Ethernet Ports; Sfp/Sfp+ Slots - ZyXEL Communications XS3800-28 User Manual

Table 3 Panel Connections (continued)
C O NNEC T O R
RESET
RESTORE
3.1.1 Ethe rne t Po rts
The Switch has 10GBase-T auto-negotiating, auto-crossover Ethernet ports. In Multi-Gigabit Ethernet, the
speed can be 100 Mbps, 1 Gbps, 2.5 Gbps, 5 Gbps, or 10 Gbps. The duplex mode can be full duplex at
100 Mbps and full duplex only at 1000 Mbps.
An auto-negotiating port can detect and adjust to the optimum Ethernet speed (10/100/1000 Mbps)
and full duplex mode of the connected device.
An auto-negotiating port can detect and adjust to the optimum Ethernet speed (100 Mbps, 1 Gbps, 2.5
Gbps, 5 Gbps, and 10 Gbps) and full duplex mode of the connected device.
An auto-crossover (auto-MDI/MDI-X) port automatically works with a straight-through or crossover
Ethernet cable.
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 De fa ult Ethe rne t Ne g o tia tio n Se tting s
The factory default negotiation settings for the Ethernet ports on the Switch are:
• Speed: Auto
• Duplex: Auto
• Flow control: Off
• Dual Personality Interface: Fiber module first
3.1.2 SFP/ SFP+ Slo ts
The transceiver slots are for Small Form-Factor Pluggable (SFP), SFP+ transceivers or DAC (Direct Attach
Cables) cable. The SFP+ (SFP Plus) and the DAC cable are enhanced versions of the SFP and support
data rates of up to 10 Gbps. A transceiver is a single unit that houses a transmitter and a receiver. Use a
transceiver or a DAC cable to connect a fiber cable to the Switch. The Switch does not come with
transceivers nor DAC cables. You must use transceivers or DAC cables that comply with the Small Form-
factor Pluggable (SFP) Transceiver MultiSource Agreement (MSA). See the SFF committee's INF-8074i
specification Rev 1.0 for details.
You can change transceivers or the DAC cables while the Switch is operating. You can use different
transceivers to connect to Ethernet switches with different types of fiber connectors.
Chapter 3 Hardware Panels
DESC RIPT IO N
Press the button to reboot the Switch without turning the power off.
RESET
Press the button for 3 to 6 seconds to have the Switch automatically reboot and
REST O RE
restore the last-saved custom default file.
Press the button for more than 7 seconds to have the Switch automatically reboot
REST O RE
and restore the factory default file.
XS3800-28 User's Guide
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