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Internet Service Provider-ISP

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J
Jaya Kamnani

An Internet service provider (ISP) offers customers access to the Internet for a monthly or yearly fee. ISPs are categorized as regional or national based on their geographic coverage area. Regional ISPs service a specific area with a smaller support team, while national ISPs have nationwide coverage and a larger support team. ISPs interconnect with upstream providers to exchange traffic and routes to provide full connectivity to destinations on the Internet for their customers.

Technology
1 of 20
ISP Internet Service Provider
What is ISP..??
An Internet service provider (ISP), also sometimes referred to as an Internet access provider (IAP), is a company that offers its customers access to the Internet.
• In other words, ISP is a service (an access) provider to a business/company that provides individuals and organizations access to the Internet free or for a monthly or yearly fee.
For complete Internet connectivity..?? • You must be able to reach all destinations on the net. • Your packets have to get delivered to every destination. • Packets from everywhere else have to “find you”. This is done by having your ISP(s) advertise routes for you.
TYPES OF ISP
• An Internet Service Providers are categorized as:- 1. Regional ISP’s 2. National ISPs. • Other than Internet connection, ISPs may also provide related services like Web site hosting & development, e-mail hosting, domain name registration etc.
Regional ISP A regional ISP usually provides Internet access to a specific geographic area and usually has a smaller technical support team
National ISP A national ISP is a business that provides Internet access in cities and towns nationwide and have a much larger technical support team.
ISP Interconnection
• Just as their customers pay them for Internet access, ISPs themselves pay upstream ISPs for Internet access. • An upstream ISP usually has a larger network than the contracting ISP and/or is able to provide the contracting ISP with access to parts of the Internet the contracting ISP by itself has no access to.
The Internet Hierarchy
Peering
ISPs may engage in peering, where multiple ISPs interconnect at peering points or Internet exchange points (IXs), allowing routing of data between each network, without charging one another for the data transmitted—data that would otherwise have passed through a third upstream ISP, incurring charges from the upstream ISP. Upstream
Technologies Employed
• For home users:- Dial-up DSL (ADSL) Broadband wireless access Cable modem ISDN • For medium-to-large businesses:- DSL (SDSL or ADSL) Ethernet Technologies ISDN Satellite Internet
Responsibility of an ISP
• Providing and maintaining a connection to the Internet • Support the hardware and software needed to service that connection • To protect their site and network from external threats such as viruses, hacker attacks and other illegal activities • Provide 24-hour customer service and technical support
THANK YOU

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Internet Service Provider-ISP

  • 3. An Internet service provider (ISP), also sometimes referred to as an Internet access provider (IAP), is a company that offers its customers access to the Internet.
  • 4. • In other words, ISP is a service (an access) provider to a business/company that provides individuals and organizations access to the Internet free or for a monthly or yearly fee.
  • 5. For complete Internet connectivity..?? • You must be able to reach all destinations on the net. • Your packets have to get delivered to every destination. • Packets from everywhere else have to “find you”. This is done by having your ISP(s) advertise routes for you.
  • 7. • An Internet Service Providers are categorized as:- 1. Regional ISP’s 2. National ISPs. • Other than Internet connection, ISPs may also provide related services like Web site hosting & development, e-mail hosting, domain name registration etc.
  • 8. Regional ISP A regional ISP usually provides Internet access to a specific geographic area and usually has a smaller technical support team
  • 9. National ISP A national ISP is a business that provides Internet access in cities and towns nationwide and have a much larger technical support team.
  • 11. • Just as their customers pay them for Internet access, ISPs themselves pay upstream ISPs for Internet access. • An upstream ISP usually has a larger network than the contracting ISP and/or is able to provide the contracting ISP with access to parts of the Internet the contracting ISP by itself has no access to.
  • 13.
  • 15. ISPs may engage in peering, where multiple ISPs interconnect at peering points or Internet exchange points (IXs), allowing routing of data between each network, without charging one another for the data transmitted—data that would otherwise have passed through a third upstream ISP, incurring charges from the upstream ISP. Upstream
  • 17. • For home users:- Dial-up DSL (ADSL) Broadband wireless access Cable modem ISDN • For medium-to-large businesses:- DSL (SDSL or ADSL) Ethernet Technologies ISDN Satellite Internet
  • 19. • Providing and maintaining a connection to the Internet • Support the hardware and software needed to service that connection • To protect their site and network from external threats such as viruses, hacker attacks and other illegal activities • Provide 24-hour customer service and technical support
  翻译：