LevelOne FSW-2420TX, FSW-1620TX Helpful Suggestions, Prior to Installation, Half- and Full-Duplex

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100Mbps
no Auto-Negotiation
100Mbps
with Auto-Negotiation

4 HELPFUL SUGGESTIONS

4.1Prior to Installation

Before installing the Switch and connecting network devices, it is important to plan the network's layout. Things you should consider include:

￿Dedicated Bandwidth: File servers and other high-traffic hardware improve their performance if they have their own dedicated 10Mbps or 100Mbps bandwidth.

￿Full-Duplex:Determine which devices support Full-Duplex connections.

￿Fast Ethernet: Make sure rules for cable lengths and categories are followed.

￿Auto-Negotiation: Devices with different speeds may be easily swapped when the other end of the cable is fixed to a port with Auto-Negotiation.

4.2Half- and Full-Duplex

The Switch supports both Half- and Full-Duplex modes for 10BASE-T and 100BASE-TX.

￿In Half-Duplex mode: Data cannot be transmitted and received at the same time. Attached devices must finish transmitting data before they can receive data.

￿In Full-Duplex mode: Data can be transmitted and received at the same time. However:

￿Full-Duplex transmission is only possible between two devices with a dedicated link (ex: Switch-Switch, Switch-PC)

￿Both devices must have Full-Duplex capability

￿Both devices must be set to Full-Duplex (ex: Auto-NegotiationAuto-Negotiation, Non-Auto-Negotiation to Non-Auto-Negotiation)

The 100BASE-TX/10BASE-T ports on the Switch detect and set the line's operating mode by using their Auto-Negotiation function.

4.3Fast Ethernet

100BASE-TX is called "Fast Ethernet". In Fast Ethernet data travels ten times faster (100Mbps) than in traditional Ethernet (10Mbps).

Below is a list of the cable types and connectors supported by the Switch for 10BASE-T and 100BASE-TX networks.

Port Type

Cable Type

Connector

10BASE-T

Category 3, 4 or 5 TP

RJ-45

100BASE-TX

Cat. 5 TP

RJ-45

Note: If your 10BASE-T network currently uses Category 5 TP cabling, you can instantly upgrade the network to a 100BASE-TX network by changing network devices.

4.4Auto-Negotiation

Every 10/100Mbps dual speed port on the Switch has a Built-In "Auto-Negotiation" function. This technology automatically sets the best possible bandwidth as soon as a connection is established with another network device. (Usually at Power “On” or Reset.) This capability is achieved via the Switch’s Auto-Negotiation function that automatically detects the modes and speeds the second (attached) device is capable of.

Evaluating Auto-Negotiation Capability:

If attached device is: The Switch will automatically set its TP ports to operate at:

100Mbps (100BASE-TX, Half-Duplex)

200Mbps (100BASE-TX, Full-Duplex)

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Contents LevelOne Table of Contents Unpacking Information For FSW-2420TX Key Features For FSW-1620TXProduct Introduction ModelsRear Panel LINK/ACTTo locate the switch on a desktop InstallationRackmount placement Fast Ethernet Prior to InstallationHelpful Suggestions Half- and Full-DuplexBroadcast Storm Control only for FSW-1620TX MAC Address Table100BASE-TX Product Specifications Page FCC Warning