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HUBS & SWITCHES: WHAT FOR ART THOU? By Wayne Sheppard ETEC 562

HUBS & SWITCHES: WHAT FOR ART THOU? By Wayne Sheppard ETEC 562. HUBS & SWITCHES DEFINED. These simple, affordable but effective small boxes provide a central connection point for the networking of multiple computers.

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HUBS & SWITCHES: WHAT FOR ART THOU? By Wayne Sheppard ETEC 562

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  1. HUBS & SWITCHES: WHAT FOR ART THOU?By Wayne SheppardETEC 562

  2. HUBS & SWITCHES DEFINED • These simple, affordable but effective small boxes provide a central connection point for the networking of multiple computers. • Hubs – small, simple, inexpensive devices that join multiple computers together at a low-level network protocol layer. • Switches-same as hubs, except they operate with additional intelligence above that offered by hubs.

  3. Some Characteristics of Hubs • Require bandwidth to be shared while switches offer a dedicated connections • Hubs can be managed or unmanaged • Hubs are sometimes referred to concentrators • A hub is a multi-port repeater

  4. Managed vs. Unmanaged • Managed hubs are usually not for home use. They have special networking computers built into them that do things that you will not need at home or small office. • They are also more expensive than switches. • Unmanaged hubs and switches are simple devices that let your Ethernet devices talk to each other.

  5. Three Types of Hubs • Passive-These hubs only restrain data • Active Hubs-They amplify the signal before it is retransmitted • Intelligent Hubs-These hubs are stackable and typically include remote management support via SNMP, and virtual LAN(VLAN) support

  6. 10/100 Ethernet Hub • A 10/100 mbps is a good choice for basic home networks. The 10Mbps and 100Mbps devices communicate at different speeds, and the hub allows them to talk. Prices have come down to under $50, the versatility and speed of these hubs cannot be beat for the price. • However, hubs are half duplex-each client can only send or receive date at a particular time.

  7. SWITCHES • Work on layer 2 of the OSI model. • Only forwards data to specific network segment. This results in multiple, smaller collision domains, and more efficient bandwidth usage.

  8. 10/100 Ethernet Switch • A 10/100 Ethernet switch can be considered a faster version of the 10/100 hub. • Switches allow your Ethernet cards to operate in full duplex instead of half duplex. • Full duplex means you can send and receive data at the same time. • Switches also route traffic directly between ports instead of directing traffic across all ports. • This means that each port on a switch gets dedicated bandwidth instead of shared bandwidth.

  9. PORT NUMBERS? • Where port numbers are concerned, consider an analogy between computer and the telephone. Port numbers and their associated network addresses work something like telephone numbers and associated extensions. • A port number identifies both a computer and also a “channel” within that computer where network communication will take place.

  10. SOUCES • WWW.COMPNETWORKING.COM • WWW.HOMENETHELP.COM

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