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Installation Guide

NXA-ENET8-2POE 

Gigabit Ethernet Layer 2 PoE Switch

Overview

The NXA-ENET8-2POE (

FG2178-63

) is a Gigabit Ethernet Layer 2 PoE switch with 8 10/

100/1000BASE-T ports, and 2 Small Form Factor Pluggable (SFP) transceiver slots, (see 
Figure 1, Ports 9-10).
The NXA-ENET8-2POE also includes an SNMP-based management agent, which provides 
in-band access for managing the switch.
The NXA-ENET8-2POE provides a broad range of powerful features for Layer 2 switching, 
delivering reliability and consistent performance for your network traffic. They bring order to 
poorly performing networks by segregating them into separate broadcast domains with IEEE 
802.1Q compliant VLANs, and empower multimedia applications with multicast switching 
and CoS services.      

Hardware Specifications 

Installation

Selecting a Site

The site should:

Be at the center of all the devices you want to link and near a power outlet.

Be able to maintain its temperature within 0° to 50°C (32° to 122°F) and its humidity 

within 10% to 90%, non-condensing

Provide adequate space (approximately two inches) on all sides for proper air flow

Be accessible for installing, cabling and maintaining the devices

Allow the status LEDs to be clearly visible

Make sure twisted-pair cable is always routed away from power lines, fluorescent lighting 
fixtures and other sources of electrical interference, such as radios and transmitters.
Make sure that the unit is connected to a separate grounded power outlet that provides 100 
to 240 VAC, 50 to 60 Hz, is within 2 m (6.6 feet) of each device and is powered from an 
independent circuit breaker. As with any equipment, using a filter or surge suppressor is 
recommended.

Ethernet Cabling

To ensure proper operation when installing the NXA-ENET8-2POE into a network, make sure 
that the current cables are suitable for 10BASE-T, 100BASE-TX, or 1000BASE-T operation. 
Check the following criteria against the current installation of your network:

Cable type: Un-shielded twisted pair (UTP) or shielded twisted pair (STP) cables with 

RJ-45 connectors; Category 3 or better for 10BASE-T, Category 5 or better for 
100BASE-TX, and Category 5, 5e, or 6 for 1000BASE-T.

Protection from radio frequency interference emissions

Electrical surge suppression

Separation of electrical wires (switch related or other) and electromagnetic fields from 

data based network wiring

Safe connections with no damaged cables, connectors or shields

Mounting

The NXA-ENET8-2POE can be mounted in a standard 19-inch equipment rack or on a 
desktop or shelf. Mounting instructions for each type of site follow (see reverse).

Rack Mounting 

Before rack mounting the NXA-ENET8-2POE, pay particular attention to the following 
factors:

Temperature

: Check that the rack environment temperature (within a rack assembly) 

is within the specified operating temperature range (see the 

Specifications

table).

Mechanical

 

Loading

: Do not place any equipment on top of the rack-mounted unit.

Circuit

 

Overloading

: Be sure that the supply circuit to the rack assembly is not over-

loaded.

FIG. 1  

NXA-ENET8-2POE (front and rear panels)

NXA-ENET8-2POE Hardware Specifications

Features

• IGMP snooping v1/v2/v3
• IPv6 support
• 802.1Q VLAN support
• 802.1X Port and MAC-based authentication
• IEEE 802.1p CoS support
• In-band Management: Web, or SNMP manager

Performance

• Switching Capability: 20 Gbps (aggregate bandwidth)
• Packet Buffer Size: 1 MB
• Switching Database: 8K MAC Address Table
• Flash:  8  MB
• Forwarding Mode: Store-and-forward
• Throughput: Wire speed
• Flow Control: Full Duplex: IEEE 802.3x, Half Duplex: Back 

pressure

Standards

• IEEE 802.3-2005
• Ethernet, Fast Ethernet, Gigabit Ethernet
• Full-duplex flow control
• Link Aggregation Control Protocol
• IEEE802.3at Power-over-Ethernet
• ISO/IEC 8802-3

Physical Ports:

• 8 10/100/1000BASE-T RJ-45 PoE ports
• 2 Gigabit Ethernet SFP slots (dual speed 100/1000BASE-X)

LEDs

• System: PWR, DIAG, PoE
• Port: Status (Link, Speed, Activity)

Network Interface

Ports 1-8:

RJ-45 connector, auto MDI/MDI-X:
• 10BASE-T: RJ-45 (100-ohm, UTP cable; Cat 3 or better)
• 100BASE-TX: RJ-45 (100-ohm, UTP cable; Cat 5 or better)
• 1000BASE-T: RJ-45 (100-ohm, UTP cable; Cat 5, 5e or better)
Maximum cable length - 100 m (328 ft)

Ports 9-10:

SFP transceiver slots:
100BASE-FX, 1000BASE-SX,1000BASE-LX, 1000BASE-LH, 
1000BASE-T
The maximum length for fiber optic cable operating at Gigabit 
speed will depend on the fiber type. 
See the 

1000 MBPS Gigabit Ethernet Collision Domain

section in 

the 

NXA-ENET8-2POE Operation/Reference Guide

 for details.

PoE (IEEE 802.3at Power over Ethernet)

Max output power:

Up to 30 W per port, within the total PoE power budget

Total PoE budget:

75 W

Voltage:

Maximum current: 1.7A

PoE Output Voltage:

48 V DC

Reset Button 

10/100/1000 Mbps

1000BASE-T/SFP Ports (9-10)

Grounding Point

Power Inlet

SPF Port Status LEDs (ports 9-10 Link/Activity/Speed)

Power Status LED

Diagnostics Status LED 

PoE Status LEDs (ports 1 - 8)

Ethernet Port Status LEDs (ports 1-8)

(Link/Activity/Speed)

RJ45 PoE Ports (1-8)

NXA-ENET8-2POE Hardware Specifications (Cont.)

Power Requirements:

Power Consumption

• 75 Watts for PoE power (Max from AC inlet)
• 20 Watts for system power

Voltage:

• 100-240V 
• 50-60Hz
• 1.5 A

Current:

• 1.5 A @ 110 VAC 
• 0.75 A @ 220 VAC 

Power Supply

• AC Power: 100 to 240 V, 50-60 Hz, 0.7A
• Power Supply: Internal, auto-ranging transformer: 

100 to 240 VAC, 50 to 60 Hz

• Power Consumption: 100 Watts
• Maximum Current: 1.7A @ 100 VAC

Physical

Size (W x D x H)

33 x 20.4 x 4.3 cm (12.99 x 8.03 x 1.69 in.)

Weight

2.2 kg (4.85 lbs)

Environmental

Temperature:

• Standard Operating: 0°C to 50°C (32°F to 122°F)
• Non-Operating (Storage): -40°C to 70°C (-40°F to 158°F)

Humidity

10% to 90% (non-condensing)

Compliances

• W FCC Part 15 Class A 
• IC CISPR 22 Class A 
• CE EN 55022 Class A and EN 55024 
• LVD EN 60950-1 
• CB Scheme IEC 60950-1 
• CSA 22.2 NO 60950-1

Included Accessories

• Four adhesive foot pads
• Grounding screw
• Two brackets and eight screws
• Power Cord

Other AMX Equipment: • NXA-WAP1000 - 802.11a/b/g/n Wireless Access Point 

(FG2255-51/53)

• NXA-WAPZD1100 - Wireless LAN ZoneDirector (FG2255-75, 

FG2255-54K – 60K)

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