NETGEAR EN524, EN516 manual Troubleshooting Information, Symptom Cause Solution

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Troubleshooting Information

Refer to this table and the information that follows the table to troubleshoot your Model EN516 or Model EN524 hub.

Symptom

Cause

Solution

 

 

 

Amber Collision

Data collision is

No action is required.

LED blinks.

normal on Ethernet

 

 

networks.

 

 

 

 

Amber Collision

There is data

Make sure connected devices are operating in half-

LED blinks

collision on the

duplex mode. The hub is not compatible with devices

excessively.

network because the

that operate in full-duplex mode.

 

network is extremely

If you suspect that there might be a defective device on

 

busy or defective

the network, disconnect devices one at a time to isolate

 

devices are

the defective unit on the network.

 

connected on the

If the network is extremely busy, you may have to

 

network that cannot

segment the network with an Ethernet switch such as a

 

detect network traffic

NETGEAR Ethernet switch or to upgrade your network

 

or collision.

to Fast Ethernet operation.

 

 

 

 

Wrong or miswired

Make sure the correct UTP cables are used. See the

 

cables are used.

table in the installation section of this guide for cable

 

 

use and Normal/Uplink push button information. Note

 

 

that home telephone cables can cause a collision

 

 

condition and cannot be used in place of UTP cables.

 

 

 

Green Link/Rx

The port is not

Check for a bad cable, cable pairs that are not correctly

LED on the

detecting a

wired, or loose connectors. Make sure that there is

10BASE-T port is

successful link or

power to both the hub and the Ethernet transceiver on

off when a cable

data transmission.

the connected device. Make sure the port has not been

is attached or not

 

partitioned.

blinking when

 

 

there is data

 

 

transmission.

 

 

 

 

 

Amber Partition

The connected port

The 10BASE-T port, BNC port, or AUI port is

LED on the

is partitioned

partitioned after 32 consecutive collisions are detected.

10BASE-T port,

because of excessive

When the first good packet without a collision is

BNC port, or AUI

collisions.

received, the port is reconnected and the amber

port turns on.

 

Partition LED turns off. Check and correct causes listed

 

 

in this table for excessive collisions. Make sure that:

 

 

• The correct cable is used and the cable is not faulty.

 

 

• There are no faulty connectors.

 

 

• The network card in your PC is set to half-duplex.

 

 

If the amber Partition LED on the BNC port turns on,

 

 

also make sure that:

 

 

• Each segment is terminated with a BNC 50 Ω

 

 

terminator at both ends. Note that if the BNC port is

 

 

not in use and the amber Partition LED turns on

 

 

(which could happen), no action is required.

 

 

If the amber Partition LED on the AUI port turns on,

 

 

also make sure that:

 

 

• The coaxial transceiver is functioning properly, the

 

 

coaxial segment is terminated properly, and the

 

 

segment is not disconnected along the cable

 

 

length.

 

 

• The signal quality error (SQE) test on the

 

 

transceiver is disabled. Refer to your transceiver

 

 

documentation for instructions.

 

 

 

Model EN516/EN524 Ethernet Hub Installation Guide

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Page 11 Page 13
Contents Page Features Start HerePackage Contents Product Illustration Front Panel of the Model EN516 hubFront Panel of the Model EN524 hub Vista 10BASE-T Network Ports with Built-in LEDsLEDs Normal/Uplink Push ButtonRear Panel Installation Procedures Prepare the Site Characteristic RequirementInstall the Hub Connect a PC to the HubConnect to a Network Using the 10BASE-T Ports Connect the Hub to a NetworkSet the Normal/Uplink Push Button Model EN524 hub Normal Model EN516 hub Uplink Connect to a Network Using the BNC Port Verify the Installation Connect to a Network Using the AUI PortTroubleshooting Information Symptom Cause SolutionCable Connector Information Network Interface CardsHub Integrity Twisted Pair CablesRJ-45 Connector AUI ConnectorBNC connector BNC ConnectorTechnical Specifications InterfaceTrademarks EN500NA-0

EN516, EN524 specifications

NETGEAR has long been recognized as a leader in networking solutions, catering to both home and business environments. Among its extensive range of products, the NETGEAR EN524 and EN516 stand out as powerful Ethernet switches designed to meet the needs of various networks.

The NETGEAR EN524 is an advanced 24-port 10/100 Mbps Ethernet switch. It's built for heavy-duty networking tasks and serves as an essential component in larger organizational infrastructures. The EN524 features auto-negotiation on each port, which optimizes network performance by automatically adjusting the connection speed based on the capabilities of connected devices. This feature ensures seamless integration into existing networks, without the need for manual configuration, thus simplifying deployments for network administrators.

On the other hand, the NETGEAR EN516 is a more compact 16-port 10/100 Mbps Ethernet switch, providing similar robust performance in a slightly smaller form factor. This is ideal for small to medium-sized businesses or workgroups that require a reliable way to expand their network without investing in excessive infrastructure. Like the EN524, the EN516 also supports auto-negotiation for efficient data transfers.

One of the notable characteristics of both switches is their fanless design. This not only contributes to quieter operation but also enhances reliability by reducing the risk of mechanical failure. Additionally, the switches boast a durable metal casing that helps to protect internal components and ensures longevity in demanding environments.

Both EN524 and EN516 incorporate network monitoring features including LED indicators, making it easy for administrators to diagnose issues or monitor network activity at a glance. They are also equipped with Ethernet ports that support auto MDI/MDIX, eliminating the need for crossover cables, thereby simplifying cable management and installation.

In terms of security, NETGEAR switches are designed to handle VLAN support, allowing businesses to create separate networks for different departments or functions without the need for additional hardware. This enhances security by isolating sensitive data and ensuring that only authorized personnel have access.

Ultimately, NETGEAR's EN524 and EN516 Ethernet switches are versatile tools that combine reliability, performance, and efficiency. They cater to the networking needs of businesses and workgroups, providing essential features that support both current demands and future expansions. With their ease of use and robust design, both models are sure to meet the expectations of even the most discerning network administrators.
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