO RE 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 47 for more information
about the LED behavior.
Press the RESTO RE button for more than 7 seconds to have the Switch automatically reboot
and restore the factory default file. See
Section 3.3 on page 47 for more information about
the LED behavior.
PoE Mode
(only available for
GS2220-50HP)
Push or release this button to change how the Link/ AC T LED works.
• Each Ethernet port’s LED is changed to act as a Po E Mode LED by pushing the Po E MO DE
button on the front panel.
• Each Ethernet port’s LED is changed back to act as a Link/ AC T LED by releasing the PoE
MO DE b utto n on the front panel.
View the LEDs to ensure proper functioning of the Switch and as an aid in troubleshooting
(see
Section 3.3 on page 47).
Console Port 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.
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