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    Dial Up Networking

    Uploaded by

    Upinder Sethi
    This seminar discusses dial-up networking and how it connects users to the TCP/IP network through telephone lines using modems. It covers an overview of dial-up networking, the role of TCP/IP and protocols like SLIP and PPP in transporting data over the connection. Common ways of establishing connections include Ethernet, DSL/cable modems, and wireless. The seminar also discusses software tools that can help maintain dial-up connections and monitor connection speeds. While broadband is more common now, the document notes dial-up networking still has significance in remote areas without broadband access.

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    Attribution Non-Commercial (BY-NC)
    Download as PPT, PDF, TXT or read online from Scribd

    Dial Up Networking

    Uploaded by

    Upinder Sethi
    93 views18 pages
    This seminar discusses dial-up networking and how it connects users to the TCP/IP network through telephone lines using modems. It covers an overview of dial-up networking, the role of TCP/IP and protocols like SLIP and PPP in transporting data over the connection. Common ways of establishing connections include Ethernet, DSL/cable modems, and wireless. The seminar also discusses software tools that can help maintain dial-up connections and monitor connection speeds. While broadband is more common now, the document notes dial-up networking still has significance in remote areas without broadband access.

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    This seminar discusses dial-up networking and how it connects users to the TCP/IP network through telephone lines using modems. It covers an overview of dial-up networking, the role of TCP/IP and protocols like SLIP and PPP in transporting data over the connection. Common ways of establishing connections include Ethernet, DSL/cable modems, and wireless. The seminar also discusses software tools that can help maintain dial-up connections and monitor connection speeds. While broadband is more common now, the document notes dial-up networking still has significance in remote areas without broadband access.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as PPT, PDF, TXT or read online from Scribd
    Download as ppt, pdf, or txt
    93 views18 pages

    Dial Up Networking

    Uploaded by

    Upinder Sethi
    This seminar discusses dial-up networking and how it connects users to the TCP/IP network through telephone lines using modems. It covers an overview of dial-up networking, the role of TCP/IP and protocols like SLIP and PPP in transporting data over the connection. Common ways of establishing connections include Ethernet, DSL/cable modems, and wireless. The seminar also discusses software tools that can help maintain dial-up connections and monitor connection speeds. While broadband is more common now, the document notes dial-up networking still has significance in remote areas without broadband access.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as PPT, PDF, TXT or read online from Scribd
    Download as ppt, pdf, or txt
    of 18

    Seminar On Dial-up Networking

    Presented By: Sudhakar Panda Roll No. 2M46 5th Semester,MCA

    Contents:

    Introduction Overview of dial-up networking. TCP/IP Connecting To a Network Protocols Used in Dial-up Network Role Of Modem in Dial-up Network Different Software/Tools Used End Note

    Overview of Dial-up Network

    Introduction

    Dial-up networking is the most common methods for connecting to the TCP/IP network through a phone line. It is accomplished by a Modem. And is widely accepted because Dial-up access offers inexpensive internet access and provides a link to a user.

    Role Of TCP/IP in Dial-up

    Role of TCP is in transport layer whereas role of IP is in the internet layer. The CSNET member sites who are the infrequent internet user couldnt justify the cost of leased line connections then the dialup IP system comes into play. From the TCP/IP view ,dialing a telephone call is equivalent to running a wire ,i.e. the call has been answered by a modem on the other hand ,there is a connection from one node directly to another & the connection stays as long as needed. Hence TCP is a connection oriented protocol.

    Connecting Networks

    Can be done at any level in protocol stack


    Physical layer: Ethernet repeater Data link layer: bridge Network layer: router Application layer: mail gateway, proxy web server

    Common ways of connecting


    Ethernet connection DSL or cable modem Modem, using PPP Wireless

    Ethernet Connection

    Originally a shared-access, coax-based bus network technology Different types of Ethernet networking are possible :

    10BASE-2 coaxial Ethernet network.(185mtr.) 10BASE-T hub based Ethernet network.(100mtr.)

    Originally, 10 megabit/sec, now 100 Mbps common and gigabit possible Also used for high-speed, point-to-point connections

    Digital Subscriber Line


    Extension to current phone system Point-to-point connection Superimposes a high-bandwidth signal on telephone wire Generally higher downstream bandwidth than upstream

    Cable Modem

    The term is short for Modulate/DEModulate. Its Purpose is to transform the digital protocol transmission from a node into an analog signal that can pass through the interface with the phone system & to transform incoming analog signals from the phone line into a digital signal. Uses one or more cable channels for data communications Separate channels for sending and receiving Bandwidth shared with other users

    Wireless

    Operates in shared frequency band Two modes:


    Ad hoc, connecting neighboring machines Infrastructure, connecting machine to an access point

    Originally 11 Mbps, now faster versions Insecure, although WEP encryption helps a little

    Protocols used in dial-up

    The most protocols used in dial-up network are :


    o

    SLIP (Serial Line Internet Protocol)


    It was developed only for integrating modem protocols with TCP/IP. It was implemented in Unix system but now considered as obsolete. Its main purpose is to transmit IP datagram across a modem line .it provides no physical addressing & simply sends the data & then signal marking at the end of the data. The transmission over a phone line is slow. DATA ENDFLAG

    Data format:

    Point-to-point protocol
    o

    PPP (Point-to-Point Protocol)

    It is an effort to address some of the shortcomings of SLIP. Due to the fastness of modems and phone lines. It is really a collection of protocols that interact to supply a modem based network. PPP connection is established using the LCP negotiation process as described later. It transmits datagram received from upper layer protocol. Data format: Protocol enclosed data padding

    Link control protocol

    LCP (Link Control Protocol)

    It identifies 3 types of LCP packets link configuration packet,link termination packet & link maintenance packet. Packet format: code identifier length data

    Software tools

    rascal---enhance your dial-up session and keep your Internet connection alive by simulating network activity. Connection keeper---prevents your Internet connection from appearing idle or inactive while using very little bandwidth and system resources. If a connection is lost, Connection Keeper can automatically dial back in.

    AnalogX Net Stat Live ---find out how fast your Internet connection is in real-time.

    End note

    Hence in recent times most people rely on broadband technologies but dial-up networking is reliable on remote areas. Dial-up networking has its own Significance..

    Thanx

    Any Questions?

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