SAUMYA CHAURASIA

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ALTTC ASSIGNMENT

ALTTC LAN SERVER ROOM

[BLOCK DIAGRAM]

100 MBPS CONNECTIVITY THROUGH OPTICAL FIBRE CABLE VIA BROADBAND LAB

ROUTER : CISCO 7600

INTERNET SERVER

DOMAIN CONTROLLER AND DHCP SERVER

APPL SERVER

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To PC’s at computer lab

To Lan Switch on GSM lab

To Lan switch at EPABX for connectivity at ground floor

Net Connectivity at all the rooms of first floor

6 fiber OF cable to admin building

6 fiber OF cables to hostel

CONNECTIVITY

• We have supplied 100 Mbps Connectivity from provider edge router through optical fiber cable via broadband lab.
• The connectivity is supplied to Router : Cisco 7600 through an optical fiber.
• The cisco router:7600 is a customer Edge Router.
• Here the cisco router receives the connectivity through optical fiber and deliver it in electrical signal through LAN cable(CAT 6 CABLE)
• For sending the Connectivity to the users we have to keep in mind the AAA security concept , which means authentication, authorization and accounting .
• We apply this AAA security concept at Internet server , domain controller and DHCP server and Appl server for Security and Privacy.
• The Proxy server (AAA server) asks for username and Password from user to confirm the identification , therefore the authentication process is done .
• After Authentication, proxy server authorizes user regarding time limitation , data limitation, privacy, safety and data speed, etc.

OPTICAL FIBER

• An optical fiber is flexible and transparent fiber . Generally, we use silica for its construction .
• Its function is to guide visible and infrared light over long-distances .
• Its major usage is in telecommunication services like internet, television and telephones.
• Internal reflection concept is used in optical fiber to guide the light wave along its length .
• It is very thin like human hair ,approximately 0.003 inches in diameter.�

LOCAL AREA NETWORK

• A local area network is a computer network that interconnects computers within a limited area
• A local area network (LAN) consists of a series of computers linked together to form a network in a circumscribed location.
• The computers in a LAN connect to each other via TCP/IP ethernet or Wi-Fi. A LAN is normally exclusive to an organization, such as a school, office, association 

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WIDE AREA NETWORK

• A wide area network is a telecommunications network that extends over a large geographic area.
• They facilitate the sharing of regional resources.
• Therefore, they have low data transfer rate and high propagation delay, i.e., they have low communication speed.
• They generally have a higher bit error rate.
• Examples:
• Group of LAN
• 4G Mobile Broadband Systems
• A network of bank cash dispensers.

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LAN CABLE

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• LAN cable is a communication cable for connecting a personal computer and peripheral network devices.
• There are many types of Lan cable like CAT3,CAT4,CAT5, CAT6 etc.
• Lan cable some disadvantages:
• CAT 6 Lan cables only provide a 100 mbps speed.
• Its maximum length is 90 mt. Therefore, for length more than 90 mt we use a media coveter which converts the electrical signal to optical signal .

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MEDIA CONVERTER

• A  media converter is a simple networking device that makes it possible to connect two dissimilar media types such as twisted pair with fiber optic cabling .
•  It is a cost-effective and flexible device.
• Media converters help get tasks done in the quickest way possible.
• They receive data signals from one media (such as electronic signal on a twisted pair copper cable) and convert them to another (such as light pulses on a fiber optic cable) while remaining invisible to other networking devices.

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Conclusion

ACKNOWLEDGEMENT

• I would like to express my special thanks of gratitude to my teacher, mentor and motivator MR.K.K Sir who gave me the golden opportunity to do this wonderful assignment which also helped me in doing a lot of Research and I came to know about so many new things.
• I am thankful to K.K Sir.