Download Router - UStudy.in

Router
Introduction
• A router is a device in computer networking that forwards data
packets to their destinations, based on their addresses.
• The work a router does it called routing, which is somewhat like
switching, but a router is different from a switch.
• The latter is simply a device to connect machines to form a LAN.
Router
• Routers take information that arrives through your broadband
signal via a modem, decipher it, and deliver it to your computer.
• The router will also choose the best route for the data packet so
that you receive the information quickly.
Router
How a Router Works
• When data packets are transmitted over a network (say the
Internet), they move through many routers (because they pass
through many networks) in their journey from the source
machine to the destination machine.
• Routers work with IP packets, meaning that it works at the level
of the IP protocol.
Router working animation
Router Working
• Each router keeps information about its neighbours' (other
routers in the same or other networks).
• This information includes the IP address and the cost, which is
in terms of time, delay and other network considerations.
• This information is kept in a routing table, found in all routers.
Router Working
• When a packet of data arrives at a router, its header information
is scrutinized by the router.
• Based on the destination and source IP addresses of the packet,
the router decides which neighbour it will forward it to.
• It chooses the route with the least cost, and forwards the packet
to the first router on that route.
Types of Routers
Broadband Routers
• Broadband routers can be used to do several different types of
things.
• They can be used to connect two different computers or to
connect two computers to the Internet.
• They can also be used to create a phone connection.
Broadband Router
Broadband Router
• If you are using Voice over IP (VoIP) technology, then you will need a
broadband router to connect your Internet to your phone.
• These are often a special type of modem that will have both Ethernet
and phone jacks.
• Although this may seem a little confusing, simply follow the
instructions that your VoIP provider sends with your broadband router
- usually you must purchase the router from the company in order to
obtain the service.
Wireless Router
• Wireless routers connect to your modem and create a wireless
signal in your home or office.
• So, any computer within range can connect to your wireless
router and use your broadband Internet for free.
• The only way to keep anyone from connecting to your system is
to secure your router.
Wireless Router
Wireless Router
• A word of warning about wireless routers: Be sure your secure
them, or you will be susceptible to hackers and identity thieves.
• In order to secure your router, you simply need to come to
WhatIsMyIPAddress.com, and get your IP address.
• Then, you'll type that into your web browser and log into your
router (the user ID and password will come with your router).
The End
…… Thank You ……