User manual

Introduction

NXA-ENET24 Hardware Installation Guide

Description of Hardware

Physical Description

The NXA-ENET24 and the NXA-ENET24 PoE Fast Ethernet switches measure 17.32 x 16.14 x 1.69

inches (44.0 x 41.0 x 4.3 cm).

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 “10/100BASE-TX Pin Assignments” on page 31.)

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

“1000BASE-T Pin Assignments” on page 33.)

The 1000BASE-T RJ-45 ports do not support PoE capability.

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 below and described in the following tables.

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. Use the Mode

Link/PoE button (See “Mode PoE/Link Button” on page 6.) on the front panel to toggle between the two

display modes. The current mode is indicated by the Link/Act and PoE system LEDs.

FIG. 2 Port LEDs

Port Status LEDs