Installing the Switch
18
NXA-ENET24 Hardware Installation Guide
Hardware Descriptions
10/100BASE-T Ports
The PoE switch base unit contains 24 10BASE-T/100BASE-TX RJ-45 ports. All ports support automatic
MDI/MDI-X operation, so you can use straight-through cables for all network connections to PCs or servers,
or to other switches or hubs (see the
10/100BASE-TX Pin Assignments
section on page 24).
Each of these ports support auto-negotiation, so the optimum transmission mode (half or full duplex), and data
rate (10 or 100 Mbps) can be selected automatically. If a device connected to one of these ports does not
support auto-negotiation, the communication mode of that port can be configured manually.
Each port also supports IEEE 802.3x auto-negotiation of flow control, so the switch can automatically prevent
port buffers from becoming saturated.
1000BASE-T/SFP Ports
These are combination Gigabit RJ-45 ports with alternate Small Form Factor Pluggable (SFP) transceiver
slots. If an SFP transceiver (purchased separately) is installed in a slot and has a valid link on the port, the
associated RJ-45 port is disabled.
The 1000BASE-T RJ-45 ports support automatic MDI/MDI-X operation, so you can use straight-through
cables for all network connections to PCs or servers, or to other switches or hubs (see the
1000BASE-T Pin
Assignments
section on page 26).
Port and System Status LEDs
The switch base unit also includes a display panel for key system and port indications that simplify installation
and network troubleshooting. The LEDs, which are located on the front panel for easy viewing, are shown in
FIG. 10
The port status LEDs have two display modes; Link and PoE.
The Link mode displays the link status and network activity on each port.
The PoE mode displays the PoE power status on each port.
The 1000BASE-T RJ-45 ports do not support PoE capability.
FIG. 10
Port LEDs
Port Status LEDs