Installation Guide

Chapter 1: Product Description
24
Speed
The LAN port can operate at 10/100 Mbps or 1000 Mbps. The speed is set
automatically with Auto-Negotiation. You cannot disable Auto-Negotiation
on the port.
Note
The LAN port should be connected to a network device that also
adjusts its speed with Auto-Negotiation. If the network device does
not support Auto-Negotiation, the LAN port operates at 10 Mbps,
which may reduce network performance.
Duplex Mode
The LAN port can operate in either half- or full-duplex mode at
10/100 Mbps, and full-duplex mode at 1000 Mbps. The port is IEEE
802.3u-compliant and uses Auto-Negotiation to set the duplex mode. (You
cannot disable Auto-Negotiation on the port.)
Note
The LAN port should be connected to a network device that also
sets its duplex mode with Auto-Negotiation. If the network device
does not support Auto-Negotiation, the LAN port operates at
half-duplex mode. This may result in a duplex mode mismatch if the
network device is operating at full duplex.
Automatic MDIX Detection
The 10/100/1000 Mbps twisted-pair port is IEEE 802.3ab-compliant and
features automatic MDIX detection when operating at 10/100 Mbps.
(Automatic MDIX detection does not apply to 1000 Mbps.) This feature
automatically configures the port to MDI or MDI-X depending on the wiring
configuration of the port on the Ethernet switch.
Do not disable automatic MDIX detection. For automatic MDIX detection
to work properly, it must also be present on the Ethernet switch. The LAN
port defaults to MDIX if it is connected to a network device that does not
support automatic MDIX detection.
Port Pinouts
One port without a shielded RJ45 connector is available for 10/100/1000
base copper communication and PD of PoE on the rear panel. That
connector is compliant with IEC603-7and IEEE 802.3af requirements. One
RJ45 connector is available for RS-232 communication on the rear panel.
Refer to Table 13 on page 50 for the port pinout.