Ethernet Ports; Poe (Xs1930-12Hp); Sfp/Sfp+ Slots - ZyXEL Communications XS1930-12HP User Manual

3.1.1 Ethernet Ports

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. See
information about Multi-Gigabit Ethernet. The duplex mode can be full duplex only.
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 uses 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
• Duplex: Auto
• Flow control: Off
• Link Aggregation: Disabled
3.1.1.2 Auto-crossover
All ports support 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.

3.1.2 PoE (XS1930-12HP)

The Switch supports the IEEE 802.3af Power over Ethernet (PoE), IEEE 802.3at Power over Ethernet (PoE)
plus and IEEE 802.3bt standards. The Switch is a Power Sourcing Equipment (PSE) because it provides a
source of power via its Ethernet ports. Each device that receives power through an Ethernet port is a
Powered Device (PD).

3.1.3 SFP/SFP+ Slots

These slots are for Small Form-Factor Pluggable (SFP) or SFP+ transceivers or SFP+ DAC (Direct Attach
Copper) cables. The SFP+ (SFP Plus) is an enhanced version of the SFP and supports data rates of 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-optic 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.
Chapter 3 Hardware Panels
XS1930 Series User's Guide
32
Section 1.1.1 on page 18 for more