Transcript Cisco Router - SlidePapers

Cisco Router
Technology
Overview Topics :
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Overview of cisco
Introduction of Router
How Router Works
Example of Routing Technology
Communicating With Routers
Thank you
Overview of cisco:
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Cisco is a one company.
It was founded in 1984, in california by a
small group of computer scientists from
stanford University.
Cisco engineers have been leaders in the
development of internet protocol based
networking technology & the company
core development areas of routing &
switching as well as advanced
technologies such as:
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IP communication
Network security
Wire-less LAN
Storage area networking
Home networking
Video systems
Applications networking services
Introduction of Router:
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1.
What is Router ?
Router means a device that forwards
data packets between computer
networks.
We use routers in internet but we are
not aware of it.
They act as security gets by checking
traffic against access permission lists.
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Routers can simultaneously support
different protocols, effectively making
virtually all computers compatible at the
internetwork level.
Routers filter out unwanted traffic by
isolating areas in which messages can be
“broadcast” to all users in a network.
They automatically learn about new
paths and select the best ones,
eliminating artificial constraints on
expanding and improving internetwork.
How Routers Works :
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As the name specify “The Router” exactly
it works like that to find the next route.
They route data from a LAN to an other
Router, then another Router, and so on
until data is received at its destination.
Routers also act as traffic cops, allowing
only authorized machines to transmit data
into the local network so that private
information can remain secure.
Example of Company:Animators
HR department
Internet
CEO
Secretary
Router
Hub
Hub
Janitor
Example of Routing Technology:
We take an example that how our
telephone call is routed across the
country.
If we contact one person who is
at the long distance from us. Now we
want to call them then a telephone
system establishes one stable circuit
between your telephone and your
relative’s telephone. The circuit may
involve many number of steps including
fiber-optics, copper wires, & satallites.
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This end to end chain ensures that the
quality of the line between you and your
relative will be constant.
Whatever information is sent across the
internet is first broken into 1500 bytes
packets.
The Packets are transmitted across the
number of routers, each one sending the
packet to the destination device.
The Packets will be transmitted via the
best available route this type of network is
called packet switched network through
router.
Communicating with Routers
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Most users of internetworks don’t
communicate with routers, they
communicate through them. Network
administrators must deal directly with
individual routers in order to install and
manage them.
Routers are purpose built computers
dedicated to internetwork processing.
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They are important devices that
individually serve hundreds or thousands
of users.
Routers don’t come with a monitor,
keyboard, or mouse, so you must
communicate with them in one of three
other ways:
From a terminal that’s in the same
location as the router and is connected
to via a cable.
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From a terminal that’s in a different
location as the router & is connected to
it via a modem that calls a modem
connected with router with a cable.
Via the network on which the router
sites.
Access to Routers
Routers
Console port
Local cable
Network
interface
Auxiliary
port
Modem
Dial-up
connection
Internetwork
Modem