There are so many network devices, that everyone will encounter
while your still connected to a network. For example you will find devices
like switches, routers, access points, and patch panels more often used to
distribute access throughout a vicinity or building. During your journey in the
search for network components, you might also encounter older versions of
network infrastructure like the hubs, bridges and repeaters.
Some of these network components are called legacy devices
like the hub, bridges and the repeaters. So then let’s look at these
components, which are the infrastructure, on which your network is built
and their functions one after another.
Hub: A hub is often
called a multiport repeater, is a network component used in connecting the node
in a physical star topology network into logical bus topology. A hub contains
multiple ports that you can easily connect devices to. Whenever a transmitting
data is sent to the hub port other ports get the information and transmitted it
to all other ports as well so that all other nodes receive the data. However,
only the specific destination node reads and processes the information in the
data whereas other node ignores it. Specifically the two common types of hubs
are passive and active. In definition a passive hubs simply means that is has
its ports wired together physically. It also connects devices plugged into it
without the use of power otherwise acting like a patch panel. While in the
other hand, an active hub is a true multiport repeater. It receives incoming
data and retransmits it out all ports with a signal boost. But today in the
network industry we use switches in the place of hubs.
Bridge: A bridge is an older version of a switch. It has the
same basic functionality of a switch, but it has fewer ports and is a software
based component, rather than this current normal today hardware based switch.
Repeaters: A repeater
sometimes referred to as a signal extender, is a device that regenerates a
signal to improve signal strength over transmission distances. By applying
repeaters network you’re exceeding the normal limitation on segment length
imposed by various networking technologies.
Switches: A switch is a network hardware component that joins
multiple computers on the same LAN together. Comparing to a hub switches only
forward data information only to the intended destination. This is because they
are built with slightly smarter technology than the hub. In the case of
availability switches are also more common. They can also be connected to other
switches by doing this creating an increase in the number of devices on a LAN
without idling one or more system in the network. In term of troubleshooting
switch are much easier also because all the ports on a switch have a physical
status light indicator.
POE: Power over Ethernet POE provides the power you need to power
both the internet equipment and the data to remote device over a twisted pair
cable in an Ethernet network. With the flexibility of POE you can place your equipment
such as switches, IP telephones, wireless access points and cameras any where convenient
and impossible t run out of electrical power source.
Routers: A router
is a networking device that connects multiple networks. Sending traffics from
one network to another does not always have to travel between the same routers.
Let assume on the internet now the traffic is routed through best available
rout or path at that time. Troubleshooting a router is made easy through the
indicating lights on the router.
Access point: An
access point is a networking device that facilitates the communication and
provides an enhanced security to wireless devices on a network. It also
functions as an extender of WAN to a physical range in some networks.
Repeaters and
Extenders: These equipments are used
frequently with coax media, such like cable Tv, and also deploy in network that
use coax cabling. With the structure of today’s networks repeaters are no
longer need but they are used in fiber networks. While in wireless network they
are used to extend the range of WAP.
Modem: this is a
device that is used to modulates and demodulates digital signal into an analog
form so that is can be sent over a telephone line hence the name MODEM. The equipment
is use to connect to the internet in other to send and receive information on
your network .it comes in form of a cable modem or a DSL modem, a wireless
modem, a voice modem or a radio modem.
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