Auto-Negotiating Ports; Ieee 802.3Az Eee; Gigabit Ethernet Ports - ZyXEL Communications GS1100 Series User Manual

You can use unshielded twisted pair (UTP) or shielded twisted-pair (STP) Ethernet cables for RJ-45 ports.
The following table describes the types of network cable used for the different connection speeds.
Table 4 Network Cable Types
SPEED
10 Mbps
100 Mbps
1000 Mbps
3.1.1 RJ- 45 Auto - ne g o tia ting Po rts
The 10 Base-T/100 Base-TX/1000 Base-T RJ-45 ports are auto-negotiating and auto-crossover.
An auto-negotiating port can detect and adjust to the optimum Ethernet speed (10/100/1000 Mpbs)
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.
3.1.2 IEEE 802.3a z EEE
Refer to Section 3.1.5 on page 21
The Switch supports the IEEE 802.3az EEE (Energy Efficient Ethernet) standard to help reduce power
consumption. This allows the Switch to go into power saving mode and switch off part of receive and
transmit circuitry when it is not transmitting or receiving data through an Ethernet connection.
An EEE-enabled device initiates Low Power Idle (LPI) signals to negotiate and wake up the remote
device when there is data to be transmitted. To use EEE, both devices should be EEE compliant.
EEE is configured on a per-system basis in the Switch. If one of the networking devices that connect to
the Switch does not support EEE, EEE may not work in the Switch to save power.
Press the
IEEE 802.3a z EEE O N/ O FF
network performance to be impacted due to the latency from the additional time required for the sleep
and wake transition or if the remote side does not support it.
3.1.3 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) 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-
Chapter 3 Hardware Panels
NET WO RK C ABL E T YPE
Category 3, 4 or 5 UTP/STP
Category 5 UTP/STP
Category 5e, 6 UTP/STP
for more information on hardware differences between models.
button to turn on the EEE feature. Disable it if you don't want the
GS1100 Series User's Guide
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